Continuous methods for treating liquids and manufacturing certain constituents (e.g., nanoparticles) in liquds, apparatuses and nanoparticles and nanoparticle/liquid solution(s) resulting therefrom
20210052638 ยท 2021-02-25
Assignee
Inventors
Cpc classification
B01J2219/0816
PERFORMING OPERATIONS; TRANSPORTING
B01J2219/0822
PERFORMING OPERATIONS; TRANSPORTING
B01J2219/0869
PERFORMING OPERATIONS; TRANSPORTING
B01J19/088
PERFORMING OPERATIONS; TRANSPORTING
A61K9/14
HUMAN NECESSITIES
B01J2219/0809
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
This invention relates generally to novel methods and novel devices for the continuous manufacture of nanoparticles, microparticles and nanoparticle/liquid solution(s). The nanoparticles (and/or micron-sized particles) comprise a variety of possible compositions, sizes and shapes. The particles (e.g., nanoparticles) are caused to be present (e.g., created and/or the liquid is predisposed to their presence (e.g., conditioned)) in a liquid (e.g., water) by, for example, preferably utilizing at least one adjustable plasma (e.g., created by at least one AC and/or DC power source), which plasma communicates with at least a portion of a surface of the liquid. At least one subsequent and/or substantially simultaneous adjustable electrochemical processing technique is also preferred. Multiple adjustable plasmas and/or adjustable electrochemical processing techniques are preferred. The continuous process causes at least one liquid to flow into, through and out of at least one trough member, such liquid being processed, conditioned and/or effected in said trough member(s). Results include constituents formed in the liquid including micron-sized particles and/or nanoparticles (e.g., metallic-based nanoparticles) of novel size, shape, composition, zeta potential and properties present in a liquid.
Claims
1. A method for treating a patient with a bacterial infection comprising administering to a patient in need thereof an effective amount of a composition comprising: water; silver constituents comprising silver ions and silver nanoparticles in said water, said silver constituents being present in an amount of 1 ppm to 20.6 ppm; zinc constituents comprising zinc ions in said water, said zinc constituents being present in an amount of 0.5 ppm to 20 ppm, wherein a ratio of the amount of said zinc constituents to said silver constituents varies from 8:1 to 0.5:1; and nitrogen oxides in said water.
2. A method for treating a patient with a bacterial infection comprising administering to a patient in need thereof an effective amount of a composition comprising: water; silver constituents in said water, said silver constituents comprising silver species selected from the group consisting of silver ions and silver nanoparticles, said silver constituents being present in an amount of 7.13 ppm to 20.6 ppm; and zinc constituents in said water, said zinc constituents comprising zinc ions, said zinc constituents being present in an amount of 12.7 ppm to 20 ppm, wherein a ratio of the amount of said zinc constituents to said silver constituents varies from 8:1 to 0.5:1.
3. The method of claim 2, wherein constituents comprising nitrogen oxides are also present in said water.
4. The method of claim 2, wherein the amount in parts per million of said silver constituents present relative to said zinc constituents present is within the range of 21.7% to 56.5% and the amount in parts per million of zinc constituents present is within the range of 43.57% to 70.3%.
5. The method of claim 2, wherein a pH of the liquid is within a range of 3.2 to 3.83.
6. The method of claim 2, wherein said silver constituents comprise both silver ions and silver nanoparticles.
7. A method for treating a patient with a microbial infection comprising administering to a patient in need thereof an effective amount of a composition comprising: water; silver constituents comprising silver ions and silver nanoparticles in said water, said silver constituents being present in an amount of 1 ppm to 20.6 ppm; zinc constituents comprising zinc ions in said water, said zinc constituents being present in an amount of 0.5 ppm to 20 ppm, wherein a ratio of the amount of said zinc constituents to said silver constituents varies from 8:1 to 0.5:1; and nitrogen oxides in said water.
8. The method of claim 1, wherein the composition is administered orally.
9. The method of claim 2, wherein the composition is administered orally.
10. The method of claim 7, wherein the composition is administered orally.
11. The method of claim 7, wherein the amount in parts per million of said silver constituents present relative to said zinc constituents present is within the range of 21.7% to 56.5% and the amount in parts per million of zinc constituents present is within the range of 43.57% to 70.3%.
12. The method of claim 7, wherein a pH of the liquid is within a range of 3.2 to 3.83.
13. The method of claim 7, wherein said silver constituents comprise both silver ions and silver nanoparticles.
Description
DETAILED DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0183] The embodiments disclosed herein relate generally to novel methods and novel devices for the continuous manufacture of a variety of constituents in a liquid including nanoparticles, and nanoparticle/liquid(s) solution(s). The nanoparticles produced in the various liquids can comprise a variety of possible compositions, sizes and shapes, zeta potential (i.e., surface change), conglomerates, composites and/or surface morphologies which exhibit a variety of novel and interesting physical, catalytic, biocatalytic and/or biophysical properties. The liquid(s) used and/or created/modified during the process play an important role in the manufacturing of and/or the functioning of the nanoparticles and/or nanoparticle/liquid(s) solutions(s). The atmosphere(s) used play an important role in the manufacturing and/or functioning of the nanoparticle and/or nanoparticle/liquid(s) solution(s). The nanoparticles are caused to be present (e.g., created) in at least one liquid (e.g., water) by, for example, preferably utilizing at least one adjustable plasma (e.g., formed in one or more atmosphere(s)), which adjustable plasma communicates with at least a portion of a surface of the liquid. The power source(s) used to create the plasma(s) play(s) an important role in the manufacturing of and/or functioning of the nanoparticles and/or nanoparticle/liquid(s) solution(s). For example, the voltage, amperage, polarity, etc., all can influence processing and/or final properties of produced products. Metal-based electrodes of various composition(s) and/or unique configurations are preferred for use in the formation of the adjustable plasma(s), but non-metallic-based electrodes can also be utilized. Utilization of at least one subsequent and/or substantially simultaneous adjustable electrochemical processing technique is also preferred. Metal-based electrodes of various composition(s) and/or unique configurations are preferred for use in the adjustable electrochemical processing technique(s).
Adjustable Plasma Electrodes and Adjustable Electrochemical Electrodes
[0184] An important aspect of one embodiment of the invention involves the creation of an adjustable plasma, which adjustable plasma is located between at least one electrode (or plurality of electrodes) positioned above at least a portion of the surface of a liquid and at least a portion of the surface of the liquid itself. The surface of the liquid is in electrical communication with at least one second electrode (or a plurality of second electrodes). This configuration has certain characteristics similar to a dielectric barrier discharge configuration, except that the surface of the liquid is an active participant in this configuration.
[0185]
[0186] The adjustable plasma region 4, created in the embodiment shown in
[0187] The composition of the electrode 1 can also play an important role in the formation of the adjustable plasma 4. For example, a variety of known materials are suitable for use as the electrode(s) 1 of the embodiments disclosed herein. These materials include metals such as platinum, gold, silver, zinc, copper, titanium, and/or alloys or mixtures thereof, etc. However, the electrode(s) 1 (and 5) can be made of any suitable material which may comprise metal(s) (e.g., including appropriate oxides, carbides, nitrides, carbon, silicon and mixtures or composites thereof, etc.). Still further, alloys of various metals are also desirable for use with the present invention. Specifically, alloys can provide chemical constituents of different amounts, intensities and/or reactivities in the adjustable plasma 4 resulting in, for example, different properties in and/or around the plasma 4 and/or different constituents being present transiently, semi-permanently or permanently within the liquid 3. For example, different spectra can be emitted from the plasma 4 due to different constituents being excited within the plasma 4, different fields can be emitted from the plasma 4, etc. Thus, the plasma 4 can be involved in the formation of a variety of different nanoparticles and/or nanoparticle/solutions and/or desirable constituents, or intermediate(s) present in the liquid 3 required to achieve desirable end products. Still further, it is not only the chemical composition and shape factor(s) of the electrode(s) 1, 5 that play a role in the formation of the adjustable plasma 4, but also the manor in which any electrode(s) 1, 5 have been manufactured can also influence the performance of the electrode(s) 1, 5. In this regard, the precise shaping technique(s) including forging, drawing and/or casting technique(s) utilized to from the electrode(s) 1, 5 can have an influence on the chemical and/or physical activity of the electrode(s) 1, 5, including thermodynamic and/or kinetic and/or mechanical issues.
[0188] The creation of an adjustable plasma 4 in, for example, air above the surface 2 of a liquid 3 (e.g., water) will, typically, produce at least some gaseous species such as ozone, as well as certain amounts of a variety of nitrogen-based compounds and other components. Various exemplary materials can be produced in the adjustable plasma 4 and include a variety of materials that are dependent on a number of factors including the atmosphere between the electrode 1 and the surface 2 of the liquid 3. To assist in understanding the variety of species that are possibly present in the plasma 4 and/or in the liquid 3 (when the liquid comprises water), reference is made to a 15 Jun. 2000 thesis by Wilhelmus Frederik Laurens Maria Hoeben, entitled Pulsed corona-induced degradation of organic materials in water, the subject matter of which is expressly herein incorporated by reference. The work in the aforementioned thesis is directed primarily to the creation of corona-induced degradation of undesirable materials present in water, wherein such corona is referred to as a pulsed DC corona. However, many of the chemical species referenced therein, can also be present in the adjustable plasma 4 of the embodiments disclosed herein, especially when the atmosphere assisting in the creation of the adjustable plasma 4 comprises humid air and the liquid 3 comprises water. In this regard, many radicals, ions and meta-stable elements can be present in the adjustable plasma 4 due to the dissociation and/or ionization of any gas phase molecules or atoms present between the electrode 1 and the surface 2. When humidity in air is present and such humid air is at least a major component of the atmosphere feeding the adjustable plasma 4, then oxidizing species such as hydroxyl radicals, ozone, atomic oxygen, singlet oxygen and hydropereoxyl radicals can be formed. Still further, amounts of nitrogen oxides like NO.sub.x and N.sub.2O can also be formed. Accordingly, Table 1 lists some of the reactants that could be expected to be present in the adjustable plasma 4 when the liquid 3 comprises water and the atmosphere feeding or assisting in providing raw materials to the adjustable plasma 4 comprises humid air.
TABLE-US-00001 TABLE 1 Reaction/Species Equation H.sub.2O + e.sub. .fwdarw. OH + H + e.sub. dissociation 2 H.sub.2O + e.sub. .fwdarw. H.sub.2O.sub.+ + 2e.sub. ionization 3 H.sub.2O.sub.+ + H.sub.2O .fwdarw. H.sub.3O.sub.+ + OH dissociation 4 N.sub.2 + e.sub. .fwdarw. N.sub.2* + e.sub. excitation 5 O.sub.2 + e.sub. .fwdarw. O.sub.2* + e.sub. excitation 6 N.sub.2 + e.sub. .fwdarw. 2N + e.sub. dissociation 7 O.sub.2 + e.sub. .fwdarw. 2O + e.sub. dissociation 8 N.sub.2 + e.sub. .fwdarw. N.sub.2+ + 2e.sub. ionization 9 O.sub.2 + e.sub. .fwdarw. O.sub.2+ + 2e.sub. ionization 10 O.sub.2 + e.sub. .fwdarw. O.sub.2 attachment 11 O.sub.2 + e.sub. .fwdarw. O.sub. + O dissociative attachment 12 O.sub.2 + O .fwdarw. O.sub.3 association 13 H + O.sub.2 .fwdarw. HO.sub.2 association 14 H + O.sub.3 .fwdarw. HO.sub.3 association 15 N + O .fwdarw. NO association 16 NO + O .fwdarw. NO.sub.2 association 17 N.sub.2+ + O.sub.2 .fwdarw. 2NO recombination 18 N.sub.2 + O .fwdarw. N.sub.2O association 19
[0189] An April, 1995 article, entitled Electrolysis Processes in D.C. Corona Discharges in Humid Air, written by J. Lelievre, N. Dubreuil and J.-L. Brisset, and published in the J. Phys. III France 5 on pages 447-457 therein (the subject matter of which is herein expressly incorporated by reference) was primarily focused on DC corona discharges and noted that according to the polarity of the active electrode, anions such as nitrites and nitrates, carbonates and oxygen anions were the prominent ions at a negative discharge; while protons, oxygen and NO.sub.x cations were the major cationic species created in a positive discharge. Concentrations of nitrites and/or nitrates could vary with current intensity. The article also disclosed in Table I therein (i.e., Table 2 reproduced herein) a variety of species and standard electrode potentials which are capable of being present in the DC plasmas created therein. Accordingly, one would expect such species as being capable of being present in the adjustable plasma(s) 4 of the present invention depending on the specific operating conditions utilized to create the adjustable plasma(s) 4.
TABLE-US-00002 TABLE 2 O.sub.3/O.sub.2 [2.07] NO.sub.3.sup./N.sub.2 [1.24] HO.sub.2.sup./OH.sup. [0.88] N.sub.2/NH.sub.4.sup.+ [0.27] HN.sub.3/NH.sub.4.sup.+ [1.96] O.sub.2/H.sub.2O [1.23] NO.sub.3.sup./N.sub.2O.sub.4 [0.81] O.sub.2/HO.sub.2.sup. [0.08] H.sub.2O.sub.2/H.sub.2O [1.77] NO.sub.3.sup./N.sub.2O [1.11] NO.sub.3.sup./NO.sub.2 [0.81] CO.sub.2/CO [0.12] H.sub.2O/N.sub.2 [1.77] N.sub.2O.sub.4/HNO.sub.2 [1.07] NO/H.sub.2N.sub.2O.sub.2 [0.71] CO.sub.2/HCO.sub.2H [0.2] NO/N.sub.2O [1.59] HNO.sub.2/NO [0.98] O.sub.2/H.sub.2O.sub.2 [0.69] N.sub.2/N.sub.2H.sub.5.sup.+ [0.23] NO.sup.+/NO [1.46] NO.sub.3.sup./NO [0.96] NO.sub.3.sup./NO.sub.2.sup. [0.49] CO.sub.2/H.sub.2C.sub.2O.sub.4 [0.49] H.sub.3NOH.sup.+/N.sub.2H.sub.5.sup.+ [1.42] NO.sub.3.sup./HNO.sub.2 [0.94] O.sub.2/OH.sup. [0.41] H.sub.2O/e.sub.aq. [2.07] N.sub.2H.sub.5/NH.sub.4.sup.+ [1.27]
[0190] An article published 15 Oct. 2003, entitled, Optical and electrical diagnostics of a non-equilibrium air plasma, authored by XinPei Lu, Frank Leipold and Mounir Laroussi, and published in the Journal of Physics D:Applied Physics, on pages 2662-2666 therein (the subject matter of which is herein expressly incorporated by reference) focused on the application of AC (60 Hz) high voltage (<20 kV) to a pair of parallel electrodes separated by an air gap. One of the electrodes was a metal disc, while the other electrode was a surface of water. Spectroscopic measurements performed showed that light emission from the plasma was dominated by OH (A-X, N.sub.2 (C-B) and N.sub.2.sup.+ (B-X) transitions. The spectra from
[0191] An article by Z. Machala, et al., entitled, Emission spectroscopy of atmospheric pressure plasmas for bio-medical and environmental applications, published in 2007 in the Journal of Molecular Spectroscopy, discloses additional emission spectra of atmospheric pressure plasmas. The spectra from
[0192] An article by M. Laroussi and X. Lu, entitled, Room-temperature atmospheric pressure plasma plume for biomedical applications, published in 2005 in Applied Physics Letters, discloses emission spectra fro OH, N.sub.2, N.sub.2.sup.+, He and O. The spectra from
[0193] Also known in the art is the generation of ozone by pulsed-corona discharge over a water surface as disclosed by Petr Lukes, et al, in the article, Generation of ozone by pulsed corona discharge over water surface in hybrid gas-liquid electrical discharge reactor, published in J. Phys. D: Appl. Phys. 38 (2005) 409-416 (the subject matter of which is herein expressly incorporated by reference). Lukes, et al, disclose the formation of ozone by pulse-positive corona discharge generated in a gas phase between a planar high voltage electrode (made from reticulated vitreous carbon) and a water surface, said water having an immersed ground stainless steel point mechanically-shaped electrode located within the water and being powered by a separate electrical source. Various desirable species are disclosed as being formed in the liquid, some of which species, depending on the specific operating conditions of the embodiments disclosed herein, could also be expected to be present.
[0194] Further, U.S. Pat. No. 6,749,759 issued on Jun. 15, 2004 to Denes, et al, and entitled Method for Disinfecting a Dense Fluid Medium in a Dense Medium Plasma Reactor (the subject matter of which is herein expressly incorporated by reference), discloses a method for disinfecting a dense fluid medium in a dense medium plasma reactor. Denes, et al, disclose decontamination and disinfection of potable water for a variety of purposes. Denes, et al, disclose various atmospheric pressure plasma environments, as well as gas phase discharges, pulsed high voltage discharges, etc. Denes, et al, use a first electrode comprising a first conductive material immersed within the dense fluid medium and a second electrode comprising a second conductive material, also immersed within the dense fluid medium. Denes, et al then apply an electric potential between the first and second electrodes to create a discharge zone between the electrodes to produce reactive species in the dense fluid medium.
[0195] All of the constituents discussed above, if present, can be at least partially (or substantially completely) managed, controlled, adjusted, maximized, minimized, eliminated, etc., as a function of such species being helpful or harmful to the resultant nanoparticles and/or nanoparticle/solutions produced, and then may need to be controlled by a variety of different techniques (discussed in more detail later herein). As shown in
[0196] Additionally, by controlling the temperature of the liquid 3 in contact with the adjustable plasma 4, the amount(s) of certain constituents present in the liquid 3 (e.g., for at least a portion of the process and/or in final products produced) can be maximized or minimized. For example, if a gaseous species such as ozone created in the adjustable plasma 4 was desired to be present in relatively larger quantities, the temperature of the liquid 3 could be reduced (e.g., by a chilling or refrigerating procedure) to permit the liquid 3 to contain more of the gaseous species. In contrast, if a relatively lesser amount of a particular gaseous species was desired to be present in the liquid 3, the temperature of the liquid 3 could be increased (e.g., by thermal heating, microwave heating, etc.) to contain less of the gaseous species. Similarly, often species in the adjustable plasma 4 being present in the liquid 3 could be adjusting/controlling the temperature of the liquid 3 to increase or decrease the amount of such species present in the liquid 3.
[0197] Further, certain processing enhancers may also be added to or mixed with the liquid(s). The processing enhancers include both solids and liquids. The processing enhancer may provide certain processing advantages and/or desirable final product characteristics. Examples of processing enhancers may include certain acids, certain bases, salts, nitrates, etc. Processing enhancers may assist in one or more of the electrochemical reactions disclosed herein; and/or may assist in achieving one or more desirable properties in products formed according to the teachings herein.
[0198] Further, depending on, for example, electric, magnetic and/or electromagnetic field strength, polarity, etc., in and around the liquid 3, as well as the volume of liquid 3 present (e.g., a function of, for example, the cross-sectional size and shape of the trough member 30 and/or flow rate of the liquid 3) discussed in greater detail elsewhere herein), the physical and chemical construction of the electrode(s) 1 and 5, atmosphere (naturally occurring or supplied), liquid 3 composition, greater or lesser amounts of electrode(s) materials(s) (e.g., metal(s) or derivatives of metals) may be found in the liquid 3. Additional important information is disclosed in copending patent application entitled Methods for Controlling Crystal Growth, Crystallization, Structures and Phases in Materials and Systems; which was filed on Mar. 21, 2003, and was published by the World Intellectual Property Organization under publication number WO 03/089692 on Oct. 30, 2003 and the U.S. National Phase application, which was filed on Jun. 6, 2005, and was published by the United States Patent and Trademark Office under publication number 20060037177 on Feb. 23, 2006 (the inventors of each being Bentley J. Blum, Juliana H. J. Brooks and Mark G. Mortenson). The subject matter of both applications is herein expressly incorporated by reference. These published applications disclose (among other things) that the influence of, for example, electric fields, magnetic fields, electromagnetic energy, etc., have proven to be very important in the formation and/or control of various structures in a variety of solids, liquids, gases and/or plasmas. Such disclosed effects are also relevant in the embodiments disclosed herein. Further, the observation of extreme variations of, for example, pH in and around electrodes having a potential applied thereto (and current flow therethrough) also controls reaction products and/or reaction rates. Thus, a complex set of reactions are likely to be occurring at each electrode 1, 5 and electrode assemblies or electrode sets (e.g., 1, 5; 1, 1; 5, 5; etc.).
[0199] In certain situations, the material(s) (e.g., metal(s), metal ion(s), metal composite(s) or constituents (e.g., Lewis acids, Bronsted-Lowry acids, etc.) and/or inorganics found in the liquid 3 (e.g., after processing thereof) may have very desirable effects, in which case relatively large amounts of such material(s) will be desirable; whereas in other cases, certain materials found in the liquid (e.g., undesirable by-products) may have undesirable effects, and thus minimal amounts of such material(s) may be desired in the final product. Further, the structure/composition of the liquid 3 per se may also be beneficially or negatively affected by the processing conditions of the present invention. Accordingly, electrode composition can play an important role in the ultimate material(s) (e.g., nanoparticles and/or nanoparticle/solutions) that are formed according to the embodiments disclosed herein. As discussed above herein, the atmosphere involved with the reactions occurring at the electrode(s) 1 (and 5) plays an important role. However, electrode composition also plays an important role in that the electrodes 1 and 5 themselves can become part of, at least partially, intermediate and/or final products formed. Alternatively, electrodes may have a substantial role in the final products. In other words, the composition of the electrodes may be found in large part in the final products of the invention or may comprise only a small chemical part of products produced according to the embodiments disclosed herein. In this regard, when electrode(s) 1, 5 are found to be somewhat reactive according to the process conditions of the various embodiments disclosed herein, it can be expected that ions and/or physical particles (e.g., metal-based particles of single or multiple crystals) from the electrodes can become part of a final product. Such ions and/or physical components may be present as a predominant part of a particle in a final product, may exist for only a portion of the process, or may be part of a core in a core-shell arrangement present in a final product. Further, the core-shell arrangement need not include complete shells. For example, partial shells and/or surface irregularities or specific desirable surface shapes on a formed nanoparticle can have large influence on the ultimate performance of such nanoparticles in their intended use.
[0200] Also, the nature and/or amount of the surface change (i.e., positive or negative) on formed nanoparticles can also have a large influence on the behavior and/or effects of the nanoparticle/solution of final products and their relative performance.
[0201] Such surface changes are commonly referred to as zeta potential. In general, the larger the zeta potential (either positive or negative), the greater the stability of the nanoparticles in the solution. However, by controlling the nature and/or amount of the surface changes of formed nanoparticles the performance of such nanoparticle solutions in a variety of systems can be controlled (discussed in greater detail later herein). It should be clear to an artisan of ordinary skill that slight adjustments of chemical composition, reactive atmospheres, power intensities, temperatures, etc., can cause a variety of different chemical compounds (both semi-permanent and transient) nanoparticles (and nanoparticle components) to be formed, as well as different nanoparticle/solutions (e.g., including modifying the structures of the liquid 3 (such as water) per se).
[0202] Still further, the electrode(s) 1 and 5 may be of similar chemical composition or completely different chemical compositions and/or made by similar or completely different forming processes in order to achieve various compositions of ions, compounds, and/or physical particles in liquid and/or structures of liquids per se and/or specific effects from final resultant products. For example, it may be desirable that electrode pairs, shown in the various embodiments herein, be of the same or substantially similar composition, or it may be desirable for the electrode pairs, shown in the various embodiments herein, to be of different chemical composition(s). Different chemical compositions may result in, of course, different constituents being present for possible reaction in the various plasma and/or electrochemical embodiments disclosed herein. Further, a single electrode 1 or 5 (or electrode pair) can be made of at least two different metals, such that components of each of the metals, under the process conditions of the disclosed embodiments, can interact with each other, as well as with other constituents in the plasma(s) 4 and or liquid(s) 3, fields, etc., present in, for example, the plasma 4 and/or the liquid 3.
[0203] Further, the distance between the electrode(s) 1 and 5; or 1 and 1 (e.g., see
[0204] The power applied through the power source 10 may be any suitable power which creates a desirable adjustable plasma 4 and desirable adjustable electrochemical reaction under all of the process conditions of the present invention. In one preferred mode of the invention, an alternating current from a step-up transformer (discussed in the Power Sources section and the Examples section) is utilized. In other preferred embodiments of the invention, polarity of an alternating current power source is modified by diode bridges to result in a positive electrode 1 and a negative electrode 5; as well as a positive electrode 5 and a negative electrode 1. In general, the combination of electrode(s) components 1 and 5, physical size and shape of the electrode(s) 1 and 5, electrode manufacturing process, mass of electrodes 1 and/or 5, the distance x between the tip 9 of electrode 1 above the surface 2 of the liquid 3, the composition of the gas between the electrode tip 9 and the surface 2, the flow rate and/or flow direction F of the liquid 3, compositions of the liquid 3, conductivity of the liquid 3, temperature of the liquid 3, voltage, amperage, polarity of the electrodes, etc., all contribute to the design, and thus power requirements (e.g., breakdown electric field or E of Equation 1) all influence the formation of a controlled or adjustable plasma 4 between the surface 2 of the liquid 3 and the electrode tip 9.
[0205] In further reference to the configurations shown in
[0206] For example,
[0207] The portions 6a and 6b can be covered by, for example, additional electrical insulating portions 7a and 7b. The electrical insulating portions 7a and 7b can be any suitable electrically insulating material (e.g., plastic, rubber, fibrous materials, etc.) which prevent undesirable currents, voltage, arcing, etc., that could occur when an individual interfaces with the electrode holders 6a and 6b (e.g., attempts to adjust the height of the electrodes). Moreover, rather than the electrical insulating portion 7a and 7b simply being a cover over the electrode holder 6a and 6b, such insulating portions 7a and 7b can be substantially completely made of an electrical insulating material. In this regard, a longitudinal interface may exist between the electrical insulating portions 7a/7b and the electrode holder 6a/6b respectively (e.g., the electrode holder 6a/6b may be made of a completely different material than the insulating portion 7a/7b and mechanically or chemically (e.g., adhesively) attached thereto.
[0208] Likewise, the insulating member 8 can be made of any suitable material which prevents undesirable electrical events (e.g., arcing, melting, etc.) from occurring, as well as any material which is structurally and environmentally suitable for practicing the present invention. Typical materials include structural plastics such as polycarbonate plexiglass (poly (methyl methacrylate), polystyrene, acrylics, and the like. Certain criteria for selecting structural plastics and the like include, but are not limited to, the ability to maintain shape and/or rigidity, while experiencing the electrical, temperature and environmental conditions of the process. Preferred materials include acrylics, plexiglass, and other polymer materials of known chemical, electrical and electrical resistance as well as relatively high mechanical stiffness. In this regard, desirable thicknesses for the member 8 are on the order of about 1/16 (1.6 mm-19.1 mm).
[0209] The power source 10 can be connected in any convenient electrical manner to the electrodes 1 and 5. For example, wires 11a and 11b can be located within at least a portion of the electrode holders 6a, 6b with a primary goal being achieving electrical connections between the portions 11a, 11b and thus the electrodes 1, 5. Specific details of preferred electrical connections are discussed elsewhere herein.
[0210]
[0211]
[0212] With regard to the adjustable plasmas 4 shown in
[0213] Still further, with regard to
[0214] Likewise, a set of manually controllable electrode configurations are shown in
[0215]
[0216] Moreover, it should be understood that in alternative preferred embodiments of the invention, well defined sharp points for the tip 9 are not always required. In this regard, the electrode 1 shown in
[0217] Accordingly, it should be understood that a variety of sizes and shapes corresponding to electrode 1 can be utilized in accordance with the teachings of the present invention. Still further, it should be noted that the tips 9 of the electrodes 1 shown in various figures herein may be shown as a relatively sharp point or a relatively blunt end. Unless specific aspects of these electrode tips are discussed in greater contextual detail, the actual shape of the electrode tip(s) shown in the FIGs. should not be given great significance.
[0218]
[0219] Still further, it should be understood that a trough member need not be only linear or I-shaped, but rather, may be shaped like a Y or like a , each portion of which may have similar or dissimilar cross-sections. One reason for a Y or -shaped trough member 30 is that two different sets of processing conditions can exist in the two upper portions of the Y-shaped trough member 30. For example, one or more constituents produced in the portion(s) 30a, 30b and/or 30c could be transient and/or semi permanent. If such constituent(s) produced, for example, in portion 30a is to be desirably and controllably reacted with one or more constituents produced in, for example, portion 30b, then a final product (e.g., properties of a final product) which results from such mixing could be a function of when constituents formed in the portions 30a and 30b are mixed together. For example, final properties of products made under similar sets of conditions experienced in, for example, the portions 30a and 30b, if combined in, for example, the section 30d (or 30d), could be different from final properties of products made in the portions 30a and 30b and such products are not combined together until minutes or hours or days later. Also, the temperature of liquids entering the section 30d (or 30d) can be monitored/controlled to maximize certain desirable properties of final products and/or minimize certain undesirable products. Further, a third set of processing conditions can exist in the bottom portion of the Y-shaped trough member 30. Thus, two different fluids 3, of different compositions and/or different reactants, could be brought together into the bottom portion of the Y-shaped trough member 30 and processed together to from a large variety of final products some of which are not achievable by separately manufacturing certain solutions and later mixing such solutions together. Still further, processing enhancers may be selectively utilized in one or more of the portions 30a, 30b, 30c, 30d and/or 30o (or at any point in the trough member 30).
[0220]
[0221]
[0222]
[0223] It should be understood that a variety of different shapes can exist for the trough member 30, any one of which can produce desirable results.
[0224] Again with regard to
[0225]
[0226]
[0227]
[0228] Likewise,
[0229] Accordingly, it should be clear from the disclosed embodiments that the various electrode configurations or sets shown in
[0230]
[0231] Likewise,
[0232]
[0233]
[0234] As discussed herein, the electrode configurations or sets shown generally in
[0235]
[0236] Likewise, several additional alternative cross-sectional embodiments for the liquid-containing trough member 30 are shown in
[0237] Similarly, the influence of many aspects of the electrode 5 on the liquid 3 (e.g., electrochemical interactions) is also, at least partially, a function of the amount of fluid juxtaposed to the electrode(s) 5, the temperature of the fluid 3, etc., as discussed immediately above herein.
[0238] Further, electric and magnetic field concentrations can also significantly affect the interaction of the plasma 4 with the liquid 3, as well as affect the interactions of the electrode(s) 5 with the liquid 3. For example, without wishing to be bound by any particular theory or explanation, when the liquid 3 comprises water, a variety of electric field, magnetic field and/or electromagnetic field influences can occur. Specifically, water is a known dipolar molecule which can be at least partially aligned by an electric field. Having partial alignment of water molecules with an electric field can, for example, cause previously existing hydrogen bonding and bonding angles to be oriented at an angle different than prior to electric field exposure, cause different vibrational activity, or such bonds may actually be broken. Such changing in water structure can result in the water having a different (e.g., higher) reactivity. Further, the presence of electric and magnetic fields can have opposite effects on ordering or structuring of water and/or nanoparticles present in the water. It is possible that unstructured or small structured water having relatively fewer hydrogen bonds relative to, for example, very structured water, can result in a more reactive (e.g., chemically more reactive) environment. This is in contrast to open or higher hydrogen-bonded networks which can slow reactions due to, for example, increased viscosity, reduced diffusivities and a smaller activity of water molecules. Accordingly, factors which apparently reduce hydrogen bonding and hydrogen bond strength (e.g, electric fields) and/or increase vibrational activity, can encourage reactivity and kinetics of various reactions.
[0239] Further, electromagnetic radiation can also have direct and indirect effects on water and it is possible that the electromagnetic radiation per se (e.g., that radiation emitted from the plasma 4), rather than the individual electric or magnetic fields alone can have such effects, as disclosed in the aforementioned published patent application entitled Methods for Controlling Crystal Growth, Crystallization, Structures and Phases in Materials and Systems which has been incorporated by reference herein. Different spectra associated with different plasmas 4 are discussed in the Examples section herein.
[0240] Further, by passing an electric current through the electrode(s) 1 and/or 5 disclosed herein, the voltages present on, for example, the electrode(s) 5 can have an orientation effect (i.e., temporary, semi-permanent or longer) on the water molecules. The presence of other constituents (i.e., charged species) in the water may enhance such orientation effects. Such orientation effects may cause, for example, hydrogen bond breakage and localized density changes (i.e., decreases). Further, electric fields are also known to lower the dielectric constant of water due to the changing (e.g., reduction of) the hydrogen bonding network. Such changing of networks should change the solubility properties of water and may assist in the concentration or dissolution of a variety of gases and/or constituents or reactive species in the liquid 3 (e.g., water) within the trough member 30. Still further, it is possible that the changing or breaking of hydrogen bonds from application of electromagnetic radiation (and/or electric and magnetic fields) can perturb gas/liquid interfaces and result in more reactive species. Still further, changes in hydrogen bonding can affect carbon dioxide hydration resulting in, among other things, pH changes. Thus, when localized pH changes occur around, for example, at least one or more of the electrode(s) 5 (or electrode(s) 1), many of the possible reactants (discussed elsewhere herein) will react differently with themselves and/or the atmosphere and/or the adjustable plasma(s) 4 as well as the electrode(s) 1 and/or 5, per se. The presence of Lewis acids and/or Bronsted-Lowry acids, can also greatly influence reactions.
[0241] Further, a trough member 30 may comprise more than one cross-sectional shapes along its entire longitudinal length. The incorporation of multiple cross-sectional shapes along the longitudinal length of a trough member 30 can result in, for example, a varying field or concentration or reaction effects being produced by the inventive embodiments disclosed herein. Additionally, various modifications can be added at points along the longitudinal length of the trough member 30 which can enhance and/or diminish various of the field effects discussed above herein. In this regard, compositions of materials in and/or around the trough (e.g., metals located outside or within at least a portion of the trough member 30) can act as concentrators or enhancers of various of the fields present in and around the electrode(s) 1 and/or 5. Additionally, applications of externally-applied fields (e.g., electric, magnetic, electromagnetic, etc.) and/or the placement of certain reactive materials within the trough member 30 (e.g., at least partially contacting a portion of the liquid 3 flowing thereby) can also result in: (1) a gathering, collecting or filtering of undesirable species; or (2) placement of desirable species onto, for example, at least a portion of an outer surface of nanoparticles already formed upstream therefrom. Further, it should be understood that a trough member 30 may not be linear or I-shaped, but rather may be Y-shaped or -shaped, with each portion of the Y or having a different (or similar) cross-section. One reason for a Y or -shaped trough member 30 is that two (or more) different sets of processing conditions can exist in the two (or more) upper portions of the Y-shaped or -shaped trough member 30. Additionally, the Y-shaped or -shaped trough members 30 permit certain transient or semi-permanent constituents present in the liquids 3 to interact; in contrast to separately manufactured liquids 3 in I-shaped trough members and mixing such liquids 3 together at a point in time which is minutes, hours or days after the formation of the liquids 3. Further, another additional set of processing conditions can exist in the bottom portion of the Y-shaped or -shaped trough members 30. Thus, different fluids 3, of different compositions and/or different reactants (e.g., containing certain transient or semi-permanent species), could be brought together into the bottom portion of the Y-shaped or -shaped trough members 30 and processed together to from a large variety of final products.
[0242]
[0243]
[0244]
[0245]
[0246]
[0247]
[0248]
[0249] It should be understood that a variety of different shapes can exist for the trough member 30, any one of which can produce desirable results.
[0250]
[0251]
[0252]
[0253]
[0254] In general, the liquid transport means 40 may include any means for moving liquids 3 including, but not limited to a gravity-fed or hydrostatic means, a pumping means, a peristaltic pumping means, a regulating or valve means, etc. However, the liquid transport means 40 should be capable of reliably and/or controllably introducing known amounts of the liquid 3 into the trough member 30. Once the liquid 3 is provided into the trough member 30, means for continually moving the liquid 3 within the trough member 30 may or may not be required. However, a simple means includes the trough member 30 being situated on a slight angle (e.g., less than one degree to a few degrees) relative to the support surface upon which the trough member 30 is located. For example, the difference in vertical height between an inlet portion 31 and an outlet portion 32 relative to the support surface may be all that is required, so long as the viscosity of the liquid 3 is not too high (e.g., any viscosity around the viscosity of water can be controlled by gravity flow once such fluids are contained or located within the trough member 30). In this regard,
[0255] Further, when viscosities of the liquid 3 increase such that gravity alone is insufficient, other phenomena such as specific uses of hydrostatic head pressure or hydrostatic pressure can also be utilized to achieve desirable fluid flow. Further, additional means for moving the liquid 3 along the trough member 30 could also be provided inside the trough member 30, Such means for moving the liquid 3 include mechanical means such as paddles, fans, propellers, augers, etc., acoustic means such as transducers, thermal means such as heaters and or chillers (which may have additional processing benefits), etc. The additional means for moving the liquid 3 can cause liquid 3 to flow in differing amounts in different portions along the longitudinal length of the trough member 30. In this regard, for example, if liquid 3 initially flowed slowly through a first longitudinal portion of the trough member 30, the liquid 3 could be made to flow more quickly further downstream thereof by, for example, as discussed earlier herein, changing the cross-sectional shape of the trough member 30. Additionally, cross-sectional shapes of the trough member 30 could also contain therein additional fluid handling means which could speed up or slow down the rate the liquid 3 flows through the trough member 30. Accordingly, great flexibility can be achieved by the addition of such means for moving the fluid 3.
[0256]
[0257]
[0258]
[0259]
[0260]
[0261] In particular,
[0262] In contrast,
[0263]
[0264] As disclosed herein, each of the electrode configurations shown in
[0265]
[0266] Possible ion exchange membranes 50 which function as a means for separating for use with the present invention include Anionic membranes and Cationic membranes. These membranes can be homogenous, heterogeneous or microporous, symmetric or asymmetric in structure, solid or liquid, can carry a positive or negative charge or be neutral or bipolar. Membrane thickness may vary from as small as 100 micron to several mm.
[0267] Some specific ionic membranes for use with certain embodiments of the present invention include, but are not limited to: [0268] Homogeneous polymerization type membranes such as sulfonated and aminated styrene-divinylbenzene copolymers [0269] condensation and heterogeneous membranes [0270] perfluorocarbon cation exchange membranes [0271] membrane chlor-alkali technology [0272] Most of cation and anion exchange membranes used in the industrial area are composed of derivatives of styrene-divinylbenzene copolymer, chloromethylstyrene-divinylbenzene copolymer or vinylpyridines-divinylbenzene copolymer. [0273] The films used that are the basis of the membrane are generally polyethylene, polypropylene (ref. U, polytetrafluoroethylene, PFA, FEP and so on. [0274] Trifluoroacrylate and styrene are used in some cases. [0275] Conventional polymers such as polyethersulfone, polyphenylene oxide, polyvinyl chloride, polyvinylidene fluoride and so on. Especially, sulfonation or chloromethylation and amination of polyethersulfone or polyphenylene oxide. [0276] Hydrocarbon ion exchange membranes are generally composed of derivatives of styrene-divinylbenzene copolymer and other inert polymers such as polyethylene, polyvinyl chloride and so on.
[0277]
[0278]
[0279]
[0280]
[0281]
[0282]
Electrode Control Devices
[0283] The electrode control devices shown generally in, for example,
[0284] First, specific reference is made to
[0285] The drive motors 21a/21b can be any suitable drive motor which is capable of small rotations (e.g., slightly below 1/360 or slightly above 1/360) such that small rotational changes in the drive shaft 231a are translated into small vertical changes in the electrode assemblies. A preferred drive motor includes a drive motor manufactured by RMS Technologies model 1MC17-S04 step motor, which is a DC-powered step motor. This step motors 21a/21b include an RS-232 connection 22a/22b, respectively, which permits the step motors to be driven by a remote control apparatus such as a computer or a controller.
[0286] With reference to
[0287] The electrode assembly specifically shown in
[0288] With regard to the size of the control device 20 shown in
[0289] Further, in each of the embodiments of the invention shown in
[0290]
[0291]
[0292]
[0293]
[0294]
[0295]
[0296]
[0297]
[0298]
[0299]
[0300]
[0301]
[0302] A fan assembly, not shown in the drawings, can be attached to a surrounding housing which permits cooling air to blow across the cooling fins 282. The fan assembly could comprise a fan similar to a computer cooling fan, or the like. A preferred fan assembly comprises, for example, a Dynatron DF124020BA, DC brushless, 9000 RPM, ball bearing fan measuring about 40 mm40 mm20 mm works well. Specifically, this fan has an air flow of approximately 10 cubic feet per minute.
[0303]
Power Sources
[0304] A variety of power sources are suitable for use with the present invention. Power sources such as AC sources of a variety of frequencies, DC sources of a variety of frequencies, rectified AC sources of various polarities, etc., can be used. However, in the preferred embodiments disclosed herein, an AC power source is utilized directly, or an AC power source has been rectified to create a specific DC source of variable polarity.
[0305]
[0306] When a secondary coil 603 is positioned near the primary coil 601 and core 602, this flux will link the secondary coil 603 with the primary coil 601. This linking of the secondary coil 603 induces a voltage across the secondary terminals. The magnitude of the voltage at the secondary terminals is related directly to the ratio of the secondary coil turns to the primary coil turns. More turns on the secondary coil 603 than the primary coil 601 results in a step up in voltage, while fewer turns results in a step down in voltage.
[0307] Preferred transformer(s) 60 for use in various embodiments disclosed herein have deliberately poor output voltage regulation made possible by the use of magnetic shunts in the transformer 60. These transformers 60 are known as neon sign transformers. This configuration limits current flow into the electrode(s) 1/5. With a large change in output load voltage, the transformer 60 maintains output load current within a relatively narrow range.
[0308] The transformer 60 is rated for its secondary open circuit voltage and secondary short circuit current. Open circuit voltage (OCV) appears at the output terminals of the transformer 60 only when no electrical connection is present. Likewise, short circuit current is only drawn from the output terminals if a short is placed across those terminals (in which case the output voltage equals zero). However, when a load is connected across these same terminals, the output voltage of the transformer 60 should fall somewhere between zero and the rated OCV. In fact, if the transformer 60 is loaded properly, that voltage will be about half the rated OCV.
[0309] The transformer 60 is known as a Balanced Mid-Point Referenced Design (e.g., also formerly known as balanced midpoint grounded). This is most commonly found in mid to higher voltage rated transformers and most 60 mA transformers. This is the only type transformer acceptable in a mid-point return wired system. The balanced transformer 60 has one primary coil 601 with two secondary coils 603, one on each side of the primary coil 601 (as shown generally in the schematic view in
[0310] In alternating current (AC) circuits possessing a line power factor or 1 (or 100%), the voltage and current each start at zero, rise to a crest, fall to zero, go to a negative crest and back up to zero. This completes one cycle of a typical sinewave. This happens 60 times per second in a typical US application. Thus, such a voltage or current has a characteristic frequency of 60 cycles per second (or 60 Hertz) power. Power factor relates to the position of the voltage waveform relative to the current waveform. When both waveforms pass through zero together and their crests are together, they are in phase and the power factor is 1, or 100%.
[0311] The normal power factor of most such transformers 60 is largely due to the effect of the magnetic shunts 604 and the secondary coil 603, which effectively add an inductor into the output of the transformer's 60 circuit to limit current to the electrodes 1/5. The power factor can be increased to a higher power factor by the use of capacitor(s) 61 placed across the primary coil 601 of the transformer, 60 which brings the input voltage and current waves more into phase.
[0312] The unloaded voltage of any transformer 60 to be used in the present invention is important, as well as the internal structure thereof. Desirable unloaded transformers for use in the present invention include those that are around 9,000 volts, 10,000 volts, 12,000 volts and 15,000 volts. However, these particular unloaded volt transformer measurements should not be viewed as limiting the scope acceptable power sources as additional embodiments. A specific desirable transformer for use with various embodiments of the invention disclosed herein is made by Franceformer, Catalog No. 9060-P-E which operates at: primarily 120 volts, 60 Hz; and secondary 9,000 volts, 60 mA.
[0313]
[0314]
[0315]
[0316]
[0317] Accordingly, each transformer assembly 60a-60h (and/or 60a-60h; and/or 60a-60h) can be the same transformer, or can be a combination of different transformers (as well as different polarities). The choice of transformer, power factor, capacitor(s) 61, polarity, electrode designs, electrode location, electrode composition, cross-sectional shape(s) of the trough member 30, local or global electrode composition, atmosphere(s), local or global liquid 3 flow rate(s), liquid 3 local components, volume of liquid 3 locally subjected to various fields in the trough member 30, neighboring (e.g., both upstream and downstream) electrode sets, local field concentrations, the use and/or position and/or composition of any membrane 50, etc., are all factors which influence processing conditions as well as composition and/or volume of constituents produced in the liquid 3, nanoparticles and nanoparticle/solutions made according to the various embodiments disclosed herein. Accordingly, a plethora of embodiments can be practiced according to the detailed disclosure presented herein.
Electrode Height Control/Automatic Control Device
[0318] A preferred embodiment of the invention utilizes the automatic control devices 20 shown in various figures herein. The step motors 21a and 21b shown in, for example,
[0319] Each set of electrodes in each embodiment of the invention has an established target voltage range. The size or magnitude of acceptable range varies by an amount between about 1% and about 10%-15% of the target voltage. Some embodiments of the invention are more sensitive to voltage changes and these embodiments should have, typically, smaller acceptable voltage ranges; whereas other embodiments of the invention are less sensitive to voltage and should have, typically, larger acceptable ranges. Accordingly, by utilizing the circuit diagram shown in
[0320] The computer or logic control for the disclosed interrogation voltage adjustment techniques are achieved by any conventional program or controller, including, for example, in a preferred embodiment, standard visual basic programming steps utilized in a PC. Such programming steps include interrogating, reading, comparing, and sending an appropriate actuation symbol to increase or decrease voltage (e.g., raise or lower an electrode relative to the surface 2 of the liquid 3). Such techniques should be understood by an artisan of ordinary skill.
Examples 1-12
[0321] The following examples serve to illustrate certain embodiments of the invention but should not to be construed as limiting the scope of the disclosure.
[0322] In general, each of the 12 Examples utilize certain embodiments of the invention associated with the apparatuses generally shown in
[0323] Purified water (discussed later herein) was used as the liquid 3 in all of Examples 1-12. The depth d (refer to
[0324] The rate of flow of the water 3 in the trough member 30 was about 150-200 ml/minute, depending on which Example was being practiced. Specifically, for example, silver-based and copper-based nanoparticle/solution raw materials made in Examples 1-3 and 5 all utilized a flow rate of about 200 ml/minute; and a zinc-based nanoparticle/solution raw material made in Example 4 utilized a flow rate of about 150 ml/minute. Such flow of water 3 was obtained by utilizing a Masterflex US pump drive 40 rated at 0.1 horsepower, 10-600 rpm. The model number of the Masterflex pump 40 was 77300-40. The pump drive had a pump head also made by Masterflex known as Easy-Load Model No. 7518-10. In general terms, the head for the pump 40 is known as a peristaltic head. The pump 40 and head were controlled by a Masterflex@ LS Digital Modular Drive. The model number for the Digital Modular Drive is 77300-80. The precise settings on the Digital Modular Drive were, for example, 150 milliliters per minute for Example 4 and 200 ml/minute for the other Examples 1-3 and 5. Tygon@ tubing having a diameter of (i.e., size 06419-25) was placed into the peristaltic head. The tubing was made by Saint Gobain for Masterflex. One end of the tubing was delivered to a first end 31 of the trough member 30 by a flow diffusion means located therein. The flow diffusion means tended to minimize disturbance and bubbles in water 3 introduced into the trough member 30 as well as any pulsing condition generated by the peristaltic pump 40. In this regard, a small reservoir served as the diffusion means and was provided at a point vertically above the end 31 of the trough member 30 such that when the reservoir overflowed, a relatively steady flow of water 3 into the end 31 of the V-shaped trough member 30 occurred.
[0325] Additionally, the plastic portions of the control devices 20 were also made from plexiglass having a thickness of about (about 3 mm). With reference to
[0326] With regard to
[0327] The size and shape of each electrode 1 utilized was about the same. The shape of each electrode 1 was that of a right triangle with measurements of about 14 mm23 mm27 mm. The thickness of each electrode 1 was about 1 mm. Each triangular-shaped electrode 1 also had a hole therethrough at a base portion thereof, which permitted the point formed by the 23 mm and 27 mm sides to point toward the surface 2 of the water 3. The material comprising each electrode 1 was 99.95% pure (i.e., 3N5) unless otherwise stated herein. When silver was used for each electrode 1, the weight of each electrode was about 2 grams. When zinc was used for each electrode 1, the weight of each electrode was about 1.1 grams. When copper was used for each electrode 1, the weight of each electrode was about 1.5 grams.
[0328] The wires used to attach the triangular-shaped electrode 1 to the transformer 60 were, for Examples 1-4, 99.95% (3N5) silver wire, having a diameter of about 1.016 mm. The wire used to attach the triangular shaped electrode 1 in Example 5 was 99.95% pure (3N5) copper wire, also having a diameter of about 1.016 mm. Accordingly, a small loop of wire was placed through the hole in each electrode 1 to electrically connect thereto.
[0329] The wires used for each electrode 5 comprised 99.95% pure (3N5) each having a diameter of about 1.016 mm. The composition of the electrodes 5 in Examples 1-3 was silver; in Example 4 was zinc and in Example 5 was copper. All materials for the electrodes 1/5 were obtained from ESPI having an address of 1050 Benson Way, Ashland, Oreg. 97520.
[0330] The water 3 used in Examples 1-12 as an input into the trough member 30 was produced by a Reverse Osmosis process and deionization process. In essence, Reverse Osmosis (RO) is a pressure driven membrane separation process that separates species that are dissolved and/or suspended substances from the ground water. It is called reverse osmosis because pressure is applied to reverse the natural flow of osmosis (which seeks to balance the concentration of materials on both sides of the membrane). The applied pressure forces the water through the membrane leaving the contaminants on one side of the membrane and the purified water on the other. The reverse osmosis membrane utilized several thin layers or sheets of film that are bonded together and rolled in a spiral configuration around a plastic tube. (This is also known as a thin film composite or TFC membrane.) In addition to the removal of dissolved species, the RO membrane also separates out suspended materials including microorganisms that may be present in the water. After RO processing a mixed bed deionization filter was used. The total dissolved solvents (TDS) after both treatments was about 0.2 ppm, as measured by an Accumet AR20 pH/conductivity meter.
Example 1
Manufacturing Silver-Based Nanoparticles/Nanoparticle Solutions AT059 and AT038
[0331] This Example utilizes 99.95% pure silver electrodes 1 and 5. Table 3 summarizes portions of electrode design, location and operating voltages. As can be seen from Table 3, the target voltages were set to a low of about 550 volts and to a high of about 2,100 volts.
[0332] Further, bar charts of the actual and target voltages for each electrode in each of the 8 electrode sets, Set #1-Set #8, are shown in
TABLE-US-00003 TABLE 3 AT059 Flow Rate: 200 ml/min Room Temperature 23 C. Relative Humidity 23% Target Average Electrode Voltage Distance Distance Voltage Set # Set # (kV) c-c in/nmn x in/mm (kV) 7/177.8* 1 1a 2.11 0.29/7.37 2.05 5a 1.83 N/A 1.83 8/203.2 2 1b 1.09 0.22/5.59 1.16 5b 1.14 N/A 1.14 8/203.2 3 1c 1.02 0.22/5.59 0.96 5c 0.92 N/A 0.92 8/203.2 4 1d 0.90 0.15/3.81 0.88 5d 0.78 N/A 0.77 9/228.6 5 1e 1.26 0.22/5.59 1.34 5e 0.55 N/A 0.55 8/203.2 6 1f 0.96 0.22/5.59 0.99 5f 0.72 N/A 0.72 8/203.2 7 1g 0.89 0.22/5.59 0.81 5g 0.70 N/A 0.70 8/203.2 8 1h 0.63 0.15/3.81 0.59 5h 0.86 N/A 0.85 8/203.2** Output Water 67 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
Example 2
Manufacturing Silver-Based Nanoparticles/Nanoparticle Solutions AT060 and AT036
[0333] Table 4 contains information similar to that data shown in Table 3 relating to electrode set design, voltages, distances, etc. It is clear from Table 4 that the electrode configurations Set #1 and Set #2 were the same as of Set #'s 1-8 in Table and Example 1. Further electrode Sets 3-8 are all configured in the same manner and corresponded to a different electrode configuration from Set #1 and Set #2 herein, which electrode configuration corresponds to that configuration shown in
TABLE-US-00004 TABLE 4 AT060 Flow Rate: 200 ml/min Room Temperature 23 C. Relative Humidity 23% Target Average Electrode Voltage Distance Distance Voltage Set # Set # (kV) c-c in/mm x in/mm (kV) 7/177.8* 1 1a 2.41 0.37/9.4 2.14 5a 1.87 N/A 1.86 8/203.2 2 1b 1.33 0.26/6.6 1.33 5b 1.13 N/A 1.13 8/203.2 3 5c 0.79 N/A 0.80 5c 0.78 N/A 0.79 8/203.2 4 5d 0.85 N/A 0.86 5d 0.88 N/A 0.91 9/228.6 5 5e 1.07 N/A 1.06 5e 0.70 N/A 0.69 8/203.2 6 5f 0.94 N/A 0.92 5f 0.92 N/A 0.90 8/203.2 7 5g 1.02 N/A 1.00 5g 0.93 N/A 0.91 8/203.2 8 5h 0.62 N/A 0.63 5h 0.80 N/A 0.83 8/203.2** Output Water Temperature 73 C. *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0334]
[0335]
[0336] The product produced according to Example 2 is referred to herein as AT060.
Example 3
Manufacturing Silver-Based Nanoparticles/Nanoparticle Solutions AT031
[0337] Table 5 herein sets forth electrode design and target voltages for each of the 16 electrodes in each of the eight electrode sets (i.e., Set #1-Set #8) utilized to form the product formed in this example referred to herein as AT031.
TABLE-US-00005 TABLE 5 AT031 Flow Rate: 200 mi/min Room Temperature 22.5 C. Relative Humidity 47% Target Average Electrode Voltage Distance Distance Voltage Set # Set # Target c-c in/mm x in/mm (kV) 7/177.8* 1 1a 2.24 0.22/5.59 2.28 5a 1.84 N/A 1.84 8/203.2 2 5b 1.35 N/A 1.36 5b 1.55 N/A 1.55 8/203.2 3 5c 1.46 N/A 1.46 5c 1.54 N/A 1.54 8/203.2 4 1d 1.62 0.19/4.83 1.61 5d 1.25 N/A 1.27 9/228.6 5 5e 1.21 N/A 1.21 5e 0.82 N/A 0.82 8/203.2 6 5f 0.99 N/A 1.06 5g 0.92 N/A 0.92 8/203.2 7 5g 1.02 N/A 1.03 5g 0.96 N/A 0.95 8/203.2 8 5h 1.00 N/A 1.00 5h 0.97 N/A 1.23 8/203.2** Output Water 83 C. Temperature *Distance from water inlet to center of first electrode set? **Distance from center of last electrode set to water outlet?
[0338]
[0339]
[0340] It should be noted that electrode Set #1 was the same in this Example 3 as in each of Examples 1 and 2 (i.e., an electrode configuration of 1/5). Another 1/5 configuration was utilized for each of the other electrode sets, namely Set #2 and Set #'s 5-8 were all configured in a manner according to a 5/5 configuration.
Example 4
[0341] Manufacturing Zinc-based Nanoparticles/Nanoparticle Solutions BT006 and BT004 Material designated herein as BT006 was manufactured in accordance with the disclosure of Example 4. Similar to Examples 1-3, Table 6 herein discloses the precise electrode combinations in each of the 8 electrode sets (i.e, Set #1-Set #8). Likewise, target and actual voltage, distances, etc., are also reported. It should be noted that the electrode set assembly of Example 4 is similar to the electrode set assembly used in Example 1, except that 99.95% pure zinc was used only for the electrodes 5. The triangular-shaped portion of the electrodes 1 also comprised the same purity zinc, however the electrical connections to the triangular-shaped electrodes were all 99.95% pure silver-wire, discussed above herein. Also, the flow rate of the reaction 3 was lower in this Example then in all the other Examples.
TABLE-US-00006 TABLE 6 BT006 Flow Rate: 150 ml/min Room Temp 73.2-74.5 F. Relative humidity 21-22% Target Average Electrode Voltage Distance Distance Voltage Set # Set # Target c-c in/mm x in/mm (kV) 7/177.8* 1 1a 1.91 0.29/7.37 1.88 5a 1.64 N/A 1.64 8/203.2 2 1b 1.02 0.22/5.59 1,05 5b 1.09 N/A 1.08 8/203.2 3 1c 0.91 0.22/5.59 0.90 5c 0.81 N/A 0.82 8/203.2 4 1d 0.84 0.15/3.81 0.86 5d 0.74 N/A 0.75 9/228.6 5 1e 1.40 0.22/5.59 1.40 5e 0.54 N/A 0.55 8/203.2 6 1f 0.93 0.22/5.59 0.91 5f 0.61 N/A 0.63 8/203.2 7 1g 0.72 0.22/5.59 0.82 5g 0.75 N/A 0.75 8/203.2 8 1h 0,64 0.15/3.81 0.60 5h 0.81 N/A 0.81 8/203.2** Output Water 64 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0342]
Example 5
Manufacturing Copper-Based Nanoparticles/Nanoparticle Solutions CT006
[0343] A copper-based nanoparticle solution designated as CT006 was made according to the procedures disclosed in Example 5. In this regard, Table 7 sets forth pertinent operating parameters associated with each of the 16 electrodes in the 8 electrode sets.
TABLE-US-00007 TABLE 7 CT006 Flow Rate: 200 ml/min Relative Humidity 48% Room Temperature 23.1 C. Average Electrode Target Voltage Distance Distance Voltage Set # Set # (kV) c-c (in) x (in) (kV) 7/177.8* 1a 2.17 0.44/11.18 2.21 1 5a 1.75 N/A 1.74 8/203.2 5b 1.25 N/A 1.24 2 5b 1.64 N/A 1.63 8/203.2 1c 1.45 0.22/5.59 1.43 3 5c 0.83 N/A 0.83 8/203.2 5d 0.77 N/A 0.77 4 5d 0.86 N/A 0.86 9/228.6 5e 1.17 N/A 1.15 5 5e 0.76 N/A 0.76 8/203.2 5f 0.85 N/A 0.84 6 5f 0.84 N/A 0.83 8/203.2 5g 0.99 N/A 0.99 7 5g 0.87 N/A 0.86 8/203.2 5h 0.85 N/A 0.85 8 5h 1.10 N/A 1.09 8/203.2** Output Water Temperature 79 C. *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0344] Further,
[0345]
Characterization of Materials of Examples 1-5 and Mixtures Thereof
[0346] Each of the silver-based nanoparticles and nanoparticle/solutions made in Examples 1-3 (AT-059/AT-038), (AT060/AT036) and (AT031), respectively; as well as the zinc nanoparticles and nanoparticle/solutions made in Example 4 (BT-004); and the copper nanoparticles and nanoparticle-based/solutions made in Example 5 (CT-006) were physically characterized by a variety of techniques. Specifically, Tables 8 and 9 herein show each of the 5 raw materials made according to Examples 1-5 as well as 10 solutions or mixtures made therefrom, each of the solutions being designated GR1-GR10 or GR1B-GR10B. The amount by volume of each of the raw materials is reported for each of the 10 solutions manufactured. Further, atomic absorption spectroscopy (AAS) was performed on each of the raw materials of Examples 1-5 as well as on each of the 10 solutions GR1-GR10 derived therefrom. The amount of silver constituents, zinc constituents and/or copper constituents therein were thus determined. The atomic absorption spectroscopy results (AAS) are reported by metallic-based constituent.
TABLE-US-00008 TABLE 8 Analytical Results Solution Contents Cu Silver % by Zinc % by Copper % by Ag ppm Zn ppm ppm Metal ppm NO2 NO3 ID Constituent Volume Constituent Volume Constituent Volume (AAS) (AAS) (AAS) (ionic) (ppm) (ppm) pH AT- AT-036 100.0% 43.8 30.8 38.9 2.3 5.31 036 AT- AT-031 100.0% 41.3 23.3 41.3 15 5.23 031 AT- AT-038 100.0% 46 24.3 N/A 11.7 3.34 038 BT- BT-004 100.0% 23.1 ** N/A 33.7 3.52 004 CT- CT-006 100.0% 9.2 17.3 5.20 4.38 006 GR1 AT-036 22.8% BT-004 43.3% CT-006 33.9% 9.4 10.5 3.3 * 6.2 19.7 3.93 GR2 AT-031 24.2% BT-004 43.3% CT-006 32.5% 8.7 11.4 2.9 * 7.2 21.5 3.86 GR3 AT-038 21.7% BT-004 43.3% CT-006 35.0% 9.1 10.3 3.1 * N/A 23.7 3.64 GR4 AT-036 22.8% BT-004 77.2% 9.5 19.7 5.6 N/A 36.7 3.66 GR5 AT-031 24.2% BT-004 75.8% 10.4 18.8 5.9 N/A 26.6 3.68 GR6 AT-038 21.7% BT-004 78.3% 7.6 N/A 25.3 3.5 GR7 AT-036 45.7% BT-004 54.3% 17.3 13.3 8.9 N/A 19.6 3.83 GR8 AT-036 16.0% BT-004 84.0% 7.4 20.0 5.1 N/A 29.2 3.61 GR9 AT-036 70.0% BT-004 10.0% CT-006 20.0% 27.1 2.4 1.8 * 36.2 3.1 4.54 GR10 AT-36/31/39 34.3% BT-004 65.7% 13.2 15.6 7.3 N/A 23.4 3.62 N/A = pH is out of testing range * Can not be tested due to silver and copper interaction ** Zinc can not be tested with device
[0347] The AAS values were obtained from a Perkin Elmer AAnalyst 300 Spectrometer system. The samples from Examples 1-5 and Solutions GR1-GR10 were prepared by adding a small amount of nitric acid or hydrochloric acid (usually 2% of final volume) and then dilution to a desirable characteristic concentration range or linear range of the specific element to improve accuracy of the result. The desirable range is an order of magnitude estimate based on production parameters established during product development. For pure metals analysis, a known amount of feedstock material is digested in a known amount of acid and diluted to ensure that the signal strength of the absorbance will be within the tolerance limits and more specifically the most accurate range of the detector settings, better known as the linear range.
[0348] The specific operating procedure for the Perkin Elmer AAnalyst 300 system is as follows:
I) Principle
[0349] The Perkin Elmer AAnalyst 300 system consists of a high efficiency burner system with a Universal GemTip nebulizer and an atomic absorption spectrometer. The burner system provides the thermal energy necessary to dissociate the chemical compounds, providing free analyte atoms so that atomic absorption occurs. The spectrometer measures the amount of light absorbed at a specific wavelength using a hollow cathode lamp as the primary light source, a monochromator and a detector. A deuterium arc lamp corrects for background absorbance caused by non-atomic species in the atom cloud.
II) Instrument Setup
[0350] A) Empty waste container to mark. Add deionized water to drain tubing to ensure that water is present in the drain system float assembly. [0351] B) Ensure that the appropriate Hollow Cathode Lamp for the analyte to be analyzed is properly installed in the turret. [0352] C) Power AAnalyst 300 and computer ON. [0353] E) After the AAnalyst 300 has warmed up for approximately 3 minutes, start the AAWin Analyst software [0354] F) Recall Method to be analyzed. [0355] G) Ensure that the correct Default Conditions are entered. [0356] H) Align the Hollow Cathode Lamp. [0357] 1) Check that a proper peak and energy level has been established for the specific lamp. [0358] 2) Adjust the power and frequency of the lamp settings to obtain maximum energy. [0359] I) Store Method changes in Parameter Entry, Option, Store and #. [0360] J) Adjust Burner height. [0361] 1) Place a white sheet of paper behind the burner to confirm the location of the light beam. [0362] 2) Lower the burner head below the light beam with the vertical adjustment knob. [0363] 3) Press Cont (Continuous) to display an absorbance value. [0364] 4) Press A/Z to Autozero. [0365] 5) Raise the burner head with the vertical adjustment knob until the display indicates a slight absorbance (0.002). Slowly lower the head until the display returns to zero. [0366] Lower the head an additional quarter turn to complete the adjustment. [0367] K) Ignite flame. [0368] 1) Turn Fume Hood switch ON. [0369] 2) Open air compressor valve. Set pressure to 50 to 65 psi. [0370] 3) Open acetylene gas cylinder valve. Set output pressure to 12 to 14 psi. Replace cylinder when pressure falls to 85 psi to prevent valve and tubing damage from the presence of acetone. [0371] 4) Press Gases On/Off. Adjust oxidant flow to 4 Units. [0372] 5) Press Gases On/Off. Adjust acetylene gas flow to 2 Units. [0373] 6) Press Flame On/Off to turn flame on. [0374] Note: Do not directly view the lamp or flame without protective ultraviolet radiation eyewear. [0375] L) Aspirate deionized water through the burner head several minutes. [0376] M) Adjust Burner Position and Nebulizer. [0377] 1) Aspirate a standard with a signal of approximately 0.2 absorbance units. [0378] 2) Obtain maximum burner position absorbance by rotating the horizontal and rotational adjustment knobs. [0379] 3) Loosen the nebulizer locking ring by turning it clockwise. Slowly turn the nebulizer adjustment knob to obtain maximum absorbance. Lock the knob in place with the locking ring. [0380] Note: An element, such as Magnesium, which is at a wavelength where gases do not absorb is optimal for adjusting the Burner and Nebulizer. [0381] N) Allow 30 minutes to warm-up flame and lamp.
III) Calibration Procedure
[0382] A) Calibrate with standards that bracket the sample concentrations. [0383] B) WinAA Analyst software will automatically create a calibration curve for your sample readings. But check to ensure that proper absorption is established with each calibration standard. [0384] C) Enter Standard Concentration Values in the Default Conditions to calculate an AAnalyst 300 standard curve. [0385] 1) Enter the concentration of the lowest standard for STD1 using significant digits. [0386] 2) Enter the concentrations of the other standards of the calibration curve in ascending order and the concentration of the reslope standard. [0387] 3) Autozero with the blank before each standard. [0388] 4) Aspirate Standard 1, press 0 Calibrate to clear the previous curve. Aspirate the standards in numerical order. [0389] Press standard number and calibrate for each standard. [0390] 5) Press Print to print the graph and correlation coefficient. [0391] 6) Rerun one or all standards, if necessary. To rerun Standard 3, aspirate standard and press 3 Calibrate. [0392] 7) Reslope the standard curve by pressing Reslope after aspirating the designated reslope standard. [0393] D) The correlation coefficient should be greater than or equal to 0.990. [0394] E) Check the calibration curve for drift, accuracy and precision with standards and controls every 20 samples.
IV) Analysis Procedure
[0395] A) Autozero with the blank before each standard, control and sample. [0396] B) Aspirate sample and press Read Sample. The software will take 3 readings of absorbance and then average those readings. Wait until software says idle. Rerun the sample if the standard deviation is greater than 10% of the sample result.
V) Instrument Shutdown
[0397] A) Aspirate 5% Hydrochloric Acid (HCl) for 5 minutes and deionized water for 10 minutes to clean the burner head. Remove the capillary tube from the water. [0398] B) Press Flame On/Off to turn off flame. [0399] C) Close air compressor valve. [0400] D) Close acetylene cylinder valve. [0401] E) Press Bleed Gases to bleed the acetylene gas from the lines. The cylinder pressure should drop to zero. [0402] F) Exit the software, power OFF the AAnalyst 300, and shut down the computer.
[0403] Further, the last 4 columns of Table 8 disclose Metal PPM (Ionic); and 02 (ppm); NO.sub.3 (ppm); and pH. Each of these sets of numbers were determined by utilizing an ion selective electrode measurement technique. In particular, a NICO ion analyzer was utilized. Precise stabilization times and actual experimental procedures for collecting the data in each of these three columns of Table 8 (and Table 9) occurs immediately below.
Definitions
[0404] Stabilization TimesAfter immersing the electrodes in a new solution, the mV reading normally falls rapidly at first by several mV, and then gradually, and increasingly slowly, falls to a stable reading as the ISE membrane equilibrates and the reference electrode liquid junction potential stabilizes. This equilibration may take up to 3 or 4 minutes to reach a completely stable value. Sometimes the reading begins to rise again after a short period of stability and it is important to ensure that the recording is made at the lowest point, before this rise has proceeded to any great extent. In this study it was found that it was not necessary to wait for a completely stable reading but that satisfactory results could be obtained by taking a reading after a pre-set time, so that each measurement was made at the same point of the decay curve. For optimum performance it was found that this delay time should be at least two minutes to ensure that the reading was in the shallower part of the curve.
Procedure:
[0405] 1. Obtain two 150 mL beakers for each electrode to be used (typically 4). One beaker will be used for the solutions themselves and the other beaker will be filled with DI H2O to equalize the membranes of each electrode after each solution has been tested. [0406] 2. Obtain approximately 50 mL of the solution of interest for each electrode being used and its respective beaker. (Commonly about 200 mL for testing of Ag, NO3, NO2 and pH of a solution.) [0407] 3. If not already in place, locate and insert each desired ion selective electrode and its respective reference electrode into the appropriate receptacle. Only one electrode and its reference electrode per receptacle unless both ion selective electrodes require the use of the same reference electrode. Remove caps from each electrode and its corresponding reference electrode and place them into the electrode holder. [0408] 4. Turn on the computer associated with the NICO Ion Analyser and the software to operate it. [0409] 5. Open the 8-Channel Ion Electrode Analyser Software to operate the equipment. [0410] 6. Each ion selective electrode must be calibrated using the standards most accurate for our purposes. This calibration must be done each time the machine is turned on and for most accurate results, should be calibrated before each individual sample is tested. For each ion selective electrode, at the present time, 1 ppm, 10 ppm and 100 ppm give the best calibration for our solutions and their relative readings. Locate the Calibrate button on the software interface and follow the directions. [0411] 7. Each beaker is to be rinsed with DI H2O and swabbed with a lint free cloth before each use. [0412] 8. Fill each solution beaker with approximately 50 mL of the solution of interest and each equalizer beaker with approximately 100 mL of DI H2O. [0413] 9. Place each electrode into the equalizer beakers for approximately 15 seconds to ensure the membranes are in the same state and equal before each new solution is tested. [0414] 10. Remove electrodes from the DI H2O and wipe gently with a lint free cloth. [0415] 11. Place the electrodes into the solution so that each electrode and reference electrode is immersed at least 2 cm. Gently swirl the electrode and beaker to ensure homogeneity and good to remove any air bubbles that may be between the electrodes and the solution. [0416] 12. Let the electrodes remain undisturbed for 2-5 minutes depending on the stabilization time for the particular solution. [0417] 13. When the operator is satisfied with the reading and it occurs during the stabilization time, it must be recorded using the software. Upon hitting the Record button you will be prompted for a filename for this specific set of data. Also record these readings in a lab book that can be used for transferring numbers to external spreadsheets and the like. [0418] 14. Remove the electrodes from the solution and discard the solution. [0419] 15. Rinse each electrode with a stream of DI H2O. [0420] 16. Rinse each 150 mL beaker with DI H2O. [0421] 17. Dry both the electrodes and the beakers with lint free cloths. [0422] 18. Return each electrode to its holder and replace caps if no further testing is to occur.
[0423] Table 9 is also included herein which contains similar data to that data shown in Table 8 (and discussed in Examples 1-5) with the only exception being AT-031. The data in Table 9 comes from procedures copied from Examples 1-5 except that such procedures were conducted at a much later point in time (months apart). The raw materials and associated solutions, summarized in Table 9 show that the raw materials, as well as solutions therefrom, are substantially constant. Accordingly, the process is very reliable and reproducible.
TABLE-US-00009 TABLE 9 Analytical Results Solution Contents Cu Silver % by Zinc % by Copper % by Ag ppm Zn ppm ppm Metal ppm NO2 NO3 ID Constituent Volume Constituent Volume Constituent Volume (AAS) (AAS) (AAS) Ionic (ppm) (ppm) pH AT-060 AT-060 100.0% 40.9 24.2 N/A 0.00 4.04 AT-031 AT-031 100.0% 41.3 23.3 41.3 15 5.23 AT-059 AT-059 100.0% 41.4 10.9 N/A 13.3 2.93 BT-006 BT-006 100.0% 24 ** N/A 20.8 3.13 CT-006 CT-006 100.0% 9.2 17.3 5.20 4.38 GR1B GR2B GR3B AT-059 24.2% BT-006 41.7% CT-006 34.2% 9.99 9.85 2.91 * N/A 58 3.27 GR4B GR5B AT-031 24.2% BT-006 75.8% 9.34 18.8 5.5 N/A 42.8 3.25 GR6B GR7B AT-060 43.9% BT-006 51.1% 20.6 12.7 8.7 N/A 30.5 3.38 GR8B AT-060 17.1% BT-006 82.9% 7.13 19.1 5 N/A 39.4 3.2 GR9B AT-060 70.0% BT-006 10.0% CT-006 20.0% 29.9 3.7 1.7 * N/A 15.8 3.82 GR10B AT-60/31/59 36.4% BT-006 63.6% 14.2 15.6 7 N/A 21.4 3.2 N/A = pH is out of testing range * Can not be tested due to silver and copper interaction ** Zinc can not be tested with device
Scanning Electron Microscopy/EDS
[0424] Scanning electron microscopy was performed on each of the new materials and solutions GR1-GR10 made according to Examples 1-5.
[0425]
[0426]
[0427] XEDS spectra were obtained using a EDAX Lithium drifted silicon detector system coupled to a IXRF Systems digital processor, which was interfaced with an AMRAY 1820 SEM with a LaB6 electron gun. Interpretation of all spectra generated was performed using IXRF EDS2008, version 1.0 Rev E data collection and processing software.
[0428] Instrumentation hardware and software setup entails positioning liquid samples from each Run ID on a sample stage in such a manner within the SEM to permit the area of interest to be under the electron beam for imaging purposes while allowing emitted energies to have optimum path to the XEDS detector. A sample is typically positioned about 18 mm beneath the aperture for the final lens and tilted nominally at 18 towards the XEDS detector. All work is accomplished within a vacuum chamber, maintained at about 10.sup.6 torr.
[0429] The final lens aperture is adjusted to 200 to 300 m in diameter and the beam spot size is adjusted to achieve an adequate x-ray photon count rate for the digital pulse processor. Data collection periods range between 200 and 300 seconds, with dead-times of less than 15%.
[0430] An aliquot of liquid sample solution is placed onto a AuPd sputtered glass slide followed by a dehydration step which includes freeze drying the solution or drying the solution under a dry nitrogen gas flow to yield particulates from the suspension. Due to the nature of the particulates, no secondary coating is required for either imaging or XEDS analysis.
[0431]
Transmission Electron Microscopy
[0432] Transmission Electron Microscopy was performed on raw materials corresponding to the components used to manufacture GR5 and GR8, as well as the solutions GR5 and GR8. Specifically, an additional run was performed corresponding to those production parameters associated with manufacturing AT031 (i.e, the silver constituent in GR5); an additional run was performed corresponding to those production parameters associated with manufacturing AT060 (i.e., the silver constituent in GR8); and an additional run was performed corresponding to those production parameters associated with manufacturing BT006 (i.e., the zinc constituent used in both GR5 and GR8). The components were then mixed together in a similar manner as discussed above herein to result in solutions equivalent to previously manufactured GR5 and GR8.
[0433]
[0434]
[0435]
[0436]
[0437]
[0438] The samples for each of the TEM photomicrographs were prepared at room temperature. Specifically, 4 microliters of each liquid sample were placed onto a holey carbon film which was located on top of filter paper (used to wick off excess liquid). The filter paper was moved to a dry spot and this procedure was repeated resulting in 8 total microliters of each liquid sample being contacted with one portion of the holey carbon film. The carbon film grids were then mounted in a single tilt holder and placed in the loadlock of the JEOL 2100 CryoTEM to pump for about 15 minutes. The sample was then introduced into the column and the TEM microscopy work performed.
[0439] The JEOL 2100 CryoTEM operated at 200 kv accelerating potential. Images were recorded on a Gatan digital camera of ultra high sensitivity. Typical conditions were 50 micron condenser aperture, spot size 2, and alpha 3.
[0440] These TEM photomicrographs show clearly that the average particle size of those particles in
[0441] TEM photomicrographs 43r do not show any significant crystallization of zinc.
[0442] TEM photomicrographs 43s (corresponding to solution GR5) also show similar silver features as shown in
[0443] Thus, these TEM photomicrographs suggest that the processing parameters utilized to manufacture GR5 resulted in somewhat smaller silver-based nanoparticles, when compared to those silver-based nanoparticles associated with GR8. The primary difference in production parameters between GR5 and GR8 was the location of the two adjustable plasmas 4 used to make the silver constituents in each solution. The zinc constituents in both of GR5 and GR8 are the same. However, the silver constituents in GR5 is made by adjustable plasmas 4 located at the First Electrode Set and the Fourth Electrode Set; whereas the silver constituent in GR8 is made by adjustable plasmas 4 located at the First and Second Electrode Sets.
UV-VIS Spectroscopy
[0444] Energy absorption spectra were obtained using US-VIS micro-spec-photometry. This information was acquired using dual beam scanning monochrometer systems capable of scanning the wavelength range of 190 nm to 1100 nm. Two UV-Vis spectrometers were used to collect absorption spectra; these were a Jasco V530 and a Jasco MSV350. Instrumentation was setup to support measurement of low-concentration liquid samples using one of a number of fuzed-quartz sample holders or cuvettes. The various cuvettes allow data to be collected at 10 mm, 1 mm or 0.1 mm optic path of sample. Data was acquired over the above wavelength range using both PMT and LED detectors with the following parameters; bandwidth of 2 nm, with data pitch of 0.5 nm, with and without a water baseline background. Both tungsten halogen and Hydrogen D2 energy sources were used as the primary energy sources. Optical paths of these spectrometers were setup to allow the energy beam to pass through the samples with focus towards the center of the sample cuvettes. Sample preparation was limited to filling and capping the cuvettes and then physically placing the samples into the cuvette holder, within the fully enclosed sample compartment. Optical absorption of energy by the materials of interest was determined. Data output was measured and displayed as Absorbance Units (per Beer-Lambert's Law) versus wavelength and frequency.
[0445] Spectral signatures in a UV-Visible range were obtained for each of the raw materials produced in Examples 1-5 as well as in each of the solutions GR1-GR10 shown in Tables 8 and 9.
[0446] Specifically,
[0447]
[0448]
[0449]
[0450]
[0451] The UV-Vis spectral data for each of
[0452] In general, UV-Vis spectroscopy is the measurement of the wavelength and intensity of absorption of near-ultraviolet and visible light by a sample. Ultraviolet and visible light are energetic enough to promote outer electrons to higher energy levels. UV-Vis spectroscopy can be applied to molecules and inorganic ions or complexes in solution.
[0453] The UV-Vis spectra have broad features that can be used for sample identification but are also useful for quantitative measurements. The concentration of an analyte in solution can be determined by measuring the absorbance at some wavelength and applying the Beer-Lambert Law.
[0454] The dual beam UV-Vis spectrophotometer was used to subtract any signals from the solvent (in this case water) in order to specifically characterize the samples of interest. In this case the reference is the feedstock water that has been drawn from the outlet of the Reverse Osmosis process discussed in the Examples section herein.
Raman Spectroscopy
[0455] Raman spectral signatures were obtained using a Renishaw Invia Spectrometer with relevant operating information shown in
[0456] The reflection micro-spectrograph with Leica DL DM microscope was fitted with either a 20 (NA=0.5) water immersion or a 5 (NA=0.12) dry lens. The rear aperture of each lens was sized to equal or exceed the expanded laser beam diameter. Two laser frequencies were used, these being a multiline 50 mW Argon laser at % power setup for 514.5 nm and a 20 mW HeNe laser at 633 nm. High resolution gratings were fitted in the monochrometer optic path which allowed continuous scans from 50 to 4000 wavenumbers (1/cm). Ten to 20 second integration times were used. Sample fluid was placed below the lens in a 50 ml beaker. Both lasers were used to investigate resonance bands, while the former laser was primarily used to obtain Raman spectra. Sample size was about 25 ml. Measurements made with the 5 dry lens were made with the objective positioned about 5 mm above the fluid to interrogate a volume about 7 mm beneath the water meniscus. Immersion measurements were made with the 20 immersion lens positioned about 4 mm into the sample allowing investigation of the same spatial volume. CCD detector acquisition areas were individually adjusted for each lens to maximize signal intensity and signal-to-noise ratios.
Biological Characterization
Bioscreen Results
[0457] A Bioscreen C microbiology reader was utilized to compare the effectiveness of the raw materials made in accordance with Examples 1-5, as well as the 10 solutions GR1-GR10 made therefrom. Specific procedure for obtaining Bioscreen results follows below.
Bacterial Strains
[0458] Escherichia coli was obtained from the American Type Culture Collection (ATCC) under the accession number 25922. The initial pellets were reconstituted in trypticase soy broth (TSB, Becton Dickinson and Company, Sparks, Md.) and aseptically transferred to a culture flask containing 10 ml of TSB followed by overnight incubation at 37 C. in a Forma 3157 water-jacketed incubator (Thermo Scientific, Waltham, Mass., USA).
Maintenance and Storage of Bacteria
[0459] Bacterial strains were kept on trypticase soy agar (TSA, Becton Dickinson and Company, Sparks, Md.) plates and aliquots were cryogenically stored at 80 C. in MicroBank tubes (Pro-Lab Incorporated, Ontario, Canada).
Preparation of Bacterial Cultures
[0460] Microbank tubes were thawed at room temperature and opened in a NuAire Labgard 440 biological class II safety cabinet (NuAire Inc., Plymouth, Minn., USA). Using a sterile inoculating needle, one microbank bead was aseptically transferred from the stock tube into 10 ml of either Trypticase Soy Broth (TSB, Becton Dickenson and Company, Sparks, Md.) for Bioscreen analysis or Mueller-Hinton Broth (MHB, Becton Dickinson and Company, Sparks, Md.) for MIC/MLC analysis. Overnight cultures of bacterial strains were grown at 37 C. for 18 hours in a Forma 3157 water-jacketed incubator (Thermo Scientific, Waltham, Mass., USA) and diluted to a 0.5 McFarland turbidity standard. Subsequently, a 10.sup.1 dilution of the McFarland standard was performed, to give an approximate bacterial count of 1.010.sup.7 CFU/ml. This final dilution must be used within 30 minutes of creation to prevent an increase in bacterial density due to cellular growth.
Dilution of Nanoparticle Solutions
[0461] Nanoparticle solutions were diluted in MHB and sterile dH.sub.2O to a 2 testing concentration yielding a total volume of 1.5 ml. Of this volume, 750 l consisted of MHB, while the other 750 l consisted of varying amounts of sterile dH.sub.2O and the nanoparticle solution to make a 2 concentration of the particular nanoparticle solution being tested. Testing dilutions (final concentration in reaction) ranged from 0.5 ppm Ag to 6.0 ppm Ag nanoparticle concentration with testing performed at every 0.5 ppm interval.
Preparation of Bioscreen Reaction
[0462] To determine the minimum inhibitory concentration (MIC) of nanoparticle solutions, 100 l of the diluted bacterial culture was added to 100 l of a particular nanoparticle solution at the desired testing concentration in the separate, sterile wells of a 100 well microtiter plate (Growth Curves USA, Piscataway, N.J., USA). Wells inoculated with both 100 l of the diluted bacterial culture and 100 l of a 1:1 MHB/sterile ddH.sub.2O mix served as positive controls, while wells with 100 l of MHB and 100 l of a 1:1 MHB/sterile ddH.sub.2O mix served as negative controls for the reaction. Plates were placed inside the tray of a Bioscreen C Microbiology Reader (Growth Curves USA, Piscataway, N.J., USA) and incubated at a constant 37 C. for 15 hours with optical density (O.D.) measurements being taken every 10 minutes. Before each O.D. measurement, plates were automatically shaken for 10 seconds at medium intensity to prevent settling of bacteria and to ensure a homogenous reaction well.
Determination of Both MIC and MLC
[0463] All data was collected using EZExperiment Software (Growth Curves USA, Piscataway, N.J., USA) and analyzed using Microsoft Excel (Microsoft Corporation, Redmond, Wash., USA). The growth curves of bacteria strains treated with different nanoparticle solutions were constructed and the MIC determined. The MIC was defined as the lowest concentration of nanoparticle solution that prevented the growth of the bacterial culture for 15 hours, as measured by optical density using the Bioscreen C Microbiology Reader.
[0464] Once the MIC was determined, the test medium from the MIC and subsequent higher concentrations was removed from each well and combined according to concentration in appropriately labeled, sterile Eppendorf tubes. TSA plates were inoculated with 100 l of test medium and incubated overnight at 37 C. in a Forma 3157 water-jacketed incubator (Thermo Scientific, Waltham, Mass., USA). The minimum lethal concentration (MLC) was defined as the lowest concentration of nanoparticle solution that prevented the growth of the bacterial culture as measured by colony growth on TSA.
[0465] The results of the Bioscreen runs are shown in
[0466] In contrast, each of the solutions GR1-GR10 showed superior performance, relative to each of the raw materials AT031, AT060 and AT059. Interestingly, the combination of the raw materials associated with silver nanoparticles with those raw materials associated with both zinc and copper nanoparticles produced unexpected synergistic results.
[0467] Additional Bioscreen results are shown in
[0468] GZA raw material was made in a manner similar to the BT-006 raw material except that a platinum electrode 1/5 configuration was utilized rather than zinc.
Freeze-Drying
[0469]
[0470] Freeze-drying was accomplished by placing the GR5 and GR8 solution in a plastic (nalgene) container and placing the plastic container in a BenchTop 2K freeze dryer (manufactured by Virtis) which was maintained at a temperature of about 52 C. and a vacuum of less than 100 mililiter. About 10-20 ml of solution will freeze-dry overnight.
[0471] As is shown in
Viability/Cytoxicity Testing of Mammalian Cells
[0472] The following procedures were utilized to obtain cell viability and/or cytotoxicity measurements.
Cell Lines
[0473] Mus musculus (mouse) liver epithelial cells (accession number CRL-1638) and Sus scrofa domesticus (minipig) kidney fibroblast cells (accession number CCL-166) were obtained from the American Type Culture Collection (ATCC).
Cell Culturing from Frozen Stocks
[0474] Cell lines were thawed by gentle agitation in a Napco 203 water bath (Thermo Scientific, Waltham, Mass., USA) at 37 C. for 2 minutes. To reduce microbial contamination, the cap and O-ring of the frozen culture vial were kept above the water level during thawing. As soon as the contents of the culture vial were thawed, the vial was removed from the water, sprayed with 95% ethanol, and transferred into a NuAire Labgard 440 biological class II safety cabinet (NuAire Inc., Plymouth, Minn., USA). The vial contents were then transferred to a sterile 75 cm.sup.2 tissue culture flask (Corning Life Sciences, Lowell, Mass., USA) and diluted with the recommended amount of complete culture medium. Murine liver epithelial cell line CRL-1638 required propagation in complete culture media composed of 90% Dulbecco's Modified Eagle's Medium (ATCC, Manassas, Va., USA) and 10% fetal bovine serum (ATCC, Manassas, Va., USA), while minipig kidney fibroblast cell line CCL-166 was grown in complete culture media comprised of 80% Dulbecco's Modified Eagle's Medium and 20% fetal bovine serum. Cell line CRL-1638 was diluted with growth media in a 1:15 ratio, while cell line CCL-166 was diluted with growth media in a 1:10 ratio. The culture flasks were then incubated at about 37 C., utilizing a 5% CO.sub.2 and 95% humidified atmosphere in a NuAire, IR Autoflow water-jacketed, CO.sub.2 incubator (NuAire Inc., Plymouth, Minn., USA).
Medium Renewal and Care of Growing Cells
[0475] Every two days, old growth medium was removed from culturing flasks and replaced with fresh growth medium. Each day, observations for microbial growth, such as fungal colonies and turbidity in medium, were made with the naked eye. Additionally, cultured cells were observed under an inverted phase contrast microscope (VWR Vistavision, VWR International, and West Chester, Pa., USA) to check for both general health of the cells and cell confluency.
Subculturing of Cells
[0476] Once cells reached approximately 80% confluent growth, cells were deemed ready for subculturing. Old growth medium was removed and discarded and the cell sheet rinsed with 5 ml of prewarmed trypsin-EDTA dissociating solution (ATCC, Manassas, Va., USA). After 30 seconds of contact with the cell sheet, the trypsin-EDTA was removed and discarded. Ensuring that both the entire cell monolayer was covered and the flask was not agitated, a 3 ml volume of the prewarmed trypsin-EDTA solution was added to the cell sheet followed by incubation of the culture flask at 37 C. for about 15 minutes. After cell dissociation, trypsin-EDTA was inactivated by adding about 6 ml of complete growth medium to the cell culture flask followed by gentle pipetting to aspirate cells.
[0477] In order to count cells, 200 l of the cell suspension was collected in a 15 ml centrifuge tube (Corning Life Sciences, Lowell, Mass., USA). Both 300 L of phosphate buffered saline (ATCC, Manassas, Va., USA) and 500 L of a 0.4% trypan blue solution (ATCC, Manassas, Va., USA) was added to the collected cell suspension and mixed thoroughly. After allowing to stand for about 15 minutes, 10 l of the mixture was placed in each chamber of an iN Cyto, C-Chip disposable hemacytometer (INCYTO, Seoul, Korea) where the cells were counted with a VWR Vistavision inverted phase contrast microscope (VWR International, West Chester, Pa., USA) according to the manufacturer's instructions. The concentration of the cells in the suspension was calculated using a conversion formula based upon the cell count obtained from the hemacytometer.
Cytotoxicity Testing
[0478] The wells of black, clear bottom, cell culture-treated microtiter plates (Corning Life Sciences, Lowell, Mass., USA) were seeded with 200 l of culture medium containing approximately 1.710.sup.4 cells as shown in
TABLE-US-00010 TABLE 10 Microwell plate setup for cytotoxicity testing. All outer wells of the plate contained only 200 l of culture medium (no cells) to act as a blank vehicle control (VCb) for the experiment. As a positive vehicle control, wells 2B-2G (VC1) and wells 11B-11G (VC2) were seeded with both culture medium and cells. One solution was tested on each plate (H.sub.x). The highest concentration of solution was placed in wells 3B-3D (C.sub.1) while seven, 20% dilutions (C.sub.2-C.sub.7) of each solution were present in each consecutive well. 1 2 3 4 5 6 7 8 9 10 11 12 A VCb VCb VCb VCb VCb VCb VCb VCb VCb VCb VCb VCb B VCb VC1 H.sub.1C.sub.1 H.sub.1C.sub.2 H.sub.1C.sub.3 H.sub.1C.sub.4 H.sub.1C.sub.5 H.sub.1C.sub.6 H.sub.1C.sub.7 H.sub.1C.sub.8 VC2 VCb C VCb VC1 H.sub.1C.sub.1 H.sub.1C.sub.2 H.sub.1C.sub.3 H.sub.1C.sub.4 H.sub.1C.sub.5 H.sub.1C.sub.6 H.sub.1C.sub.7 H.sub.1C.sub.8 VC2 VCb D VCb VC1 H.sub.1C.sub.1 H.sub.1C.sub.2 H.sub.1C.sub.3 H.sub.1C.sub.4 H.sub.1C.sub.5 H.sub.1C.sub.6 H.sub.1C.sub.7 H.sub.1C.sub.8 VC2 VCb E VCb VC1 C C C C C C C C VC2 VCb F VCb VC1 C C C C C C C C VC2 VCb G VCb VC1 C C C C C C C C VC2 VCb H VCb VCb VCb VCb VCb VCb VCb VCb VCb VCb VCb VCb
[0479] Microtiter plates were incubated with the treatment compounds 37 C., utilizing a 5% CO.sub.2 and 95% humidified atmosphere for 24 hours. After incubation with nanoparticle solutions, the culture medium was removed and discarded from each well and replaced with 100 l of fresh media containing Alamar Blue (Biosource International, Camarillo, Calif., USA) at a concentration of 50 l dye/ml media. Plates were gently shaken by hand for about 10 seconds and incubated at about 37 C., utilizing a 5% CO.sub.2 and 95% humidified atmosphere for 2.5 hours. Fluorescence was then measured in each well utilizing an excitation wavelength of 544 nm and an emission wavelength of 590 nm. Fluorescence measurements were carried out on the Fluoroskan II fluorometer produced by Labsystems (Thermo Scientific, Waltham, Mass., USA).
Data Analysis
[0480] Cytotoxicity of the nanoparticle solutions was determined by measuring the proportion of viable cells after treatment when compared to the non-treated control cells. A percent viability of cells after treatment was then calculated and used to generate the concentration of nanoparticle at which fifty percent of cellular death occurred (LC.sub.50). All data was analyzed using GraphPad Prism software (GraphPad Software Inc., San Diego, Calif., USA).
[0481] Results of the viability/cytotoxicity tests are shown in
[0482] With regard to
[0483] Similarly,
[0484] In each of
[0485]
[0486] With regard to
Example 6
Manufacturing Silver-based Nanoparticles/Nanoparticle Solutions AT098, AT099 and AT100 Without the Use of Any Plasmas
[0487] This Example utilizes the same basic apparatus used to make the solutions of Examples 1-5. However, this Example does not utilize any electrode(s) 1. This Example utilizes.sup.990.95% pure silver electrodes for each electrode 5. Tables 11a, 11b and 11c summarize portions of electrode design, configuration, location and operating voltages. As shown in Tables 11a, 11b and 11c, the target voltages were set to a low of about 2,750 volts in Electrode Set #8 and to a high of about 4,500 volts in Electrode Sets #1-3. The high of 4,500 volts essentially corresponds to an open circuit which is due to the minimal conductivity of the liquid 3 between each electrode 5, 5 in Electrode Sets #1-3
[0488] Further, bar charts of the actual and target voltages for each electrode in each electrode set, are shown in
TABLE-US-00011 TABLE 11a Run ID: AT098 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 5a 4.54 N/A 4.54 5a 4.52 N/A 4.51 65/1651** N/A N/A N/A N/A N/A N/A N/A Output Water 24 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00012 TABLE 11b Run ID: AT099 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 5a 4.54 N/A 4.53 5a 4.52 N/A 4.49 8/203.2 2 5b 4.55 N/A 4.56 5a 4.51 N/A 4.52 57/1447.8** N/A N/A N/A N/A N/A N/A Output Water 24 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00013 TABLE 11c Run ID: AT100 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 5a 4.53 N/A 4.53 5a 4.49 N/A 4.49 8/203.2 2 5b 4.51 N/A 4.51 5b 4.48 N/A 4.47 8/203.2 3 5c 4.52 N/A 4.52 5c 4.45 N/A 4.45 8/203.2 4 5d 4.40 N/A 4.40 5d 4.32 N/A 4.32 9/228.6 5 5e 4.38 N/A 4.37 5e 4.27 N/A 4.26 8/203.2 6 5f 3.85 N/A 3.80 5f 3.71 N/A 3.65 8/203.2 7 5g 3.55 N/A 3.43 5g 3.30 N/A 3.23 8/203.2 8 5h 2.79 N/A 2.76 5h 2.75 N/A 2.69 8/203.2** Output Water 82 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0489] Atomic Absorption Spectroscopy (AAS) samples were prepared and measurement values were obtained. Slight process modifications were incorporated into those AAS procedures discussed earlier herein. These process changes are incorporated immediately below.
[0490] The AAS values were obtained from a Perkin Elmer AAnalyst 300 Spectrometer system, as in Examples 1-5. The samples manufactured in accordance with Examples 6-12 were prepared by adding a small amount of nitric acid or hydrochloric acid (usually 2-4% of final volume) and then dilution to a desirable characteristic concentration range or linear range of the specific element to improve accuracy of the result. The desirable range is an order of magnitude estimate based on production parameters established during product development. For pure metals analysis, a known amount of feedstock material is digested in a known amount of acid and diluted to ensure that the signal strength of the absorbance will be within the tolerance limits and more specifically the most accurate range of the detector settings, better known as the linear range.
[0491] The specific operating procedure for the Perkin Elmer AAnalyst 300 system is as follows:
I) Principle
[0492] The Perkin Elmer AAnalyst 300 system consists of a high efficiency burner system with either a sapphire GemTip or stainless steel beaded nebulizer and an atomic absorption spectrometer. The burner system provides the thermal energy necessary to dissociate the chemical compounds, providing free analyte atoms so that atomic absorption occurs. The spectrometer measures the amount of light absorbed at a specific wavelength using a hollow cathode lamp as the primary light source, a monochromator and a detector. A deuterium arc lamp corrects for background absorbance caused by non-atomic species in the atom cloud.
II) Instrument Setup
[0493] A) Empty waste container to mark. Add deionized water to drain tubing to ensure that water is present in the drain system float assembly. [0494] B) Ensure that the appropriate Hollow Cathode Lamp for the analyte to be analyzed is properly installed in the turret. [0495] C) Power AAnalyst 300 and computer ON. [0496] D) After the AAnalyst 300 has warmed up for a minimum of 30 minutes, start the AAWin Analyst software [0497] E) Recall Method to be analyzed. [0498] F) Ensure that the correct Default Conditions are entered. [0499] G) Align the Hollow Cathode Lamp. [0500] 1) Allow HCL's to warm and stabilize for a minimum of 15 minutes. [0501] 2) Check that a proper peak and energy level has been established for the specific lamp. [0502] 3) Adjust the power and frequency of the lamp settings to obtain maximum energy. [0503] H) Store Method changes in Parameter Entry, Option, Store and #. [0504] I) Adjust Burner height. [0505] 1) Place a white sheet of paper behind the burner to confirm the location of the light beam. [0506] 2) Lower the burner head below the light beam with the vertical adjustment knob. [0507] 3) Press Cont (Continuous) to display an absorbance value. [0508] 4) Press A/Z to Autozero. [0509] 5) Raise the burner head with the vertical adjustment knob until the display indicates a slight absorbance (0.002). Slowly lower the head until the display returns to zero. [0510] Lower the head an additional quarter turn to complete the adjustment. [0511] J) Ignite flame. [0512] 1) Open air compressor valve. Set pressure to 50 to 65 psi. [0513] 2) Open acetylene gas cylinder valve. Set output pressure to 12 to 14 psi. Replace cylinder when pressure falls to 75 psi to prevent valve and tubing damage from the presence of acetone. [0514] 3) Press Gases On/Off. Adjust oxidant flow to 4 Units. [0515] 4) Press Gases On/Off. Adjust acetylene gas flow to 2 Units. [0516] 5) Press Flame On/Offto turn flame on. [0517] Note: Do not directly view the lamp or flame without protective ultraviolet radiation eyewear. [0518] K) Aspirate deionized water through the burner head to fully warm the burner head for 3 to 5 minutes. [0519] L) Adjust Burner Position and Nebulizer. [0520] 1) Aspirate a standard with a signal of approximately 0.2-0.5 absorbance units. [0521] 2) Obtain maximum burner position absorbance by rotating the horizontal, vertical and rotational adjustment knobs. [0522] 3) Loosen the nebulizer locking ring by turning it clockwise. Slowly turn the nebulizer adjustment knob to obtain maximum absorbance. Lock the knob in place with the locking ring. [0523] Note: An element, such as Silver, which is at a wavelength where gases do not absorb is optimal for adjusting the Burner and Nebulizer.
III) Calibration Procedure
[0524] A) Calibrate with standards that bracket the sample concentrations. [0525] B) WinAA Analyst software will automatically create a calibration curve for your sample readings. But check to ensure that proper absorption is established with each calibration standard. [0526] C) Enter Standard Concentration Values in the Default Conditions to calculate an AAnalyst 300 standard curve. [0527] 1) Enter the concentration of the lowest standard for STD1 using significant digits. [0528] 2) Enter the concentrations of the other standards of the calibration curve in ascending order and the concentration of the reslope standard. [0529] 3) Autozero with the blank before acquiring calibration values. [0530] 4) Aspirate Standard 1, press 0 Calibrate to clear the previous curve. Aspirate the standards in numerical order. [0531] Press standard number and calibrate for each standard. [0532] 5) Press Print to print the graph and correlation coefficient. [0533] 6) Rerun one or all standards, if necessary. To rerun Standard 3, aspirate standard and press 3 Calibrate. [0534] D) The correlation coefficient should be greater than or equal to 0.990. [0535] E) Check the calibration curve for drift, accuracy and precision with calibration standards continuously during operation, at minimum, one every 20 samples.
IV) Analysis Procedure
[0536] A) Samples are measured in triplicate using a minimum of 3 replicates per sample. [0537] B) Aspirate sample and press Read Sample. The software will take 3 readings of absorbance and then average those readings. Wait until software says idle. Rerun the sample if the standard deviation is greater than 50% of the sample result.
V) Instrument Shutdown
[0538] A) Aspirate 2% Nitric Acid (HNO.sub.3) for 1-3 minutes and deionized water for 3-5 minutes to clean the burner head. Remove the capillary tube from the water and run burner-head dry for about 1 minute. [0539] B) Press Flame On/Off to turn off flame. [0540] C) Close air compressor valve. [0541] D) Close acetylene cylinder valve. [0542] E) Press Bleed Gases to bleed the acetylene gas from the lines. The cylinder pressure should drop to zero. [0543] F) Exit the software, power OFF the AAnalyst 300, and shut down the computer.
TABLE-US-00014 TABLE 11d Run ID Electrode Configuration Measured PPM AT098 0XXXXXXX Below Detectable Limit AT099 00XXXXXX Less Than 0.2 PPM AT100 00000000 7.1 PPM
[0544] Table id shows the results obtained from Example 6. Table 11d contains a column entitled Electrode Configuration. This column contains characters 0 and X. The character 0 corresponds to one electrode set 5, 5. The character X represents that no electrodes were present. Thus, for Run ID AT098, only a single electrode set 5a, 5a was utilized. No detectable amount of silver was measurable by the AAS techniques disclosed herein. Run ID AT099 utilized two electrode sets 5a, 5a and 5b, 5b. The AAS techniques detected some amount of silver as being present, but that amount was less than 0.2 ppm. Run ID AT100 utilized eight electrode sets, 5, 5. This configuration resulted in a measured ppm of 7.1 ppm. Accordingly, it is possible to obtain metallic-based constituents (e.g., metallic-based nanoparticles/nanoparticle solution) without the use of an electrode 1 (and an associated adjustable plasma 4). However, the rate of formation of metallic-based constituents is much less than that rate obtained by using one or more plasmas 4. For example, Examples 1-3 disclosed silver-based products associated with Run ID's AT031, AT036 and AT038. Each of those Run ID's utilized two electrode sets that included adjustable plasmas 4. The measured silver ppm for each of these samples was greater than 40 ppm, which is 5-6 times more than what was measured in the product made according to Run ID AT100 in this Example 6. Thus, while it is possible to manufacture metallic-based constituents without the use of at least one adjustable plasma 4 (according to the teachings herein) the rates of formation of metallic based constituents are greatly reduced when no plasmas 4 are utilized as part of the production techniques.
[0545] Accordingly, even though eight electrode sets 5, 5 were utilized to make the product associated with Run AT100, the lack of any electrode sets including at least one electrode 1 (i.e., the lack of plasma 4), severely limited the ppm content of silver in the solution produced.
Example 7
Manufacturing Silver-based Nanoparticles/Nanoparticle Solutions AT080, AT081, AT082, AT083, AT084, AT085, AT086 and AT097 Using Only a Single Plasma
[0546] This Example utilizes the same basic apparatus used to make the solutions of Examples 1-5, however, this Example uses only a single plasma 4. Specifically, for Electrode Set #1, this Example uses a 1a, 5a electrode configuration. Subsequent Electrode Sets #2-#8 are sequentially added. Each of Electrode Sets #2-#8 have a 5, 5 electrode configuration. This Example also utilizes 99.95% pure silver electrodes for each of electrodes 1 and 5 in each Electrode Set.
[0547] Tables 12a-12h summarize portions of electrode design, configuration, location and operating voltages. As shown in Tables 12a-12h, the target voltages were set to a low of about 900 volts (at Electrode Set #8) and a high of about 2,300 volts (at Electrode Set #1).
[0548] Further, bar charts of the actual and target voltages for each electrode in each electrode set, are shown in
TABLE-US-00015 TABLE 12a Run ID: AT097 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 1a 1.78 .26/6.8 1.79 5a 1.82 N/A 1.79 65/1651** N/A N/A N/A N/A N/A N/A N/A Output Water 35 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00016 TABLE 12b Run ID: AT086 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 1a 2.18 .26/6.8 2.15 5a 1.63 N/A 1.67 8/203.2 2 5b 1.05 N/A 1.05 5b 1.39 N/A 1.43 57/1447.8** N/A N/A N/A N/A N/A N/A Output Water 38 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00017 TABLE 12c Run ID: AT085 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 1a 2.24 .26/6.8 2.19 5a 1.79 N/A 1.79 8/203.2 2 5b 1.16 N/A 1.16 5b 1.24 N/A 1.23 8/203.2 3 5c 1.12 N/A 1.14 5c 1.34 N/A 1.35 49/1244.6** N/A N/A N/A N/A N/A Output Water 43 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00018 TABLE 12d Run ID: AT084 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 1a 2.29 .26/6.8 2.25 5a 1.95 N/A 1.94 8/203.2 2 5b 1.27 N/A 1.26 5b 1.39 N/A 1.39 8/203.2 3 5c 1.35 N/A 1.34 5c 1.26 N/A 1.25 8/203.2 4 5d 1.31 N/A 1.32 5d 1.59 N/A 1.56 41/1041.4** N/A N/A N/A N/A Output Water 49 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00019 TABLE 12e Run ID: AT083 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 1a 2.17 .26/6.8 2.16 5a 1.72 N/A 1.74 8/203.2 2 5b 1.10 N/A 1.12 5b 1.32 N/A 1.34 8/203.2 3 5c 1.25 N/A 1.24 5c 1.12 N/A 1.13 8/203.2 4 5d 1.31 N/A 1.29 5d 1.32 N/A 1.33 9/228.6 5 5e 1.63 N/A 1.64 5e 1.52 N/A 1.52 32/812.8** N/A N/A N/A Output Water 56 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00020 TABLE 12f Run ID: AT082 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 1a 2.18 .26/6.8 2.17 5a 1.76 N/A 1.75 8/203.2 2 5b 1.08 N/A 1.09 5b 1.31 N/A 1.32 8/203.2 3 5c 1.26 N/A 1.26 5c 1.09 N/A 1.08 8/203.2 4 5d 1.28 N/A 1.27 5d 1.25 N/A 1.22 9/228.6 5 5e 1.60 N/A 1.60 5e 1.17 N/A 1.17 8/203.2 6 5f 0.99 N/A 0.98 5f 1.19 N/A 1.18 24/609.6** N/A N/A Output Water 63 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00021 TABLE 12g Run ID: AT081 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 1a 2.23 .26/6.8 2.18 5a 1.77 N/A 1.79 8/203.2 2 5b 1.09 N/A 1.09 5b 1.30 N/A 1.28 8/203.2 3 5c 1.22 N/A 1.21 5c 1.07 N/A 1.07 8/203.2 4 5d 1.27 N/A 1.27 5d 1.21 N/A 1.21 9/228.6 5 5e 1.60 N/A 1.58 5e 1.26 N/A 1.23 8/203.2 6 5f 1.10 N/A 1.09 5f 1.02 N/A 0.99 8/203.2 7 5g 1.14 N/A 1.11 5g 1.34 N/A 1.32 16/406.4** N/A Output Water 72 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00022 TABLE 12h Run ID: AT080 Flow Rate: 200 ml/min Target Distance Distance Average Electrode Voltage c-c x Voltage Set # # (kV) in/mm in/mm (kV) 7/177.8* 1 1a 2.11 .26/6.8 2.13 5a 1.72 N/A 1.73 8/203.2 2 5b 1.00 N/A 1.00 5b 1.23 N/A 1.24 8/203.2 3 5c 1.16 N/A 1.16 5c 0.97 N/A 0.98 8/203.2 4 5d 1.15 N/A 1.17 5d 1.14 N/A 1.14 9/228.6 5 5e 1.47 N/A 1.49 5e 1.16 N/A 1.16 8/203.2 6 5f 1.02 N/A 1.02 5f 0.98 N/A 0.98 8/203.2 7 5g 1.06 N/A 1.07 5g 0.94 N/A 0.96 8/203.2 8 5h 0.92 0.93 5h 1.12 1.14 8/203.2** Output Water 82 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0549] Atomic Absorption Spectroscopy (AAS) samples were prepared and measurement values were obtained, as discussed in Example 6. Table 12i shows the results. Note that Table 12i includes a column entitled Electrode Configuration. This column contains characters of 1 and 0 and X. The l's represent an electrode configuration corresponding to Electrode Set #1 (i.e., a 1, 5 combination). The 0's represent an electrode combination of 5, 5. The character X represents that no electrodes were present. Thus, for example, AT084 is represented by 1000XXXX which means a four electrode set combination was used to make AT084 and the combination corresponded to Set #1=1, 5, Set #2=5, 5; Set #3=5, 5 and Set #4=5, 5 (there were no Sets after Set #4, as represented by XXXX).
TABLE-US-00023 TABLE 12i Average Particle Electrode Measured Ag Measured Ag Size Diameter Run ID Configuration PPM (initial) PPM (10 days) Range (Initial) AT097 1XXXXXXX 6.5 6.5 2 nm AT086 10XXXXXX 14.9 13.4 3-7 nm AT085 100XXXXX 19.2 18.4 3-8 nm AT084 1000XXXX 24.1 22.9 4-8 nm AT083 10000XXX 30.4 28.1 6-15 nm AT082 100000XX 34.2 27.4 20-100 nm AT081 1000000X 36.7 29.3 40-120 nm AT080 10000000 40.9 31.6 40-150 nm
[0550] Table 12i includes a column entitled Measured Ag PPM (initial). This column corresponds to the silver content of each of the eight solutions measured within one hour of its production. As shown, the measured ppm increases with each added Electrode Set, wherein the Run AT080 produces a ppm level for silver comparable in amount to Run ID AT031 of Example 3. However, another column entitled, Measured Ag PPM (10 days) shows data which tells another story. Specifically, the initial and 10 day PPM measurements are essentially the same (e.g., within operation error of the AAS) for samples corresponding to Run Id's AT097, AT086, AT085, AT084 and AT083. This means that essentially no significant settling of the constituent particles found in five of the eight runs occurred. However, once samples associated with Run ID AT082, AT081 and AT080 were examined after 10 days, a significant portion of the constituent particles had settled, with samples taken from Run AT080 losing about 10 ppm out of 40 ppm due to particulate settling.
[0551] In order to obtain an idea of what particle sizes were being produced in each of the eight samples associated with this Example 7, a dynamic light scattering (DLS) approach was utilized. Specifically, dynamic light scattering methods utilizing variations of scattered light intensities from an LED laser were measured over time to determine any changes in intensity from particle motion due to Brownian Motion. The instrument used to perform these measurements was a VISCOTEK 802 DLS with Dual Alternating Technology (D.A.T.).
[0552] All measurements were made using a 12 L quartz cell, which was placed into a temperature controlled cell block. One 827.4 nm laser beam was passed through the solution to be measured. Scattering intensities were measured using a CCD detector with an optical view path mounted transversely to that of the laser. Experimental data was then mathematically transformed using variation of Einstein-Stokes and Rayleigh equations to derive values representative of particle size and distribution information. Data collection and math transforms were performed using Viscotek Omnisize version 3,0,0,291 software. This instrument hardware and software reliably provides measurements for particles with a radius from 0.8 nm to 2 m.
[0553] This technique works best when the solution is free of micro-bubbles and particles subject to Stokes settling motion (some of which was clearly occurring in at least three of the samples in this Example 7). All vessels used to contain and prepare materials to be tested were rinsed and blow-dried to remove any debris. All water used to prepare vessels and samples was doubly de-ionized and 0.2 m filtered. If solvent is needed, use only spectrographic grade isopropyl alcohol. All were rinsed with clean water after solvent exposure, and wiped only with clean lint-free cotton cloth.
[0554] An aliquot of solution sample, about 3 ml in total volume, was drawn into a small syringe and then dispensed into a clean about 4 dram glass sample vial. Two (2) syringe filters (0.45 m) were fixed onto the syringe during this operation to doubly filter the sample, thus removing any large particles not intended as part of the solution. This sample was placed into a small vacuum chamber, where it was subjected to a 1 minute exposure to a low-level vacuum (<29.5 inches Hg) to boil the suspension, removing suspended micro-bubbles. The vacuum was drawn through a small dual-stage rotary vacuum pump such as a Varian SD-40. Using a glass Tuberculin syringe with a 20 gage or smaller blunted needle, sample was withdrawn to fill the syringe and then rinsed, then placed into the 12 L sample cell/cuvette. Additional like-type syringes were used to withdraw used sample and rinse fluids from this cell. The filled cuvette was inspected for obvious entrapped bubbles within the optical path.
[0555] This cell was inserted into the holder located in the VISCOTEK 802 DLS. Prior to this step, the instrument was allowed to fully warm to operating temperature for about 30 minutes and operating OmniSIZE software loaded in the controlling computer. This software will communicate and set-up the instrument to manufacturer prescribed conditions. Select a new measurement. Validate that the correct sample measurement parameters are selected, i.e.; temperature of 40 C., Target laser attenuation value of 300 k counts per second, 3 second measurement duration, water as the solvent, spike and drift respectively at 20% and 15%. Correct if needed. Then select Tools-Options from the controlling menu bar. Insure proper options are annotated; i.e. resolution at 200, ignore first 2 data points, peak reporting threshold of 0 and 256 correlator channels.
[0556] Once the sample was placed into the holder, the cover lid was securely closed causing the laser shutter to open. The sample was allowed to temperature stabilize for 5 to 10 minutes. On the menu tools bar, Auto-Attenuate was selected to cause the adjustment of laser power to fit the measurement requirements. Once the instrument and sample was set-up, the scatter intensity graphic display was observed. Patterns should appear uniform with minimal random spikes due to entrained nano/micro-bubbles or settling large particles.
[0557] A measurement was then performed. The developing correlation curve was also observed. This curve should display a shape as an inverted S and not spike out-of-limits. If the set-up was correct, parameters were adjusted to collect 100 measurements and run was then selected. The instrument auto-collected data and discarded correlation curves, not exhibiting Brownian motion behavior. At measurement series completion, retained correlation curves were inspected. All should exhibit expected shape and displayed between 30% and 90% expected motion behaviors. At this point, collected data was saved and software calculated particle size information. The measurement was repeated to demonstrate reproducibility. Resultant graphic displays were then inspected. Residuals should appear randomly dispersed and data measurement point must follow calculated theoretical correlation curve. The graphic distribution display was limited to 0.8 nm to 2 m. The Intensity Distribution and Mass Distribution histograms were reviewed to find particle sizes and relative proportions of each, present in the suspension. All information was then recorded and documented.
[0558]
[0559] In an effort to understand further the particles produced as a function of the different electrode combinations set forth in the Example 7, SEM photomicrographs of similar magnification were taken of each dried solution corresponding to each of the eight solutions made in this Example. These SEM photomicrographs are shown in
[0560] It should be noted that samples were prepared for the SEM by allowing a small amount of each solution produced to air dry on a glass slide. Accordingly, it is possible that some crystal growth may have occurred during drying. However, the amount of growth shown in each of samples AT082-AT080 is more than could possibly have occurred during drying alone. It is clear from the SEM photomicrographs that cubic-shaped crystals are evident in AT082, AT081 and AT080. In fact, nearly perfect cubic-shaped crystals are shown in
[0561] Accordingly, without wishing to be bound by any particular theory or explanation, when comparing the results of Example 7 with Example 6, it becomes clear that the creation of the plasma 4 has a profound impact on this inventive process. Moreover, once the plasma 4 is established, conditions favor the production of metallic-based constituents, including silver-based nanoparticles, including the apparent growth of particles as a function of each new electrode set 5, 5 provided sequentially along the trough member 30. However, if the goal of the process is to maintain the suspension of metallic-based nanoparticles in solution, then, under the process conditions of this Example 7, some of the particles produced begin to settle out near the last three Electrode Sets (i.e., Run Id's AT082, AT081 and AT080). However, if the goal of the process is to achieve particulate matter settling, then that goal can be achieved by following the configurations in Runs AT082, AT081 and AT080.
[0562] UV-Vis spectra were obtained for each of the settled mixtures AT097-AT080. Specifically, UV-Vis spectra were obtained as discussed above herein (see the discussion in the section entitled, Characterization of Materials of Examples 1-5 and Mixtures Thereof).
[0563] UV-Vis spectra for these same eight samples are also shown in
[0564] In an effort to determine efficacy against an E. coli bacteria (discussed in greater detail earlier herein), each of the eight solutions made according to this Example 7 were all diluted to the exact same ppm for silver in order to compare their relative efficacies in a normalized approach. In this regard, the normalization procedure was, for each of the samples, based on the ppm measurements taken after ten days of settling. Accordingly, for example, samples made according to Run AT080 were diluted from 31.6 ppm down to 4 ppm; whereas the samples associated with Run AT083 were diluted from 28.1 ppm, down to 4 ppm. These samples were then further diluted to permit Bioscreen measurements to be performed, as discussed above herein.
[0565]
Example 8
Manufacturing Silver-Based Nanoparticles/Nanoparticle Solutions AT089, AT090 and AT091 Using One or Two Plasmas
[0566] This Example utilizes the same basic apparatus used to make the solutions of Examples 1-5, however, this Example uses only a single plasma 4 to make AT090 (i.e., similar to AT080); two plasmas 4 to make AT091 (i.e., similar to AT031); and two plasmas 4 to make AT089 (first time run), wherein Electrode Set #1 and Electrode Set #8 both utilize plasmas 4. This Example also utilizes 99.95% pure silver electrodes for each of electrodes 1 and 5 in each Electrode Set.
[0567] Tables 13a, 13b and 13c summarize portions of electrode design, configuration, location and operating voltages. As shown in Tables 13a-13c, the target voltages were on average highest associated with AT089 and lowest associated with AT091.
[0568] Further, bar charts of the actual and target voltages for each electrode in each electrode set, are shown in
TABLE-US-00024 TABLE 13a Run ID: AT090 Flow 200 ml/min Rate: Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.03 7/177.8* 0.22/5.59 2.09 5a 1.62 N/A 1.69 2 5b 0.87 8/203.2 N/A 0.94 5b 1.08 N/A 1.11 3 5c 1.04 8/203.2 N/A 1.10 5c 0.94 N/A 0.97 4 5d 1.23 8/203.2 N/A 1.26 5d 1.24 N/A 1.30 5 5e 1.42 9/228.6 N/A 1.47 5e 1.11 N/A 1.12 6 5f 1.03 8/203.2 N/A 1.01 5f 1.01 N/A 1.03 7 5g 1.15 8/203.2 N/A 1.13 5g 0.94 N/A 1.02 8 5h 0.81 8/203.2 N/A 1.04 5h 1.03 N/A 1.14 8/203.2** Output Water 85 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00025 TABLE 13b Run ID: AT091 Flow 200 ml/min Rate: Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.04 7/177.8* 0.22/5.59 2.04 5a 1.67 N/A 1.66 2 5b 0.94 8/203.2 N/A 0.93 5b 1.11 N/A 1.10 3 5c 1.01 8/203.2 N/A 0.98 5c 1.07 N/A 1.05 4 1d 1.44 8/203.2 0.19/4.83 1.41 5d 1.12 N/A 1.11 5 5e 1.09 9/228.6 N/A 1.07 5e 0.56 N/A 0.55 6 5f 0.72 8/203.2 N/A 0.71 5f 0.72 N/A 0.70 7 5g 0.79 8/203.2 N/A 0.81 5g 0.73 N/A 0.68 8 5h 0.64 8/203.2 N/A 0.68 5h 0.92 N/A 0.89 8/203.2** Output Water 73 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00026 TABLE 13c Run ID: AT089 Flow 200 ml/min Rate: Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.18 7/177.8* 0.22/5.59 2.16 5a 1.80 N/A 1.77 2 5b 0.99 8/203.2 N/A 0.99 5b 1.15 N/A 1.13 3 5c 1.12 8/203.2 N/A 1.14 5c 1.00 N/A 0.98 4 5d 1.33 8/203.2 N/A 1.27 5d 1.35 N/A 1.32 5 5e 1.51 9/228.6 N/A 1.49 5e 1.16 N/A 1.12 6 5f 1.05 8/203.2 N/A 1.00 5f 1.04 N/A 1.01 7 5g 1.15 8/203.2 N/A 1.11 5g 1.14 N/A 1.10 8 1h 1.23 8/203.2 0.19/4.83 1.19 5h 1.31 N/A 1.27 8/203.2** Output Water 78 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0569] Atomic Absorption Spectroscopy (AAS) samples were prepared and measurement values were obtained, as discussed in Example 6. Table 13d shows the results. Note that Table 13d includes acolumn entitled Electrode Configuration. This column contains characters of 1 and 0. The 1's represent an electrode configuration corresponding to Electrode Set #1 (i.e., a 1, 5 combination). The 0's represent an electrode combination of 5, 5. Thus, for example, AT089 is represented by 10000001 which means an eight electrode set combination was used to make AT089 and the combination corresponded to Set #1=1, 5; Sets #2-#7=5, 5; and Set #8=1, 5.
TABLE-US-00027 TABLE 13d Electrode Measured Ag Measured Ag Run ID Configuration PPM (initial) PPM (20 hours) AT089 10000001 44.3 45.0 AT090 10000000 40.8 37.2 AT091 10010000 43.6 44.3
[0570] Table 13d includes a column entitled Measured Ag PPM (initial). This column corresponds to the silver content of each of the eight solutions measured within one hour of its production. As shown, the measured ppm for each of the three Runs were generally similar. However, another column entitled, Measured Ag PPM (20 hours) shows that the initial and 20 hours PPM measurements are essentially the same (e.g., within operation error of the AAS) for samples corresponding to Run Id's AT089 and AT091. This means that essentially no significant settling of the constituent particles found in these runs occurred. However, the sample associated with Run ID AT090 was examined after 20 hours, a significant portion of the constituent particles had settled, with the samples taken from Run AT089 losing about 3.6 ppm out of 40 ppm due to particulate settling.
[0571] As discussed in Example 7, a dynamic light scattering (DLS) approach was utilized to obtain average particle size made in each of these three samples. The largest particles were made in AT090; and the smallest particles were made in AT091. Specifically,
[0572] In an effort to determine efficacy against an E. coli bacteria (discussed in greater detail earlier herein), each of the three solutions made according to this Example 8 were all diluted to the exact same ppm for silver in order to compare their relative efficacies in a normalized manner. In this regard, the normalization procedure was, for each of the samples, based on the ppm measurement taken after twenty hours of settling. Accordingly, for example, samples made according to Run AT090 were diluted from 37.2 ppm down to 4 ppm; whereas the samples associated with Run AT091 were diluted from 44.0 ppm, down to 4 ppm. These samples were then further diluted to permit Bioscreen measurements to be performed, as discussed above herein.
Example 9
Manufacturing Silver-Based Nanoparticles/Nanoparticle Solutions AT091, AT092, AT093, AT094 and AT095 Using Plasmas in Multiple Atmospheres
[0573] This Example utilizes essentially the same basic apparatus used to make the solutions of Examples 1-5, however, this Example uses two plasmas 4 occurring in a controlled atmosphere environment. Controlled atmospheres were obtained by using the embodiment shown in
[0574] Tables 14a-14e summarize portions of electrode design, configuration, location and operating voltages. As shown in Tables 14a-14e, the target voltages were set to a low of about 400-500 volts (reducing atmosphere and ozone) and a high of about 3,000 volts (helium atmosphere).
[0575] Further, bar charts of the actual and target voltages for each electrode in each electrode set, are shown in
[0576] Likewise, the atmosphere of ozone (AT094) was achieved by creating a positive pressure of ozone created by an ozone generator and inputted into the atmosphere control device 35, as discussed above herein. It should be noted that significant nitrogen content was probably present in the supplied ozone.
[0577] Further, the atmosphere of helium (AT095) was achieved by creating a positive pressure of helium inputted into the atmosphere control device 35, as discussed above herein.
[0578] The atmosphere of air was achieved without using the atmosphere control device 35.
[0579] The reducing atmosphere (or air-deprived atmosphere) was achieved by providing the atmosphere control device 35 around each electrode 1, 5 in Electrode Sets #1 and #4 and not providing any gas into the inlet portion 37 of the atmosphere control devices 35. In this instance, the external atmosphere (i.e., an air atmosphere) was found to enter into the atmosphere control device through the hole 37 and the plasma 4 created was notably much more orange in color relative to the air atmosphere plasma.
[0580] In an effort to understand the composition of each of the plasmas 4, a Photon Control Silicon CCD Spectrometer, SPM-002-E (from Blue Hill Optical Technologies, Westwood, Mass.) was used to collect the emission spectra for each of the plasmas 4.
[0581] Specifically, in reference to
[0582] Prior to the collection of any spectra created by each plasma 4, the atmosphere control device was saturated with each gas for 30 seconds and a background spectrum was collected with 2 second exposure set in the software package. The plasma 4 was active for 10 minutes prior to any data collection. The primary spot from the laser 501 was aligned with the same point each time. Three separate spectra were collected for each run and then averaged. The results of each spectra are shown in
TABLE-US-00028 TABLE 14a Run ID: AT091 Flow 200 ml/min Rate: Atmosphere For Set #1 and Set #4: Air Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.04 7/177.8* 0.22/5.59 2.04 5a 1.67 N/A 1.66 2 5b 0.94 8/203.2 N/A 0.93 5b 1.11 N/A 1.10 3 5c 1.01 8/203.2 N/A 0.98 5c 1.07 N/A 1.05 4 1d 1.44 8/203.2 0.19/4.83 1.41 5d 1.12 N/A 1.11 5 5e 1.09 9/228.6 N/A 1.07 5e 0.56 N/A 0.55 6 5f 0.72 8/203.2 N/A 0.71 5f 0.72 N/A 0.70 7 5g 0.79 8/203.2 N/A 0.81 5g 0.73 N/A 0.68 8 5h 0.64 8/203.2 N/A 0.68 5h 0.92 N/A 0.89 8/203.2** Output Water 73 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00029 TABLE 14b Run ID: AT092 Flow 200 ml/min Rate: Atmosphere For Set #1 and Set #4: Nitrogen Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.39 7/177.8* 0.22/5.59 2.27 5a 2.02 N/A 1.99 2 5b 1.39 8/203.2 N/A 1.30 5b 1.51 N/A 1.54 3 5c 1.49 8/203.2 N/A 1.47 5c 1.50 N/A 1.52 4 1d 1.64 8/203.2 0.19/4.83 1.66 5d 1.33 N/A 1.31 5 5e 1.46 9/228.6 N/A 1.47 5e 1.05 N/A 0.98 6 5f 1.18 8/203.2 N/A 1.13 5f 1.13 N/A 1.11 7 5g 1.26 8/203.2 N/A 1.20 5g 1.17 N/A 1.03 8 5h 0.94 8/203.2 N/A 0.87 5h 1.12 N/A 1.07 8/203.2** Output Water 88 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00030 TABLE 14c Run ID: AT093 Flow Rate: 200 ml/min Atmosphere For Set #1 and Set #4: Reducing or Air-Deprived Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.04 7/177.8* 0.22/5.59 2.02 5a 1.50 N/A 1.49 2 5b 0.76 8/203.2 N/A 0.76 5b 1.02 N/A 1.03 3 5c 0.91 8/203.2 N/A 0.91 5c 0.98 N/A 0.99 4 1d 1.38 8/203.2 0.19/4.83 1.39 5d 1.01 N/A 0.99 5 5e 0.94 9/228.6 N/A 0.92 5e 0.39 N/A 0.38 6 5f 0.60 8/203.2 N/A 0.58 5f 0.50 N/A 0.48 7 5g 0.68 8/203.2 N/A 0.65 5g 0.55 N/A 0.56 8 5h 0.59 8/203.2 N/A 0.59 5h 0.89 N/A 0.87 8/203.2** Output Water 75 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00031 TABLE 14d Run ID: AT094 Flow 200 ml/min Rate: Atmosphere For Set #1 and Set #4: Ozone Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.24 7/177.8* 0.22/5.59 2.20 5a 1.73 N/A 1.74 2 5b 0.93 8/203.2 N/A 0.95 5b 1.16 N/A 1.18 3 5c 1.09 8/203.2 N/A 1.10 5c 1.15 N/A 1.17 4 1d 1.45 8/203.2 0.19/4.83 1.47 5d 1.08 N/A 1.10 5 5e 0.99 9/228.6 N/A 1.00 5e 0.43 N/A 0.45 6 5f 0.64 8/203.2 N/A 0.63 5f 0.52 N/A 0.56 7 5g 0.71 8/203.2 N/A 0.74 5g 0.63 N/A 0.64 8 5h 0.66 8/203.2 N/A 0.67 5h 0.95 N/A 0.95 8/203.2** Output Water 76 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00032 TABLE 14e Run ID: AT095 Flow 200 ml/min Rate: Atmosphere For Set #1 and Set #4: Helium Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 3.09 7/177.8* 0.22/5.59 3.11 5a 2.98 N/A 2.96 2 5b 2.81 8/203.2 N/A 2.80 5b 2.86 N/A 2.83 3 5c 2.38 8/203.2 N/A 2.38 5c 2.32 N/A 2.30 4 1d 2.64 8/203.2 0.19/4.83 2.58 5d 2.50 N/A 2.49 5 5e 2.06 9/228.6 N/A 2.07 5e 1.64 N/A 1.63 6 5f 1.34 8/203.2 N/A 1.36 5f 1.31 N/A 1.31 7 5g 1.27 8/203.2 N/A 1.28 5g 1.12 N/A 1.12 8 5h 1.08 8/203.2 N/A 1.08 5h 1.26 N/A 1.25 8/203.2** Output Water 95 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0583] Atomic Absorption Spectroscopy (AAS) samples were prepared and measurement values were obtained, as discussed in Example 6. Table 14f shows the results. Note that Table 14f includes a column entitled Electrode Configuration. This column contains characters 1 and 0. The 1's represent an electrode configuration corresponding to Electrode Set #1 (i.e., a 1, 5 combination). The 0's represent an electrode combination of 5, 5. Thus, for example, AT91 is represented by 10010000 which means an eight electrode set combination was used to make AT091 and the combination corresponded to Set #1=1, 5; Set #2=5, 5; Set #3=5, 5; Set #4=1, and Set #5-Set #8=5, 5.
TABLE-US-00033 TABLE 14f Electrode Measured Ag Run ID Configuration PPM Atmosphere AT091 10010000 44.0 Air AT092 10010000 40.3 Nitrogen AT093 10010000 46.8 Reducing AT094 10010000 44.5 Ozone AT095 10010000 78.3 Helium
[0584] Table 14f includes a column entitled Measured Ag PPM. This column corresponds to the silver content of each of the eight solutions. As shown, the measured ppm produced in each of the atmospheres of air, nitrogen, reducing and ozone were substantially similar. However, the atmosphere of helium (i.e., AT095) produced a much lower ppm level. Also, the size of particulate matter in the AT095 solution was significantly larger than the size of the particulate matter in each of the other four solutions. The particulate sizes were determined by dynamic light scattering methods, as discussed above herein.
[0585] It is clear from
[0586] In an effort to determine efficacy against an E. coli bacteria (discussed in greater detail earlier herein), each of the five solutions made according to this Example 9 were all diluted to the exact same ppm for silver in order to compare their relative efficacies in a normalized manner. Accordingly, for example, samples made according to Run AT091 were diluted from 44.0 ppm down to 4 ppm; whereas the samples associated with Run AT095 were diluted from 28.3 ppm, down to 4 ppm. These samples were then further diluted to permit Bioscreen measurements to be performed, as discussed above herein.
Example 10
Manufacturing Silver-Based Nanoparticles/Nanoparticle Solution AT096, Using a Diode Bridge to Rectify an AC Power Source to Form Plasmas
[0587] This Example utilizes essentially the same basic apparatus used to make the solutions of Examples 1-5, however, this Example uses two plasmas 4 formed by a DC-like Power Source (i.e., a diode bridge-rectified power source). Specifically, for Electrode Set #1 and Electrode Set #4, this Example uses a 1, 5 electrode configuration wherein the electrode 1 creates a plasma 4 in accordance with the power source shown in
[0588] Table 15 summarizes portions of electrode design, configuration, location and operating voltages. As shown in Table 15, the target voltages were set to a low of about 400 volts (Electrode Set #4) and a high of about 1,300 volts (Electrode Set #3).
[0589] Further, bar charts of the actual and target voltages for each electrode in each electrode set, are shown in
TABLE-US-00034 TABLE 15 Run ID: AT096 Flow 200 ml/min Rate: Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 0.76 7/177.8* 0.19/4.83 0.69 5a 0.68 N/A 0.68 2 5b 1.25 8/203.2 N/A 1.22 5b 1.13 N/A 1.11 3 5c 1.18 8/203.2 N/A 1.15 5c 1.28 N/A 1.27 4 1d 0.41 8/203.2 0.19/4.83 0.47 5d 0.64 N/A 0.63 5 5e 1.02 9/228.6 N/A 0.99 5e 0.93 N/A 0.91 6 5f 0.76 8/203.2 N/A 0.74 5f 0.76 N/A 0.76 7 5g 0.91 8/203.2 N/A 0.90 5g 0.80 N/A 0.79 8 5h 0.75 8/203.2 N/A 0.74 5h 0.93 N/A 0.93 8/203.2** Output Water 80 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0590] Atomic Absorption Spectroscopy (AAS) samples were prepared and measurement values were obtained, as discussed in Example 6. Table 15a shows the results. Note that Table 15a includes a column entitled Electrode Configuration. This column contains characters 1* and 0. The 1* represents an electrode configuration corresponding to Electrode Set #1 (i.e., a 1, 5 combination, wherein the electrode 1 is negatively biased and the electrode 5 is positively biased. The 0's represent an electrode combination of 5, 5.
TABLE-US-00035 TABLE 15a Electrode Measured Ag Run ID Configuration PPM Atmosphere AT096 1*001*0000 51.2 Air
[0591] Table 15a includes a column entitled Measured Ag PPM. This column corresponds to the silver content of the solution. As shown, the measured ppm was 51.2 ppm, which was substantially higher than any other samples made by the other eight electrode sets utilized in any other Example.
[0592] In an effort to determine efficacy against an E. coli bacteria (discussed in greater detail earlier herein), this solution AT096 was tested against each of the five solutions made according to Example 9 above herein. Specifically, all of the five solutions from Example 9 and AT096 were diluted to the exact same ppm for silver in order to compare their relative efficacies in a normalized manner as discussed in Example 9.
[0593] The atmosphere used for AT096 was air, and the corresponding spectra of the air plasma is shown in
[0594] Similarly,
Example 11
Efficacy and Cytotoxicity Testing of Related Nanoparticle Solutions
[0595] This Example follows the teachings of Examples 2 [AT060], 3 [AT031-AT064] and 4 [BT006-BT012] to manufacture two different silver-based nanoparticle/nanoparticle solutions and one zinc-based nanoparticle/nanoparticle solution. Additionally, a new and different solution (i.e., PT001) based in part on the inventive process for making BT006 and BT012 was also produced. Once produced, three solutions were tested for efficacy and cytotoxicity.
[0596] Specifically, the solution made by the method of Example 2 (i.e., AT060) was tested for cytotoxicity against Murine Liver Epithelial Cells, as discussed above herein. The results are shown in
[0597] Mixtures of the materials (i.e., AT060, AT064 and BT012) were then made in order to form GR5 and GR8, in accordance with what is shown in Table 8 herein relating to the solutions GR5 and GR8. Specifically, AT064 and BT012 were mixed together to form GR5; and AT060 and BT012 were mixed together to form GR8 to result in the amounts of silver and zinc in each being the same as what is shown in Table 8.
[0598] Once the solutions of GR5 and GR8 were formed, the cytotoxicity for each was measured. Specifically, as shown in
[0599] In comparison,
[0600] The other inventive material in this Example 11, PT001, was made by the following process. Electrode Set #1 was a 1, 5 combination. Electrode Set #2 was also a 1, 5 combination. There were no electrode sets at positions 2-8. Accordingly, the designation for this electrode combination was a 11XXXXXXA. The composition of each of electrodes 1 and 5 in both Electrode Sets #1 and #2 were high-purity platinum (i.e., 99.999%/). Table 16a sets forth thes pecific run conditions for PT001.
[0601] Further, bar charts of the actual and target voltages for each electrode in each electrode set, are shown in
TABLE-US-00036 TABLE 16a Run ID: PT001 Flow 150 ml/min Rate: Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 1.90 7/177.8* .22/5.59 2.00 5a 1.37 N/A 1.51 2 1b 0.78 8/203.2 .22/5.59 0.87 5b 0.19 N/A 0.18 N/A 57/1447.8** N/A N/A N/A N/A N/A Output Water 49 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0602] The solution PT001 was then treated as if it had an equivalent volume of zinc-based nanoparticles equivalent to those present in BT012 (i.e., 23 ppm zinc). In other words, a volume of about 150 ml of PT001 was added to about 50 ml of AT064 to produce GR5* and a volume of about 170 ml of PT001 was added to about 33 ml of AT060 to produce GR8*. Once mixed, these new material solutions (i.e., GR5* and GR8*) were allowed to sit for 24 hours prior to being tested for cytotoxicity.
[0603]
[0604] Likewise,
[0605] Accordingly, the LD.sub.50 of each of GR5* and GR8* was higher than the corresponding LD.sub.50 's of GR5 and GR8, respectively (i.e., with regard to the silver content in each of the mixes GR5 and GR8).
[0606] The biological efficacies against E. coli of each of GR5 and GR5* were then compared. Specifically,
[0607] Likewise, a comparison between the biological efficacy against E. coli was also performed for GR8 and GR8*. This comparison is shown in
[0608] Accordingly, this Example shows that cytotoxicity of solutions GR5 and GR8 can be lowered by utilizing the solution PT001 instead of BT012 in each of the mixes GR5 and GR8. Moreover, such cytotoxicity is lowered without sacrificing biological efficacy against E coli, as shown in
[0609] However, it should be understood that other in vivo benefits can be obtained by the presence of, for example, the material corresponding to BT012 in the solutions GR5 and GR8.
Example 12
Comparison of Biological Performance of Two Different Silver-Based Nanoparticles/Nanoparticle Solutions by Adding Variable Zinc Nanoparticles/Nanoparticle Solutions and Related Aging Study
[0610] The materials disclosed in Example 11, namely AT064 and AT060 and an equivalent to BT012 (i.e., BT013) were mixed together in varying proportions to determine if any differences in biological efficacy could be observed (e.g., similar to the studies shown in
[0611] Specifically,
[0612] Specifically,
[0613]
[0614] However, the biological efficacy results are dramatically different in
[0615] Additional biological efficacy tests were run to determine if additional hold time had any further enhancing effects. Specifically, the data in
[0616] In an effort to clarify the differences in biological efficacy observed in
[0617] Specifically, two sets of DLS tests were performed. The first test mixed together AT064 and BT013 in proportion to produce GR5 (i.e., about 50 ml of AT064 and about 150 ml of BT013). The second test mixed together AT060 and BT013 in proportion to produce GR8 (i.e., about 33 ml of AT060 and about 170 ml of BT013).
[0618] The results of the DLS measurements as a function of time after mixing the aforementioned materials together are shown in
[0619] It is clear from the results shown in
[0620] Without wishing to be bound by any particular theory or explanation, it appears that particle size and biological performance (e.g., efficacy against E. coli) are related.
Example 13
The Effect of Input Water Temperature on the Manufacturing and Properties of Silver-Based Nanoparticles/Nanoparticle Solutions AT110, AT109 and AT111 and Zinc-Based Nanoparticles/Nanoparticle Solutions BT015, BT014 and BT016; and 50/50 Volumetric Mixtures Thereof
[0621] This Example utilizes essentially the same basic apparatus used to make the solutions of Examples 1-5, however, this Example uses three different temperatures of water input into the trough member 30.
[0622] Specifically: (1) water was chilled in a refrigerator unit until it reached a temperature of about 2 C. and was then pumped into the trough member 30, as in Examples 1-5; (2) water was allowed to adjust to ambient room temperature (i.e., 21 C.) and was then pumped into the trough member 30, as in Examples 1-5; and (3) water was heated in a metal container until it was about 68 C. (i.e., for Ag-based solution) and about 66 C. (i.e., for Zn-based solution), and was then pumped into the trough member 30, as in Examples 1-5.
[0623] The silver-based nanoparticle/nanoparticle solutions were all manufactured using a set-up where Electrode Set #1 and Electrode Set #4 both used a 1, 5 electrode configuration. All other Electrode Sets #2, #3 and #5-#8, used a 5, 5 electrode configuration. These silver-based nanoparticle/nanoparticle solutions were made by utilizing 99.95% pure silver electrodes for each of electrodes 1 and/or 5 in each electrode set.
[0624] Also, the zinc-based nanoparticles/nanoparticle solutions were all manufactured with each of Electrode Sets #1-#8 each having a 1,5 electrode configuration. These zinc-based nanoparticles/nanoparticle solutions also were made by utilizing 99.95% pure zinc electrodes for the electrodes 1,5 in each electrode set.
[0625] Tables 17a-17f summarize electrode design, configuration, location and operating voltages. As shown in Tables 17a-17c, relating to silver-based nanoparticle/nanoparticle solutions, the target voltages were set to a low of about 620 volts and a high of about 2,300 volts; whereas with regard to zinc-based solution production, Tables 17d-17f show the target voltages were set to a low of about 500 volts and a high of about 1,900 volts.
[0626] Further, bar charts of the actual and target voltages for each electrode in each electrode set, are shown in
TABLE-US-00037 TABLE 17a Cold Input Water (Ag) Run ID: AT110 Flow 200 ml/min Rate: Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.35 7/177.8* 0.22/5.59 2.34 5a 2.00 N/A 2.01 2 5b 1.40 8/203.2 N/A 1.41 5b 1.51 N/A 1.51 3 5c 1.23 8/203.2 N/A 1.22 5c 1.26 N/A 1.26 4 1d 1.37 8/203.2 0.19/4.83 1.37 5d 0.99 N/A 1.00 5 5e 1.17 9/228.6 N/A 1.17 5e 0.62 N/A 0.62 6 5f 0.63 8/203.2 N/A 0.63 5f 0.58 N/A 0.58 7 5g 0.76 8/203.2 N/A 0.76 5g 0.61 N/A 0.64 8 5h 0.70 8/203.2 N/A 0.70 5h 0.94 N/A 0.96 8/203.2** Input Water Temp 2 C. Output Water Temp 70 C. *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00038 TABLE 17b Room Temperature Input Water (Ag) Run ID: AT109 Flow 200 ml/min Rate: Target Average Voltage Distance Distance Voltage Set # Electrode # (kV) c-c in/mm x in/mm (kV) 1 1a 2.23 7/177.8* 0.22/5.59 2.19 5a 1.80 N/A 1.79 2 5b 1.26 8/203.2 N/A 1.19 5b 1.42 N/A 1.42 3 5c 1.27 8/203.2 N/A 1.25 5c 1.30 N/A 1.30 4 1d 1.46 8/203.2 0.19/4.83 1.39 5d 1.05 N/A 1.04 5 5e 1.15 9/228.6 N/A 1.14 5e 0.65 N/A 0.64 6 5f 0.74 8/203.2 N/A 0.73 5f 0.69 N/A 0.69 7 5g 0.81 8/203.2 N/A 0.80 5g 0.65 N/A 0.66 8 5h 0.80 8/203.2 N/A 0.79 5h 1.05 N/A 1.05 8/203.2** Input Water Temp 21 C. Output Water Temp 75 C. *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00039 TABLE 17c Hot Input Water (Ag) Run ID: AT111 Flow 200 ml/min Rate: Target Aver- Volt- Distance Distance age Electrode age c-c x Voltage Set # # (kV) in/mm in/mm (kV) 1 1a 2.29 7/177.8* 0.22/5.59 2.19 5a 1.75 N/A 1.76 2 5b 1.39 8/203.2 N/A 1.39 5b 1.64 N/A 1.64 3 5c 1.41 8/203.2 N/A 1.42 5c 1.49 N/A 1.48 4 1d 1.62 8/203.2 0.19/4.83 1.61 5d 1.29 N/A 1.29 5 5e 1.41 9/228.6 N/A 1.42 5e 0.94 N/A 0.93 6 5f 0.94 8/203.2 N/A 0.94 5f 0.91 N/A 0.91 7 5g 1.02 8/203.2 N/A 1.03 5g 0.88 N/A 0.88 8 5h 0.95 8/203.2 N/A 0.95 5h 1.15 N/A 1.16 8/203.2** Input Water Temp 68 C. Output Water Temp 94 C. *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00040 TABLE 17d Cold Input Water (Zn) Run ID: BT015 Flow 150 ml/min Rate: Target Aver- Volt- Distance Distance age Electrode age c-c x Voltage Set # # (kV) in/mm in/mm (kV) 1 1a 1.91 7/177.8* 0.29/7.37 1.90 5a 1.67 N/A 1.65 2 1b 1.07 8/203.2 0.22/5.59 1.11 5b 1.19 N/A 1.20 3 1c 0.89 8/203.2 0.22/5.59 0.85 5c 0.88 N/A 0.88 4 1d 0.98 8/203.2 0.15/3.81 1.08 5d 0.77 N/A 0.76 5 1e 1.31 9/228.6 0.22/5.59 1.37 5e 0.50 N/A 0.50 6 1f 1.07 8/203.2 0.22/5.59 1.07 5f 0.69 N/A 0.69 7 1g 0.79 8/203.2 0.22/5.59 0.79 5g 0.73 N/A 0.74 8 1h 0.61 8/203.2 0.15/3.81 0.60 5h 0.88 N/A 0.85 8/203.2** Input Water Temp 2 C. Output Water Temp 63 C. *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00041 TABLE 17e Room Temperature Input Water (Zn) Run ID: BT014 Flow 150 ml/min Rate: Target Aver- Volt- Distance Distance age Electrode age c-c x Voltage Set # # (kV) in/mm in/mm (kV) 1 1a 1.82 7/177.8* 0.29/7.37 1.79 5a 1.58 N/A 1.57 2 1b 1.06 8/203.2 0.22/5.59 1.04 5b 1.14 N/A 1.14 3 1c 0.91 8/203.2 0.22/5.59 0.90 5c 0.84 N/A 0.85 4 1d 0.88 8/203.2 0.15/3.81 0.88 5d 0.71 N/A 0.73 5 1e 1.55 9/228.6 0.22/5.59 1.30 5e 0.50 N/A 0.50 6 1f 1.06 8/203.2 0.22/5.59 1.08 5f 0.72 N/A 0.72 7 1g 0.82 8/203.2 0.22/5.59 0.82 5g 0.76 N/A 0.76 8 1h 0.83 8/203.2 0.15/3.81 0.60 5h 0.92 N/A 0.88 8/203.2** Input Water Temp 21 C. Output Water Temp 69 C. *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00042 TABLE 17f Hot Input Water (Zn) Run ID: BT016 Flow 150 ml/min Rate: Target Aver- Volt- Distance Distance age Electrode age c-c x Voltage Set # # (kV) in/mm in/mm (kV) 1 1a 1.87 7/177.8* 0.29/7.37 1.81 5a 1.62 N/A 1.62 2 1b 1.22 8/203.2 0.22/5.59 1.17 5b 1.27 N/A 1.23 3 1c 1.06 8/203.2 0.22/5.59 1.00 5c 1.02 N/A 1.00 4 1d 1.13 8/203.2 0.15/3.81 1.12 5d 0.94 N/A 0.92 5 1e 1.46 9/228.6 0.22/5.59 1.43 5e 0.67 N/A 0.69 6 1f 1.25 8/203.2 0.22/5.59 1.23 5f 0.89 N/A 0.89 7 1g 0.95 8/203.2 0.22/5.59 0.95 5g 0.87 N/A 0.83 8 1h 0.75 8/203.2 0.15/3.81 0.71 5h 1.01 N/A 0.99 8/203.2** Input Water Temp 66 C. Output Water Temp 82 C. *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0627] Once each of the silver-based nanoparticle/nanoparticle solutions AT110, AT109 and AT111, as well as the zinc-based nanoparticle/nanoparticle solutions BT015, BT014 and BT016 were manufactured, these six solutions were mixed together to make nine separate 50/50 volumetric mixtures. Reference is made to Table 17g which sets forth a variety of physical and biological characterization results for the six raw materials as well as the nine mixtures made therefrom.
TABLE-US-00043 TABLE 17g Predominant DLS Mass Time (hours) to Zeta Distribution Relative Bacteria Growth Potential DLS Peak Bioscreen Beginning PPM Ag PPM Zn (Avg) pH % Transmission (Radius in nm) Performance (1.0 McFarland) Cold Ag (AT 110) 49.4 N/A 8.4 3.8 40% 41.8 4.0 3.30 RT Ag (AT 109) 39.5 N/A 19.7 4.5 5% 46.3 * 2.0 3.00 Hot Ag (AT 111) 31.1 N/A 38.2 5.2 4% 15.6 * 3.3 3.50 Cold Zn (BT 015) N/A 24.1 19.2 2.8 100% 46.2 0.0 0.00 RT Zn (BT 014) N/A 24.6 11.2 2.9 100% 55.6 0.0 0.00 Hot Zn (BT 016) N/A 17.7 11.9 3.1 100% 12.0 * 0.0 0.00 Cold Ag/Cold Zn 24.3 11.9 26.4 3.0 100% 25.2 * 2.7 5.25 Cold Ag/RT Zn 24.2 12.0 25.2 3.3 100% 55.0 9.0 17.00 Cold Ag/Hot Zn 24.3 8.6 24.5 3.3 100% 28.3 * 9.0 16.50 RT Ag/Cold Zn 19.9 11.8 23.0 3.1 100% 58.6 11.0 16.25 RT Ag/RT Zn 20.2 12.4 18.3 3.3 100% 1.5 6.3 12.00 RT Ag/Hot Zn 20.2 8.6 27.0 3.4 100% 52.9 4.7 5.00 Hot Ag/Cold Zn 14.0 12.0 24.6 3.2 100% 51.4 11.7 17.25 Hot Ag/RT Zn 14.2 12.0 13.7 3.3 100% 48.7 7.3 13.45 Hot Ag/Hot Zn 15.0 8.5 7.2 3.4 100% 44.6 9.7 16.75 * DLS data varies significantly suggesting very small particulate and/or significant ionic character
[0628] Specifically, for example, in reference to the first mixture listed in Table 17g, that mixture is labeled as Cold Ag/Cold Zn. Similarly, the last of the mixtures referenced in Table 17g is labeled Hot Ag/Hot Zn. Cold Ag or Cold Zn refers to the input water temperature into the trough member 30 being about 2 C. RT Ag or RT Zn refers to the input water temperature being about 21 C. Hot Ag refers to refers to the input water temperature being about 68 C.; and Hot Zn refers to the input water temperature to the trough member 30 being about 66 C.
[0629] The physical parameters reported for the individual raw materials, as well as for the mixtures, include PPM Ag and PPM Zn. These ppm's (parts per million) were determined by the Atomic Absorption Spectroscopy techniques discussed above herein in Example 6. It is interesting to note that the measured PPM of the silver component in the silver-based nanoparticle/nanoparticle solutions was higher when the input temperature of the water into the trough member 30 was lower (i.e., Cold Ag (AT110) corresponds to an input water temperature of 2 C. and a measured PPM of silver of 49.4). In contrast, when the input temperature of the water used to make sample AT111 was increased to 68 C. (i.e., the Hot Ag), the measured amount of silver decreased to 31.1 ppm (i.e., a change of almost 20 ppm). Accordingly, when mixtures were made utilizing the raw material Cold Ag versus Hot Ag, the PPM levels of the silver in the resulting mixtures varied.
[0630] Each of the nine mixtures formulated were each approximately 50% by volume of the silver-based nanoparticle solution and 50% by volume of the zinc-based nanoparticle solution. Thus, whenever Hot Ag solution was utilized, the resulting PPM in the mixture would be roughly half of 31.1 ppm; whereas when the Cold Ag solution was utilized the silver PPM would be roughly half of 49.4 ppm.
[0631] The zinc-based nanoparticle/nanoparticle solutions behaved similarly to the silver-based nanoparticle/nanoparticle solutions in that the measured PPM of zinc decreased as a function of increasing water input temperature, however, the percent decrease was less. Accordingly, whenever Cold Zn was utilized as a 50 volume percent component in a mixture, the measured zinc ppm in the mixtures was larger than the measured zinc ppm when Hot Zn was utilized.
[0632] Table 17g includes a third column, entitled, Zeta Potential (Avg). Zeta potential is known as a measure of the electo-kinetic potential in colloidal systems. Zeta potential is also referred to as surface charge on particles. Zeta potential is also known as the potential difference that exists between the stationary layer of fluid and the fluid within which the particle is dispersed. A zeta potential is often measured in millivolts (i.e., mV). The zeta potential value of approximately mV is an arbitrary value that has been chosen to determine whether or not stability exists between a dispersed particle in a dispersion medium. Thus, when reference is made herein to zeta potential, it should be understood that the zeta potential referred to is a description or quantification of the magnitude of the electrical charge present at the double layer.
[0633] The zeta potential is calculated from the electrophoretic mobility by the Henry equation:
where z is the zeta potential, U.sub.E is the electrophoretic mobility, is a dielectric constant, is a viscosity, (ka) is Henry's function. For Smoluchowski approximation (ka)=1.5.
[0634] Electrophoretic mobility is obtained by measuring the velocity of the particles in an applied electric field using Laser Doppler Velocimetry (LDV). In LDV the incident laser beam is focused on a particle suspension inside a folded capillary cell and the light scattered from the particles is combined with the reference beam. This produces a fluctuating intensity signal where the rate of fluctuation is proportional to the speed of the particles (i.e. electrophoretic mobility).
[0635] In this Example, a Zeta-Sizer Nano-ZS produced by Malvern Instruments was utilized to determine zeta potential. For each measurement a 1 ml sample was filled into clear disposable zeta cell DTS1060C. Dispersion Technology Software, version 5.10 was used to run the Zeta-Sizer and to calculate the zeta potential. The following settings were used: dispersantwater, temperature25 C., viscosity0.8872 cP, refraction index1.330, dielectric constant78.5, approximation modelSmoluchowski. One run of hundred repetitions was performed for each sample.
[0636] Table 17g shows clearly that for the silver-based nanoparticle/nanoparticle solutions the zeta potential increased in negative value with a corresponding increasing input water temperature into the trough member 30. In contrast, the Zeta-Potential for the zinc-based nanoparticle/nanoparticle solutions was positive and decreased slightly in positive value as the input temperature of the water into the trough member 30 increased.
[0637] It is also interesting to note that the zeta potential for all nine of the mixtures made with the aforementioned silver-based nanoparticle/nanoparticle solutions and zinc-based nanoparticle/nanoparticle solutions raw materials were positive with different degrees of positive values being measured.
[0638] The fourth column in Table 17g reports the measured pH. The pH was measured for each of the raw material solutions, as well as for each of the mixtures. These pH measurements were made in accordance with the teachings for making pH measurements in Examples 1-5. It is interesting to note that the pH of the silver-based nanoparticle/nanoparticle solutions changed significantly as a function of the input water temperature into the trough member 30 starting with a low of 3.8 for the cold input water (i.e., 2 C.) and increasing to a value of 5.2 for the hot water input (i.e., 68 C.). In contrast, while the measured pH for each of three different zinc-based nanoparticle/nanoparticle solutions were, in general, significantly lower than any of the silver-based nanoparticle/nanoparticle solutions pH measurements, the pH did not vary as much in the zinc-based nanoparticle/nanoparticle solutions.
[0639] The pH values for each of the nine mixtures were much closer to the pH values of the zinc-based nanoparticle/nanoparticle solutions, namely, ranging from a low of about 3.0 to a high of about 3.4.
[0640] The fifth column in Table 17g reports DLS % Transmission. The DLS corresponds to Dynamic Light Scattering. Specifically, the DLS measurements were made according to the DLS measuring techniques discussed above herein (e.g., Example 7). The % Transmission is reported in Table 17g because it is important to note that lower numbers correspond to a lesser amount of laser intensity being required to report detected particle sizes (e.g., a reduced amount of laser light is required to interact with species when such species have a larger radius and/or when there are higher amounts of the species present). Accordingly, the DLS % Transmission values for the three silver-based nanoparticle/nanoparticle solutions were lower than all other % Transmission values. Moreover, a higher % of Transmission number (i.e., 100%) is indicative of very small nanoparticles and/or significant ionic character present in the solution (e.g., at least when the concentration levels or ppm's of both silver and zinc are as low as those reported herein).
[0641] The next column entitled, Predominant DLS Mass Distribution Peak (Radius in nm) reports numbers that correspond to the peak in the Gaussian curves obtained in each of the DLS measurements. For example, these reported peak values come from Gaussian curves similar to the ones reported in
[0642] The last two columns in Table 17g summarize detailed microbiological studies. In this regard, E. coli bacteria were tested in a Bioscreen apparatus. The procedures for testing were similar to those procedures discussed in Examples 1-5 herein. Specifically,
[0643] The column entitled Relative Bioscreen Performance is a merit ranking, wherein the higher numbers correspond to the highest performing raw materials and solutions relative to each other. In this regard, the numbers 11 and 11.7 corresponding to RT Ag/Cold Zn and Hot Ag/Cold Zn, respectively were the best performers, based on this ranking. However, in order to define the performances even more particularly, the column entitled, Time (hours) to Bacteria Growth Beginning (1.0 McFarland) shows that the Cold Ag, RT Ag and Hot Ag allow bacteria to begin to grow between 3 and 3.5 hours; the Cold Zn, RT Zn and Hot Zn did not inhibit bacterial growth at all (i.e., the bacterial growth curves substantially corresponded to control growth curves); and the nine different mixtures provided varying times when the bacteria begin to grow with the two worst performing mixtures being Cold Ag/Cold Zn (i.e., 5.25 hours) and RT Ag/Hot Zn (i.e., 5.00 hours); in contrast to the better performing mixtures showing growth times beginning around 16 and 17 hours.
[0644] Without wishing to be bound by any particular theory or explanation, it is clear that the input temperature of the liquid into the trough member 30 does have an effect on the inventive solutions made according to the teachings herein. Specifically, not only are amounts of components (e.g., ppm) affected by water input temperature, but physical properties and biological performance are also affected. Thus, control of water temperature, in combination with control of all of the other inventive parameters discussed herein, can permit a variety of particle sizes to be achieved, differing zeta potentials to be achieved, different pH's to be achieved and corresponding different performance (e.g., biological performances) to be achieved.
Example 14
Manufacturing Gold-Based Nanoparticles/Nanoparticle Solutions GT032, GT031 and GT019
[0645] This Example utilizes essentially the same basic apparatus used to make the solutions of Examples 1-5, however, this Example use gold electrodes for the 8 electrode sets. In this regard, Tables 18a-18c set forth pertinent operating parameters associated with each of the 16 electrodes in the 8 electrode sets utilized to make gold-based nanoparticles/nanoparticle solutions.
TABLE-US-00044 TABLE 18a Cold Input Water (Au) Run ID: GT032 Flow 90 ml/min Rate: Target Aver- Volt- Distance Distance age Electrode age c-c x Voltage Set # # (kV) in/mm in/mm (kV) 1 1a 1.6113 7/177.8* 0.22/5.59 1.65 5a 0.8621 N/A 0.84 2 5b 0.4137 8/203.2 NIA 0.39 5b 0.7679 N/A 0.76 3 5c 0.491 8/203.2 NIA 0.49 5c 0.4816 N/A 0.48 4 1d 0.4579 8/203.2 NIA 0.45 5d 0.6435 N/A 0.60 5 5e 0.6893 9/228.6 N/A 0.67 5e 0.2718 N/A 0.26 6 5f 0.4327 8/203.2 N/A 0.43 5f 0.2993 N/A 0.30 7 5g 0.4691 8/203.2 N/A 0.43 5g 0.4644 N/A 0.46 8 5h 0.3494 8/203.2 N/A 0.33 5h 0.6302 N/A 0.61 8/203.2** Output Water 65 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00045 TABLE 18b 38.3 mg/L of NaHCO.sub.3 (Au) Run ID: GT031 Flow 90 ml/min Rate: Target Aver- Volt- Distance Distance age Electrode age c-c x Voltage Set # # (kV) in/mm in/mm (kV) 1 1a 1.7053 7/177.8* 0.22/5.59 1.69 5a 1.1484 N/A 1.13 2 5b 0.6364 8/203.2 N/A 0.63 5b 0.9287 N/A 0.92 3 5c 0.7018 8/203.2 N/A 0.71 5c 0.6275 N/A 0.62 4 5d 0.6798 8/203.2 N/A 0.68 5d 0.7497 N/A 0.75 5 5e 0.8364 9/228.6 N/A 0.85 5e 0.4474 N/A 0.45 6 5f 0.5823 8/203.2 N/A 0.59 5f 0.4693 N/A 0.47 7 5g 0.609 8/203.2 N/A 0.61 5g 0.5861 N/A 0.59 8 5h 0.4756 8/203.2 N/A 0.48 5h 0.7564 N/A 0.76 8/203.2** Output Water 64 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
TABLE-US-00046 TABLE 18c 45 mg/L of NaCl (Au) Run ID: GT019 Flow 90 ml/min Rate: Target Aver- Volt- Distance Distance age Electrode age c-c x Voltage Set # # (kV) in/mm in/mm (kV) 1 1a 1.4105 7/177.8* 0.22/5.59 1.41 5a 0.8372 N/A 0.87 2 5b 0.3244 8/203.2 N/A 0.36 5b 0.4856 N/A 0.65 3 5c 0.3504 8/203.2 N/A 0.37 5c 0.3147 N/A 0.36 4 5d 0.3526 8/203.2 N/A 0.37 5d 0.4539 N/A 0.50 5 5e 0.5811 9/228.6 N/A 0.60 5e 0.2471 N/A 0.27 6 5f 0.3624 8/203.2 N/A 0.38 5f 0.2905 N/A 0.31 7 5g 0.3387 8/203.2 N/A 0.36 5g 0.3015 N/A 0.33 8 5h 0.2995 8/203.2 N/A 0.33 5h 0.5442 N/A 0.57 8/203.2** Output Water 77 C. Temperature *Distance from water inlet to center of first electrode set **Distance from center of last electrode set to water outlet
[0646] Further,
[0647] Additionally, the following differences in manufacturing set-up were also utilized:
[0648] i) GT032: The input water 3 into the trough member 30 was chilled in a refrigerator unit until it reached a temperature of about 2 C. and was then pumped into the trough member 30, as in Examples 1-5;
[0649] ii) GT031: A processing enhancer was added to the input water 3 prior to the water 3 being input into the trough member 30. Specifically, about 0.145 grams/gallon (i.e., about 38.3 mg/liter) of sodium hydrogen carbonate (soda), having a chemical formula of NaHCO.sub.3, was added to and mixed with the water 3. The soda was obtained from Alfa Aesar and the soda had a formula weight of 84.01 and a density of 2.159 g/cm.sup.3 (i.e., stock #14707, lot D15T43).
[0650] iii) GT019: A processing enhancer was added to the input water 3 prior to the water 3 being input into the trough member 30. Specifically, about 0.17 grams/gallon (i.e., about 45 mg/liter) of sodium chloride (salt), having a chemical formula of NaCl, was added to and mixed with the water 3. The salt was obtained from Fisher Scientific (lot #080787) and the salt had a formula weight of 58.44 and an actual analysis as follows:
TABLE-US-00047 Assay 100% Barium (BA) Pass Test Bromide <0.010% Calcium 0.0002% Chlorate & Nitrate <0.0003% Heavy Metals (AS PB) <5.0 ppm Identification Pass Test Insoluble Water <0.001% Iodide 0.0020% Iron (FE) <2.0 ppm Magnesium <0.0005% Ph 5% SoIn @ 25 Deg C. 5.9 Phosphate (PO4) <5.0 ppm Potassium (K) <0.003% Sulfate (SO4) <0.0040%
TABLE-US-00048 TABLE 18d DLS Predominant Zeta % DLS Mass Potential Trans- Distribution Peak Color of PPM (Avg) pH mission (Radius in nm) Solution GT032 0.4 19.30 3.29 11.7% 3.80 Clear GT031 1.5 29.00 5.66 17.0% 0.78 Purple G1019 6.1 ** ** ** ** Pink ** Values not measured
[0651] Table 18d summarizes the physical characteristics results for each of the three solutions GT032, GT031 and GT019. Full characterization of GT-019 was not completed, however, it is clear that under the processing conditions discussed herein, both processing enhancers (i.e., soda and salt) increase the measured ppm of gold in the solutions GT-031 and GT-019 relative to GT032.
Example 15
Y-Shaped Trough Member 30
[0652] This Example utilized a different apparatus from those used to make the solutions in Examples 1-5, however, this Example utilized similar technical concepts to those disclosed in the aforementioned Examples. In reference to
[0653] Once the solutions made in trough members 30a and 30b had been manufactured, these solutions were then processed in three different ways, namely:
[0654] (i) The Zn-based and Ag-based solutions were mixed together at the point 30d and flowed to the base portion 30o of the Y-shaped trough member 30 immediately after being formed in the upper portions, 30a and 30b, respectively. No further processing occurred in the base portion 30o;
[0655] (ii) The Zn-based and Ag-based solutions made in trough members 30a and 30b were mixed together after about 24 hours had passed after manufacturing each solution in each upper portion trough member 30a and 30b (i.e., the solutions were separately collected from each trough member 30a and 30b prior to being mixed together); and
[0656] (iii) The solutions made in trough members 30a and 30b were mixed together in the base portion 30o of the y-shaped trough member 30 substantially immediately after being formed in the upper portions 30a and 30b, and were thereafter substantially immediately processed in the base portion 30o of the trough member 30 by another four electrode set.
[0657] Table 19a summarizes the electrode design, configuration, location and operating voltages for each of trough members 30a and 30b (i.e., the upper portions of the trough member 30) discussed in this Example. Specifically, the operating parameters associated with trough member 30a were used to manufacture a zinc-based nanoparticle/nanoparticle solution; whereas the operating parameters associated with trough member 30b were used to manufacture a silver-based nanoparticle/nanoparticle solution. Once these silver-based and zinc-based solutions were manufactured, they were mixed together substantially immediately at the point 30d and flowed to the base portion 30o. No further processing occurred.
[0658] Table 19b summarizes the electrode design, configuration, location and operating voltages for each of trough members 30a and 30b (i.e., the upper portions of the trough member 30) discussed in this Example. Specifically, the operating parameters associated with trough member 30a were used to manufacture a zinc-based nanoparticle/nanoparticle solution; whereas the operating parameters associated with trough member 30b were used to manufacture a silver-based nanoparticle/nanoparticle solution. Once these silver-based and zinc-based solutions were manufactured, they were separately collected from each trough member 30a and 30b and were not mixed together until about 24 hours had passed. In this regard, each of the solutions made in 30a and 30b were collected at the outputs thereof and were not allowed to mix in the base portion 30o of the trough member 30, but were later mixed in another container.
[0659] Table 19c summarizes the electrode design, configuration, location and operating voltages for each of trough members 30a and 30b (i.e., the upper portions of the trough member 30) discussed in this Example. Specifically, the operating parameters associated with trough member 30a were used to manufacture a zinc-based nanoparticle/nanoparticle solution; whereas the operating parameters associated with trough member 30b were used to manufacture a silver-based nanoparticle/nanoparticle solution. Once these silver-based and zinc-based solutions were manufactured, they were mixed together substantially immediately at the point 30d and flowed to the base portion 30o and the mixture was subsequently processed in the base portion 30o of the trough member 30. In this regard, Table 19c shows the additional processing conditions associated with the base portion 30o of the trough member 30. Specifically, once again, electrode design, configuration, location and operating voltages are shown.
[0660] Table 19d shows a summary of the physical and biological characterization of the materials made in accordance with this Example 15.
TABLE-US-00049 TABLE 19d (Y-shaped trough summary) Predominant DLS Mass Time to Zeta Distribution Bacteria Potential DLS Peak Growth PPM Ag PPM Zn (Avg) pH % Transmission (Radius in nm) Beginning YT-002BA 21.7 11.5 12.0 3.25 100% 50.0 12.50 YT-003BX N/A 23.2 13.7 2.86 100% 60.0 0.00 YT-004XA 41.4 N/A 26.5 5.26 40% 9.0 14.00 YT-005 21.0 11.0 2.6 3.10 25% 70.0 15.25 YT-001BAB 22.6 19.5 0.6 3.16 100% 60.0 15.50
Example 16
Plasma Irradiance and Characterization
[0661] This Example provides a spectrographic analysis of various adjustable plasmas 4, all of which were formed in air, according to the teachings of the inventive concepts disclosed herein. Example 9 herein utilized a single spectrometer (i.e., photon control silicon CCD Spectrometer 500) to analyze a variety of plasmas (i.e., collect spectral information in the 200-1090 nm range), including spectral information for plasmas made in different atmospheres. In this Example, three different spectrometers having greater sensitivities than the spectrometer used in Example 9 were used to collect similar spectral information. Further, spectrographic analysis was conducted on several plasmas, wherein the electrode member 1 comprised a variety of different metal compositions. Different species in the plasmas 4, as well as different intensities of some of the species, were observed. The presence/absence of such species can affect (e.g., positively and negatively) processing parameters and products made according to the teachings herein.
[0662] In this regard,
[0663] Specifically, the experimental setup for collecting plasma emission data (e.g., irradiance) is depicted in
[0664] The assembly 524 contained one UV collimator (LC-10U) with a refocusing assembly (LF-10U100) for the 170-2400 nm range. The assembly 524 also included an SMA female connector made by Multimode Fiber Optics, Inc. Each LC-10U and LF-10U100 had one UV fused silica lens associated therewith. Adjustable focusing was provided by LF-10U100 at about 100 mm from the vortex of the lens in LF-10U100 also contained in the assembly 524.
[0665] The collimator field of view at both ends of the adjustable plasma 4 was about 1.5 mm in diameter as determined by a 455 m fiber core diameter comprising the solarization resistant UV optical fiber 523 (180-900 nm range and made by Mitsubishi). The UV optical fiber 523 was terminated at each end by an SMA male connector (sold by Ocean Optics; QP450-1-XSR).
[0666] The UV collimator-fiber system 523 and 524 provided 180-900 nm range of sensitivity for plasma irradiance coming from the 1.5 mm diameter plasma cylinder horizontally oriented in different locations in the adjustable plasma 4.
[0667] The X-Z stage 525 comprised two linear stages (PTI) made by Thorlabs Inc., that hold and control movement of the UV collimator 524 along the X and Z axes. It is thus possible to scan the adjustable plasma 4 horizontally and vertically, respectively.
[0668] Emission of plasma radiation collected by UV collimator-fiber system 523, 524 was delivered to either of three fiber coupled spectrometers 520, 521 or 522 made by StellarNet, Inc. (i.e., EPP2000-HR for 180-295 nm, 2400g/mm grating, EPP2000-HR for 290-400 nm, 1800g/mm grating, and EPP2000-HR for 395-505 nm, 1200g/mm grating). Each spectrometer 520, 521 and 522 had a 7 m entrance slit, 0.1 nm optical resolution and a 2048 pixel CCD detector. Measured instrumental spectral line broadening is 0.13 nm at 313.1 nm.
[0669] Spectral data acquisition was controlled by SpectraWiz software for Windows/XP made by StellarNet. All three EPP2000-HR spectrometers 520, 521 and 522 were interfaced with one personal computer 528 equipped with 4 USB ports. The integration times and number of averages for various spectral ranges and plasma discharges were set appropriately to provide unsaturated signal intensities with the best possible signal to noise ratios. Typically, spectral integration time was order of 1 second and number averaged spectra was in range 1 to 10. All recorded spectra were acquired with subtracted optical background. Optical background was acquired before the beginning of the acquisition of a corresponding set of measurements each with identical data acquisition parameters.
[0670] Each UV fiber-spectrometer system (i.e., 523/520, 523/521 and 523/522) was calibrated with an AvaLight -DH-CAL Irradiance Calibrated Light Source, made by Avantes (not shown). After the calibration, all acquired spectral intensities were expressed in (absolute) units of spectral irradiance (mW/m.sup.2/nm), as well as corrected for the nonlinear response of the UV-fiber-spectrometer. The relative error of the AvaLight -DH-CAL Irradiance Calibrated Light Source in 200-1100 nm range is not higher than 10%.
[0671] Alignment of the field of view of the UV collimator assembly 524 relative to the tip 9 of the metal electrode 1 was performed before each set of measurements. The center of the UV collimator assembly 524 field of view was placed at the tip 9 by the alignment of two linear stages and by sending a light through the UV collimator-fiber system 523, 524 to the center of each metal electrode 1.
[0672] The X-Z stage 525 was utilized to move the assembly 524 into roughly a horizontal, center portion of the adjustable plasma 4, while being able to move the assembly 524 vertically such that analysis of the spectral emissions occurring at different vertical heights in the adjustable plasma 4 could be made. In this regard, the assembly 524 was positioned at different heights, the first of which was located as close as possible of the tip 9 of the electrode 1, and thereafter moved away from the tip 9 in specific amounts. The emission spectroscopy of the plasma often did change as a function of interrogation position, as shown in
[0673] For example,
[0674] Table 20a shows specifically each of the spectral lines identified in the adjustable plasma 4 when a silver electrode 1 was utilized to create the plasma 4.
TABLE-US-00050 TABLE 20a meas. tab. meas. tab. En Em Amn Transition (nm) (nm) (nm) (1/cm) (1/cm) gn gm (1/s) Ag || 5s .sup.3D.sub.3-5p .sup.3D.sub.3 211.382 211.4000 0.0180 39168.032 86460.65 7 7 3.26E8 NO A.sup.2.sup.+-X.sup.2 -system: (1-0) 214.7 214.7000 0.0000 Ag || 5s .sup.3D.sub.2-5p .sup.3D.sub.3 218.676 218.6900 0.0140 40745.335 86460.65 5 7 Ag || 5s .sup.1D.sub.2-5p .sup.3D.sub.2 222.953 222.9800 0.0270 46049.029 90887.81 5 5 Ag || 5s .sup.3D.sub.3-5p .sup.3F.sub.4 224.643 224.67 0.0270 39167.986 83669.614 7 9 3.91E8 Ag || 5s .sup.3D.sub.3-5p .sup.3P.sub.1 224.874 224.9 0.0260 40745.335 85200.721 7 5 2.95E8 NO A.sup.2.sup.+-X.sup.2 -system: (0-0) 226.9 226.8300 0.0700 Ag || 5s .sup.1D.sub.2-5p .sup.1P.sub.1 227.998 228.02 0.0220 46049.029 89895.502 5 3 1.39E8 Ag || 5s .sup.3D.sub.1-5p .sup.1D.sub.2 231.705 231.7700 0.0650 43742.7 86888.06 3 5 Ag || 5s .sup.1D.sub.2-5p .sup.1F.sub.3 232.029 232.0500 0.0210 46049.029 89134.688 5 7 2.74E8 Ag || 5s .sup.3D.sub.3-5p .sup.3F.sub.3 232.468 232.5100 0.0420 39167.986 82171.697 7 7 0.72E8 Ag || 5s .sup.3D.sub.2-5p .sup.3P.sub.1 233.14 233.1900 0.0500 40745.335 83625.479 5 3 2.54E8 NO A.sup.2.sup.+-X.sup.2 -system: (0-1) 236.3 236.2100 0.0900 Ag || 5s .sup.3D.sub.2-5p .sup.3F.sub.3 241.323 241.3000 0.0230 40745.335 82171.697 5 7 2.21E8 Ag || 5s .sup.3D.sub.3-5p .sup.3P.sub.2 243.781 243.7700 0.0110 39167.986 80176.425 7 5 2.88E8 Ag || 5s .sup.1D.sub.2-5p .sup.1D.sub.2 244.793 244.8000 0.0070 46049.029 86888.06 5 5 NO A.sup.2.sup.+-X.sup.2 -system: (0-2) 247.1 246.9300 0.1700 NO A.sup.2.sup.+-X.sup.2 -system: (0-3) 258.3 258.5300 0.2300 NO A.sup.2.sup.+-X.sup.2 -system: (1-1) 267.1 267.0600 0.0400 NO A.sup.2.sup.+-X.sup.2 -system: (0-4) 271 271.1400 0.1400 OH A.sup.2-X.sup.2: (1-0) 281.2 281.2000 0.0000 OH A.sup.2-X.sup.2: (1-0) 282 281.9600 0.0400 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (4-2) 295.32 295.3300 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (3-1) 296.2 296.1900 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-0) 297.7 297.7000 0.0000 OH A.sup.2-X.sup.2: (0-0) 306.537 306.4600 0.0770 OH A.sup.2-X.sup.2: (0-0) 306.776 306.8400 0.0640 OH A.sup.2-X.sup.2: (0-0) 307. 844 307.8700 0.0260 OH A.sup.2-X.sup.2: (0-0) 308.986 309.0700 0.0840 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-1) 313.057 313.1564 0.0994 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-0) 316 315.8700 0.1300 Cu | 3d.sup.10 (.sup.1S) 4s .sup.2S.sub.1/2 - 3d.sup.10(.sup.1S) 4p 324.754 324.7800 0.0260 0 30783.686 2 4 1.37E+8 .sup.2P.sup.0.sub.3/2 Ag | 4d.sup.10(.sup.1S) 5s .sup.2S.sub.1/2 - 4d.sup.10(.sup.1S) 5p 328.068 328.1200 0.0520 0 30472.703 2 4 1.47E+8 .sup.2P.sup.0.sub.3/2 O.sub.2 (B.sup.3.sup..sub.u-X.sup.3.sup..sub.g) (0-14) 337 337.0800 0.0800 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-0) 337.1 337.1400 0.0400 Ag | 4d.sup.10(.sup.1S) 5s .sup.2S.sub.1/2 - 4d.sup.10(.sup.1S) 5p 338.2887 338.3500 0.0613 0 29552.061 2 2 1.35E+8 .sup.2P.sup.0.sub.1/2 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-3) 350.05 349.9700 0.0800 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-2) 353.67 353.6400 0.0300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-1) 357.69 357.6500 0.0400 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-0) 358.2 358.2000 0.0000 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-4) 371 370.9500 0.0500 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-3) 375.54 375.4500 0.0900 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-2) 380.49 380.4000 0.0900 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-1) 388.4 388.4200 0.0200 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-0) 391.4 391.3700 0.0300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-4) 399.8 399.7100 0.0900 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-3) 405.94 405.8600 0.0800 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (4-8) 409.48 409.4900 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-5) 421.2 421.1600 0.0400 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-2) 424 423.6400 0.3600 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-1) 427.81 427.8300 0.0200 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (3-8) 441.67 441.6200 0.0500 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-3) 465.1 465.1300 0.0300 Ag | 4d.sup.10(.sup.1S) 5p .sup.2P.sup.0.sub.3/2 - 4d.sup.10(.sup.1S) 466.8477 466.9100 0.0623 30472.7103 51886.971 4 2 7s .sup.2S.sub.1/2 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-2) 470.9 470.8400 0.0600 Ag | 4d.sup.10(.sup.1S) 5p .sup.2P.sup.0.sub.1/2 - 4d.sup.10(.sup.1S) 520.9078 520.8653 0.0425 29552.061 48743.969 2 4 7.50E+7 5d .sup.2D.sub.3/2 Ag | 4d.sup.10(.sup.1S) 5p .sup.2P.sup.0.sub.3/2 - 4d.sup.10(.sup.1S) 546.5497 546.5386 0.0111 30472.703 48764.219 4 6 8.60E+7 5d .sup.2D.sub.5/2 Na | 3s 2S.sub.1/2 - 3p .sup.2P.sup.0.sub.3/2 588.99 588.995 0.0050 H | 2p .sup.2P.sub.3/2 - 3d .sup.2D.sub.5/2 656.2852 655.8447 0.4405 82259.287 97492.357 4 6 6.47E+7 N | 3s .sup.4P.sub.5/2 - 3p .sup.4S.sub.3/2 746.8312 746.8815 0.0503 83364.62 96750.84 6 4 1.93E+7 N.sub.2 (B.sup.3.sub.g - A.sup.3.sup..sub.u) 1.sup.+ -system 750 749.9618 0.0382 Ag | 4d.sup.10(.sup.1S) 5p .sup.2P.sup.0.sub.1/2 - 4d.sup.10(.sup.1S) 768.7772 768.4540 0.3232 29552.061 42556.152 2 2 6s .sup.2S.sub.1/2 O | 3s .sup.5S.sub.2-3p.sup.5P.sub.3 777.1944 776.8659 0.3285 73768.2 86631.454 5 7 3.69E+7 Ag | 4d.sup.10(.sup.1S) 5p .sup.2P.sup.0.sub.3/2 - 4d.sup.10(.sup.1S) 827.3509 827.1320 0.2189 30472.703 42556.152 4 2 6s .sup.2S.sub.1/2 O | 3s .sup.3S.sub.1 - 3p .sup.3P.sub.2 844.6359 844.2905 0.3454 76794.978 88631.146 3 5 3.22E+7 N | 3s .sup.4P.sub.5/2 - 3p .sup.4D.sub.7/2 868.0282 868.2219 0.1937 83364.62 94881.82 6 8 2.46E+7 O | 3p .sup.5P.sub.3 - 3d .sup.5D.sub.4 926.6006 926.3226 0.2780 86631.454 97420.63 7 9 4.45E+7
[0675]
TABLE-US-00051 TABLE 20b meas. tab. meas. tab. En Em Amn Transition (nm) (nm) (nm) (1/cm) (1/cm) gn gm (1/s) NO A.sup.2.sup.+-X.sup.2 -system: (1-0) 214.7 214.7000 0.0000 NO A.sup.2.sup.+-X.sup.2 -system: (0-0) 226.9 226.8300 0.0700 NO A.sup.2.sup.+-X.sup.2 -system: (0-1) 236.3 236.2100 0.0900 NO A.sup.2.sup.+-X.sup.2 -system: (0-2) 247.1 246.9300 0.1700 NO A.sup.2.sup.+-X.sup.2 -system: (0-3) 258.3 258.5300 0.2300 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.8(.sup.1D)6s6p 262.80269 262.8200 0.0173 775.892 38315.908 7 5 4.32E+7 (3P.sup.0) .sup.3F.sup.0.sub.2 Pt | 5d.sup.96s .sup.3D.sub.3 - 5d.sup.96p.sup.3F.sup.0.sub.4 265.94503 265.9000 0.0450 0 37590.569 7 9 8.90E+7 NO A.sup.2.sup.+-X.sup.2: -system: (1-1) 267.1 267.0600 0.0400 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.96p.sup.3D.sup.0.sub.3 270.23995 270.2100 0.0300 775.892 37769.073 5 7 5.23EF7 Pt | 5d.sup.86s.sup.2 3F.sub.4 - 5d.sup.6p.sup.3D.sup.0.sub.3 270.58951 270.5600 0.0295 823.678 37769.073 9 7 3.80EF7 NO A.sup.2.sup.+-X.sup.2: -systern: (0-4) 271 271.1400 0.1400 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.96p.sup.3P.sup.0.sub.2 273.39567 273.3600 0.0357 775.892 37342.101 5 5 6.72E+7 OH A.sup.2-X.sup.2: (1-0) 281.2 281.2000 0.0000 OH A.sup.2-X.sup.2: (1-0) 282 281.9600 0.0400 Pt | 5d.sup.96s .sup.3D.sub.3 - 5d.sup.8(.sup.3F)6s6p(.sup.3P.sup.0) 283.02919 283.0200 0.0092 0 35321.653 7 7 1.68E+7 .sup.5D.sup.0.sub.3 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.8(.sup.3F)6s6p(.sup.3P.sup.0) 289.3863 289.4200 0.0337 775.892 35321.653 5 7 6.47E+6 .sup.5D.sup.0.sub.3 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (4-2) 295.32 295.3300 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (3-1) 296.2 296.1900 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-0) 297.7 297.7000 0.0000 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.96p.sup.3F.sup.0.sub.3 299.79622 299.8600 0.0638 775.892 34122.165 5 7 2.88E+7 Pt | 5d.sup.86s.sup.2 3F.sub.4 - 5d.sup.8(.sup.3F)6s6p(.sup.3P.sup.0) 304.26318 304.3500 0.0868 823.678 33680.402 9 11 7.69E+6 .sup.5D.sup.0.sub.5 OH A.sup.2-X.sup.2: (0-0) 306.537 306.4600 0.0770 OH A.sup.2-X.sup.2: (0-0) 306.776 306.8400 0.0640 OH A.sup.2-X.sup.2: (0-0) 307.844 307.8700 0.0260 OH A.sup.2-X.sup.2: (0-0) 308.986 309.0700 0.0840 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-1) 313.57 313.5800 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-0) 316 315.9200 0.0800 O.sub.2 (B.sup..sub.u-X.sup.3.sup..sub.g) (0-14) 337 337.0800 0.0800 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-0) 337.1 337.1400 0.0400 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-3) 350.05 349.9700 0.0800 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-2) 353.67 353.6400 0.0300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-1) 357.69 357.6500 0.0400 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-0) 358.2 358.2000 0.0000 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-4) 371 370.9500 0.0500 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-3) 375.54 375.4500 0.0900 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-2) 380.49 380.4000 0.0900 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-1) 388.4 388.4200 0.0200 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-0) 391.4 391.3700 0.0300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-4) 399.8 399.7100 0.0900 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-3) 405.94 405.8100 0.1300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (4-8) 409.48 409.4900 0.0100 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (2-3) 419.96 420.0000 0.0400 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-2) 423.65 423.6400 0.0100 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-1) 427.785 427.7700 0.0150 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (3-8) 441.67 441.6200 0.0500 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-3) 465.1 465.1300 0.0300 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-2) 470.9 470.8400 0.0600 Na | 3s .sup.2S.sub.1/2 - 3p .sup.2P.sup.0.sub.3/2 588.99 588.995 0.0050 H | 2p .sup.2P.sub.3/2 - 3d .sup.2D.sub.5/2 656.2852 655.8447 0.4405 82259.287 97492.357 4 6 6.47E+07 N | 3s 4P.sub.5/2 - 3p .sup.4S.sub.3/2 746.8312 746.8815 0.0503 83364.62 96750.84 6 4 1.93E+07 N.sub.2 (B.sup.3.sub.g - A.sup.3.sup..sub.u) 1.sup.+ -system 750 749.9613 0.0332 O | 3s .sup.5S.sub.2-3p.sup.5P.sub.3 777.1944 776.8659 0.3235 73768.2 86631.454 5 7 3.69E+07 O | 3s .sup.3S.sub.1 - 3p .sup.3P.sub.2 844.6359 844.2905 0.3454 76794.978 88631.146 3 5 3.22E+07 N | 3s .sup.4P.sub.5/2 - 3p .sup.4D.sub.7/2 868.0282 868.2219 0.1937 83364.62 94881.82 6 8 2.46E+07 O | 3p .sup.5P.sub.3 - 3d .sup.5D.sub.4 926.6006 926.3226 0.2780 86631.454 97420.63 7 9 4.45E+07
[0676]
TABLE-US-00052 TABLE 20c meas. tab. meas. tab. En Em Amn Transition (nm) (nm) (nm) (1/cm) (1/cm) gn gm (1/s) NO A.sup.2.sup.+-X.sup.2 -system: (1-0) 214.7 214.7000 0.0000 NO A.sup.2.sup.+-X.sup.2 -system: (0-0) 226.9 226.8300 0.0700 NO A.sup.2.sup.+-X.sup.2 -system: (0-1) 236.3 236.2100 0.0900 Au | 5d.sup.106s 2S.sub.1/2 5d.sup.106p .sup.2P.sup.0.sub.3/2 242.795 242.7900 0.0050 0 41174.613 2 4 1.99E+8 NO A.sup.2.sup.+-X.sup.2 -system: (0-2) 247.1 246.9300 0.1700 NO A.sup.2.sup.+-X.sup.2 -system: (0-3) 258.3 2585300 0.2300 NO A.sup.2.sup.+-X.sup.2 -system: (1-1) 267.1 267.0600 0.0400 Au | 5d.sup.106s 2S.sub.1/2 5d.sup.106p .sup.2P.sup.0.sub.1/2 267.595 267.59 0.0050 0 37358.991 2 2 1.64E+8 NO A.sup.2.sup.+-X.sup.2 -system: (0-4) 271 271.1400 0.1400 Au | 5d.sup.96s.sup.2 2D.sub.5/2 5d.sup.9(.sup.2D.sub.5/2)6s6p 274.825 274.82 0.0050 9161.177 45537.195 6 8 .sup.24.sup.0.sub.7/2 OH A.sup.2-X.sup.2 (1-0) 281.2 281.2000 0.0000 OH A.sup.2-X.sup.2 (1-0) 282 281.9600 0.0400 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (4-2) 295.32 295.3300 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (3-1) 296.2 296.1900 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-0) 297.7 297.7000 0.0000 OH A.sup.2-X.sup.2: (0-0) 306.537 306.4600 0.0770 OH A.sup.2-X.sup.2: (0-0) 306.776 306.8400 0.0640 OH A.sup.2-X.sup.2: (0-0) 307.844 307.8700 0.0260 OH A.sup.2-X.sup.2: (0-0) 308.986 309.0700 0.0840 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-1) 313.57 313.5800 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-0) 316 315.9200 0.0800 O.sub.2 (B.sup.3.sup..sub.u-X.sup.3.sup..sub.g) (0-14) 337 337.0800 0.0800 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-0) 337.1 337.1400 0.0400 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-3) 350.05 349.9700 0.0800 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-2) 353.67 353.6400 0.0300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-1) 357.69 357.6500 0.0400 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-0) 358.2 358.2000 0.0000 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-4) 371 370.9500 0.0500 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-3) 375.54 375.4500 0.0900 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-2) 380.49 380.4000 0.0900 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-1) 388.4 388.4200 0.0200 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-0) 391.4 391.3700 0.0300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-4) 399.8 399.7100 0.0900 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-3) 405.94 405.8100 0.1300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (4-8) 409.48 409.4900 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-3) 419.96 420.0000 0.0400 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-2) 423.65 423.6400 0.0100 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-1) 427.785 427.7700 0.0150 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (3-8) 441.67 441.6200 0.0500 Au | 5d.sup.9(.sup.2D.sub.5/2)6s6p .sup.24.sup.0.sub.7/2 .Math. 5d.sup.9(.sup.2D.sub.5/2) 448.8263 448.7500 0.0763 45537.195 67811.329 8 8 6s7s 10.sub.7/2 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-3) 465.1 465.1300 0.0300 N.sub.2+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-2) 470.9 470.8400 0.0600 Na | 3s .sup.2S.sub.1/2 - 3p .sup.2P.sup.0.sub.3/2 588.99 588.995 0.0050 H | 2p .sup.2P.sub.3/2 - 3d .sup.2D.sub.5/2 656.2852 655.8447 0.4405 82259.287 97492.357 4 6 6.47E+7 N | 3s .sup.4P.sub.5/2 - 3p .sup.4S.sub.3/2 746.8312 746.8815 0.0503 83364.62 96750.84 6 4 1.93E+7 N.sub.2 (B.sub.3.sub.g - A3.sup..sub.u) 1.sup.+ - system 750 749.9618 0.0382 O | 3s .sup.5S.sub.2-3p.sup.5P.sub.3 777.1944 776.8659 0.3285 73768.2 86631.454 5 7 3.69E+7 O | 3s .sup.3S.sub.1 - 3p .sup.3P.sub.2 844.6359 844.2905 0.3454 76794.978 88631.146 3 5 3.22E+7 N | 3s .sup.4P.sub.5/2 - 3p .sup.4D.sub.7/2 868.0282 868.2219 0.1937 83364.62 94881.82 6 8 2.46E+7 O | 3p .sup.5P.sub.3 - 3d .sup.5D.sub.4 926.6006 926.3226 0.2780 86631.454 97420.63 7 9 4.45E+7
[0677]
TABLE-US-00053 TABLE 20d meas. tab. meas. tab. En Em Amn Transition (nm) (nm) (nm) (1/cm) (1/cm) gn gm (1/s) NO A.sup.2.sup.+-X.sup.2 -system: (1-0) 214.7 214.7000 0.0000 Pt | 217.46853 217.5100 0.0415 NO A.sup.2.sup.+-X.sup.2 -system: (0-0) 226.9 226.8300 0.0700 NO A.sup.2.sup.+-X.sup.2 -system: (0-1) 236.3 236.2100 0.0900 Pt | 242.804 242.8500 0.0460 Pt | 244.00608 244.0000 0.0061 NO A.sup.2.sup.+-X.sup.2 -system: (0-2) 247.1 246.9300 0.1700 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.8(.sup.3F)6s6p(3P.sup.0).sup.5G.sup.0.sub.3 243.71685 248.7100 0.0068 775.892 40970.165 5 7 Pt | 251.5577 251.5900 0.0323 NO A.sup.2.sup.+-X.sup.2 -system: (0-3) 258.3 258.5300 0.2300 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.8(.sup.1D)6s6p(3P.sup.0).sup.3F.sup.0.sub.2 262.80269 262.8200 0.0173 775.892 38815.908 7 5 4.82E+7 Pt | 264.63804 264.6200 0.0680 Pt | 5d.sup.96s .sup.3D.sub.3 - 5d.sup.96p.sup.3F.sup.0.sub.4 265.94503 265.9000 0.0450 0 37590.569 7 9 8.90E+7 NO A.sup.2.sup.+-X.sup.2 -system: (1-1) 267.1 267.0600 0.0400 Pt | 267.71477 267.6500 0.0648 Pt 5d.sup.96s .sup.1D.sub.2 - 5d.sup.96p.sup.3D.sup.0.sub.3 270.23995 270.2100 0.0300 775.892 37769.073 5 7 5.23E+7 Pt | 5d.sup.86s.sup.2 3F.sub.4 - 5d.sup.96p.sup.3D.sup.0.sub.3 270.58951 270.5600 0.0295 823.678 37769.073 9 7 3.80E+7 NO A.sup.2.sup.+-X.sup.2 -system: (0-4) 271 271.1400 0.1400 Pt | 271.90333 271.9000 0.0033 Pt || 5d.sup.8(.sup.3F.sub.3)6p.sub.1/2 (3, 1/2).sup.0 - 5d.sup.8(.sup.1D) 271.95239 271.9000 0.0524 64757.343 101517.59 6 4 7s .sup.2D.sub.3/2 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.96p.sup.3P.sup.0.sub.2 273.39567 273.3600 0.0357 775.892 37342.101 5 5 6.72E+7 Pt | 275.38531 275.4600 0.0747 Pt | 277.16594 277.2200 0.0541 OH A.sup.2-X.sup.2 (1-0) 281.2 281.2600 0.0600 OH A.sup.2-X.sup.2 (1-0) 282 281.9600 0.0400 Pt | 5d.sup.96s .sup.3D.sub.3 - 5d.sup.8(.sup.3F)6s6p(.sup.3P.sup.0).sup.5D.sup.0.sub.3 283.02919 283.0200 0.0092 0 35321.653 7 7 1.68E+7 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.8(.sup.3F)6s6p(.sup.3P.sup.0).sup.5D.sup.0.sub.3 289.3863 239.4200 0.0337 775.392 35321.653 5 7 6.47E+6 Pt | 5d.sup.96s .sup.3D.sub.3 - 5d.sup.96p.sup.3F.sup.0.sub.3 292.97894 293.0700 0.0911 0 34122.165 7 7 1.85E+7 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (4-2) 295.32 295.3300 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (3-1) 296.2 296.1900 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-0) 297.7 297.7000 0.0000 Pt | 5d.sup.96s .sup.1D.sub.2 - 5d.sup.96p.sup.3F.sup.0.sub.3 299.79622 299.8600 0.0638 775.892 34122.165 5 7 2.88E+7 Pt | 5d.sup.86s.sup.2 3F.sub.4 - 5d.sup.8(.sup.3F)6s6p(.sup.3P.sup.0).sup.5F.sup.0.sub.5 304.26318 304.3500 0.0868 823.678 33680.402 9 11 7.69E+6 OH A.sup.2-X.sup.2: (0-0) 306.537 306.4600 0.0770 OH A.sup.2-X.sup.2: (0-0) 306.776 306.8400 0.0640 OH A.sup.2-X.sup.2: (0-0) 307.844 307.8700 0.0260 OH A.sup.2-X.sup.2: (0-0) 308.986 309.0700 0.0840 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-1) 313.57 313.5800 0.0100 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-0) 316 315.9200 0.0800 O.sub.2 (B.sup.3.sup..sub.u-X.sup.3.sup..sub.g) (0-14) 337 337.0800 0.0600 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-0) 337.1 337.1400 0.0400 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-3) 350.05 349.9700 0.0800 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-2) 353.67 353.6400 0.0300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-1) 357.69 357.6500 0.0400 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-0) 358.2 358.2000 0.0000 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (2-4) 371 370.9500 0.0500 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-3) 375.54 375.4500 0.090 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-2) 380.49 380.4000 0.0900 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-1) 388.4 388.4200 0.0200 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-0) 391.4 391.3700 0.0300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (1-4) 399.8 399.7100 0.0900 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (0-3) 405.94 405.8100 0.1300 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (4-8) 409.48 4094900 0.0100 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (2-3) 419.96 420.0000 0.0400 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-2) 423.65 423.6400 0.0100 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-1) 427.785 427.7700 0.0150 N.sub.2 (C.sup.3.sub.u-B.sup.3.sub.g) 2.sup.+-system (3-8) 441.67 441.6200 0.0500 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (1-3) 465.1 465.1300 0.0300 N.sub.2.sup.+ (B.sup.2.sup.+.sub.u-X.sup.2+.sub.g) 1.sup.-system (0-2) 470.9 470.8400 0.0600 Na | 3s .sup.2S.sub.1/2 - 3p .sup.2P.sup.0.sub.3/2 588.99 588.995 0.0050 H | 2p .sup.2P.sub.3/2 - 3d .sup.2D.sub.5/2 656.2852 655.8447 0.4405 82259.287 97492.357 4 6 6.47E+7 N | 3s .sup.4P.sub.5/2 - 3p .sup.4S.sub.3/2 746.8312 746.8815 0.0503 83364.62 96750.84 6 4 1.93E+7 N.sub.2 (B.sub.3.sub.g A3.sup..sub.u) 1.sup.+-system 750 749.9618 0.0382 O | 3s .sup.5S.sub.2-3p.sup.5P.sub.3 777.1944 776.8659 0.3285 73768.2 86631.454 5 7 3.69E+7 O | 3s .sup.3S.sub.1 - 3p .sup.3P.sub.2 844.6359 844.2905 0.3454 76794.973 88631.146 3 5 3.22E+7 N | 3s .sup.4P.sub.5/2 - 3p .sup.4D.sub.7/2 863.0282 868.2219 0.1937 83364.62 94881.82 6 8 2.46E+7 O | 3p .sup.5P.sub.3 - 3d .sup.5D.sub.4 926.6006 926.3226 0.2780 86631.454 97420.63 7 9 4.45E+7
[0678] A variety of similar species associated with each metallic electrode composition plasma are identified in Tables 20a-20d. These species include, for example, the various metal(s) from the electrodes 1, as well as common species including, NO, OH, N.sub.2, etc. Itis interesting to note that some species' existence and/or intensity (e.g., amount) is a function of location within the adjustable plasma. Accordingly, this suggests that various species can be caused to occur as a function of a variety of processing conditions (e.g., power, location, composition of electrode 1, etc.) of the invention.
[0679]
[0680] Moreover, the plasma electron temperatures (see
Ag I4d.sup.10(.sup.1S) 5 s.sup.2S.sub.1/24d.sup.10(.sup.1S) 5p.sup.2p.sup.0.sub.3/2
Ag I4d.sup.10(.sup.1S) 5 s.sup.2S.sub.1/24d.sup.10(.sup.1S) 5p.sup.2P.sup.0.sub.1/2
Ag I 4d.sup.10(.sup.1S) 5p.sup.2P.sup.0.sub.1/2-4d.sup.10(.sup.1S) 5d.sup.2D.sub.3/2
Ag I 4d.sup.10(.sup.1S) 5p.sup.2P.sup.0.sub.3/24d.sup.10(.sup.1S) 5d.sup.2D.sub.5/2
[0681] Spectral line intensities used in all temperature measurements are given in units of spectral irradiance (mW/m.sup.2/nm) after the irradiance calibration of the spectrometers was performed.
[0682]
[0683]
REFERENCES
[0684] [1] Hans R. Griem, Principles ofPlasma SSectroscopy, Cambridge Univ. Press (1996). [0685] [2] Charles de Izarra, J. Phys. D: Appl. Phys. 33 (2000) 1697-1704.
Example 17
Comparison of Zeta Potential of Silver-Based Nanoparticles/Nanoparticle Solutions by Adding Variable Zinc Nanoparticles/Nanoparticle Solutions
[0686] The materials disclosed in Examples 11 and 12, namely, AT-060 and BT-06, were mixed together in varying proportions to form several different solutions to determine if any differences in zeta potential could be observed as a function of volumetric proportions in the various mixtures.
[0687] In this Example, a Zeta-Sizer Nano-ZS produced by Malvern Instruments was utilized to determine the zeta potential of each solution. For each measurement, a 1 ml sample was filled into clear disposable zeta cell DTS1060C. Dispersion Technology Software, version 5.10 was used to run the Zeta-Sizer and to calculate the zeta potential. The following settings were used: dispersant water, temperature25 C., viscosity0.8872 cP, refraction index1.330, dielectric constant78.5, approximation modelSmoluchowski. One run of hundred repetitions was performed for each sample.
[0688] Zeta potential is known as a measure of the electo-kinetic potential in colloidal systems. Zeta potential is also referred to as surface charge on particles. Zeta potential is also known as the potential difference that exists between the stationary layer of fluid and the fluid within which the particle is dispersed. A zeta potential is often measured in millivolts (i.e., mV). The zeta potential value of approximately 25 mV is an arbitrary value that has been chosen to determine whether or not stability exists between a dispersed particle in a dispersion medium. Thus, when reference is made herein to zeta potential, it should be understood that the zeta potential referred to is a description or quantification of the magnitude of the electrical charge present at the double layer.
[0689] The zeta potential is calculated from the electrophoretic mobility by the Henry equation:
where z is the zeta potential, U.sub.E is the electrophoretic mobility, E is a dielectric constant, is a viscosity, (ka) is Henry's function. For Smoluchowski approximation (ka)=1.5.
[0690] Electrophoretic mobility is obtained by measuring the velocity of the particles in applied electric field using Laser Doppler Velocimetry (LDV). In LDV the incident laser beam is focused on a particle suspension inside a folded capillary cell and the light scattered from the particles is combined with the reference beam. This produces a fluctuating intensity signal where the rate of fluctuation is proportional to the speed of the particles, i.e. electrophoretic mobility.
[0691] As Table 21a below indicates, AT-060, BT-06 and DI water were mixed in different proportions and the zeta potential was measured right after mixing and one day after mixing. The results for zeta potential are shown in the table below. A clear trend exists for zeta potential of Ag:Zn 4:0 (28.9) to Ag:Zn 0:4 (+22.7).
TABLE-US-00054 TABLE 21a Zeta Composition of Potential (mV) Sample Sample (ml) Concentration After DI (ppm) Freshly One ID AT060 BT06 Water Ag Zn Mixed Day Ag:Zn 4:0 2 0 2 20 0 28.9 n/a Ag:Zn 4:1 2 0.5 1.5 20 3 16.7 22.5 Ag:Zn 4:2 2 1 1 20 6 13.9 18.1 Ag:Zn 4:3 2 1.5 0.5 20 9 12.4 11.4 Ag:Zn 4:4 2 2 0 20 12 12.4 10.3 Ag:Zn 0:4 0 2 2 0 12 +22.7 n/a
[0692] As a comparison, zinc sulfate heptahydrate (ZnSO.sub.47H.sub.2O) having a formula weight of 287.58 was added in varying quantities to the AT-060 solution to determine if a similar trend in zeta potential change could be observed for different amounts of zinc sulfate being added. The zinc sulfate heptahydrate was obtained from Fisher Scientific, had a Product # of Z68-500, a Cas # of 7446-20-0 and a Lot # of 082764. After mixing, the zeta potential of the AT-060/ZnSO.sub.47H.sub.2O mixture was measured. The data were very mixed and no clear trends in changes in zeta potential were evident.
Example 18
Biological Efficacy of Various Solutions Against Bacteria and Fungi
[0693] The biological efficacy of seven different solutions made according to the inventive teachings herein, were tested for efficacy against a variety of bacteria and fungi.
[0694] The biological efficacy measurements made in Example 18 are different from those discussed earlier herein (e.g., the biological characterization discussed relative to Examples 1-5). Specifically, MIC/MID 50 levels were determined for each of the seven different solutions. The clinical and laboratory standards institute Broth Microdilution Methodology was employed, however, the growth medium used was an RPMI medium.
[0695] Additionally, the methods for dilution and antimicrobial susceptibility tests for bacteria that grow aerobically were also followed with the noted exception of testing with alternative media (CLSI document M7A7, CLSI, Wayne, Pa.).
[0696] The seven different solutions tested for efficacy were GR-05, GR-08, GR-21, GR-01, GR-24, GR-25 and GR-26. The solutions GR-05, GR-08 and GR-01 were previously discussed herein in conjunction with Examples 1-5. The solutions GR-24, GR-25 and GR-26 correspond to different mixtures of the same components used to form GR-05. In this regard, the volumetric proportions of GR-24 were 40% Ag/60% Zn; the volumetric proportions for GR-25 were 50% Ag/50% Zn; and the volumetric proportions for GR-26 were 60% Ag/40% Zn. Solution GR-21 corresponded to GR-08 for its Ag solution, but the Zn solution was replaced with an equivalent amount of solution PT001 made in accordance with the teachings in Example 11.
[0697] Table 22a shows results of the seven different solutions against a variety of bacteria. Under the column, Isolate identification beginning with either GP or GN occur. The GP corresponds to Gram-Positive bacteria and the GN corresponds to Gram Negative bacteria. Each of the organisms are specifically listed after the isolate identification. Table 22b shows the same testing results, but reported in a different way.
TABLE-US-00055 TABLE 22a MID/MIC mg/L Isolate Organism GR-05 GR-05 GR-08 GR-08 GP01 Staphylococcus aureus ATCC 29213-antibiotic-susceptible 1/64 1/32 1/32 1/32 control strain GP02 Staphylococcus aureus ATCC 25923-antibiotic-susceptible 1/64 1/64 1/64 1/64 control strain GP03 Staphylococcus aureus ATCC 43300-methicillin-resistant control strain 1/64 1/64 1/32 1/32 GP04 Staphylococcus aureus-methicillin-resistant clinical isolate 1/64 1/64 1/32 1/32 GP05 Staphylococcus aureus-multi-drug-resistant clinical isolate 1/64 1/64 1/32 1/32 GP06 Staphylococcus aureus-teicoplanin-intermediate clinical isolate 1/32 1/64 1/32 1/32 GP07 Staphylococcus epidermidis antibiotic susceptible clinical isolate 1/64 1/64 1/32 1/32 GP08 Staphylococcus epidermidis methicillin-resistant clinical isolate 1/64 1/64 1/32 1/32 GP09 Staphylococcus haemolyticus-antibiotic susceptible clinical isolate 1/64 1/64 1/64 1/64 GP10 Staphylococcus saprophyticus-antibiotic susceptible clinical isolate 1/64 1/64 1/32 1/32 GP11 Enterococcus faecalis-ATCC 29212 antibiotic-susceptible control strain 1/32 1/32 1/32 1/32 GP12 Enterococcus faecalis vancomycin-susceptible clinical isolate 1/32 1/32 1/32 1/32 GP13 Enterococcus faecalis vancomycin-resistant (VanA) clinical isolate ** GP14 Enterococcus faecalis vancomycin-resistant (VanB) clinical isolate ** GP15 Enterococcus faecalis high-level gentamicin-resistant clinical isolate ** GP16 Enterococcus faecium vancomycin-susceptible clinical isolate 1/32 1/32 1/32 1/32 GP17 Enterococcus faecium vancomycin-resistant (VanA) clinical isolate 1/64 1/64 1/32 1/64 GP18 Enterococcus faecium vancomycin-resistant (VanB) clinical isolate 1/64 1/64 1/64 1/64 GP19 Enterococcus gallinarum vancomycin-resistant (VanC) clinical isolate 1/16 1/16 1/16 1/16 GP20 Streptococcus pneumoniae-ATCC 49619 1/32 1/32 1/16 1/16 antibiotic-susceptible control strain GP21 Streptococcus pneumoniae-pencillin-susceptible clinical isolate 1/32 1/32 1/16 1/16 GP22 Streptococcus pneumoniae-penicillin-intermediate clinical isolate 1/32 1/32 1/16 1/32 GP23 Streptococcus pneumoniae -penicillin-resistant clinical isolate 1/32 1/32 1/32 1/32 GP24 Streptococcus pneumoniae -multi-drug resistant clinical isolate 1/32 1/32 1/16 1/32 GP25 Streptococcus pyogenes-antibiotic-susceptible clinical isolate @@ GP26 Streptococcus pyogenes-Macrolide (MLS) resistant clinical isolate 1/32 1/32 1/16 1/16 GP27 Streptococcus pyogenes-Macrolide (M-type) resistance clinical isolate :: GP28 Corynebacterium jeikeium-antibiotic-susceptible clinical isolate :: GP29 Corynebacterium jeikeium-multi-drug resistant clinical isolate :: GP30 Listeria monocytogenes-antibiotic-susceptible clinical isolate 1/32 1/32 1/32 1/32 GP31 MU50 Staphylococcus aureus (MRSA)-VISA type strain 1/64 1/64 1/64 1/64 GP32 EMRSA3 Staphylococcus aureus (MRSA)-SSCmec type 1 1/64 1/64 1/64 164 GP33 EMRSA16 Staphylococcus aureus (MRSA)-SSCmec type 2 1/64 1/64 1/64 1/64 GP34 EMRSA1 Staphylococcus aureus (MRSA)-SSCmec type 3 1/64 1/64 1/32 1/32 GP35 EMRSA15 Staphylococcus aureus (MRSA)-SSCmec type 4 1/64 1/64 1/32 1/32 GP36 HT2001254 Staphylococcus aureus (MRSA)-PVL positive 1/64 1/64 1/32 1/32 GP37 Streptococcus agalactiae-antibiotic-susceptible clinical isolate GP38 Streptococcus agalactiae-macrolide-resistant clinical isolate GP39 Group C Streptococcus-antibiotic-susceptible clinical isolate 1/32 1/32 1/16 1/16 GP55 Group C Streptococcus -antibiotic-resistant clinical isolate 1/32 1/32 1/16 1/16 GP41 Group G Streptococcus-antibiotic-susceptible clinical isolate 1/16 1/16 1/16 1/16 GP42 Group G Streptococcus-macrolide-resistant clinical isolate 1/16 1/32 1/16 1/32 GP43 Streptococcus mitis-antibiotic-susceptible clinical isolate :: GP44 Streptococcus mitis-macrolide-resistant clinical isolate 1/32 1/32 1/16 1/32 GP45 Streptococcus constellatus-antibiotic-susceptible clinical isolate :: GP46 Streptococcus constellatus-macrolide-resistant clinical isolate :: GP47 Streptococcus oralis-antibiotic-susceptible clinical isolate 1/16 1/16 1/16 1/32 GP48 Streptococcus oralis-macrolide-resistant clinical isolate 1/16 1/32 1/16 1/16 GP49 Streptococcus bovis-antibiotic-susceptible clinical isolate 1/32 1/64 1/32 1/32 GP50 Streptococcus bovis-macrolide-resistant clinical isolate 1/64 1/64 1/32 1/32 GP51 Streptococcus sanguis-antibiotic-susceptible clinical isolate 1/32 1/32 1/32 1/32 GP52 Streptococcus sanguis-macrolide-resistant clinical isolate 1/32 1/32 1/32 1/32 GP53 Clostridium perfringens-antibiotic-susceptible clinical isolate ## 1/32 1/32 1/16 1/16 GN01 Escherichia coli ATCC25922-antibiotic-susceptible type strain 1/64 1/64 1/64 1/64 GN02 Escherichia coli ATCC35218--lactamase positive type strain 1/64 1/64 1/16 1/32 GN03 Escherichia coli-multi-drug resistant clinical isolate 1/32 1/32 1/32 1/16 GN04 Klebsiella aerogenes NCTC11228-antibiotic-susceptible type strain 1/32 1/32 1/16 GN05 Klebsiella aerogenes-multi-drug resistant clinical isolate 1/64 1/64 1/16 1/16 GN06 Enterobacter sp-antibiotic-susceptible clinical isolate 1/16 1/16 1/16 GN07 Enterobacter sp-multi-drug resistant clinical isolate 1/32 1/32 1/16 1/16 GN08 Serratia marcescens-antibiotic-susceptible clinical isolate 1/32 1/32 1/32 1/16 GN09 Serratia marcescens-multi-drug resistant clinical isolate 1/32 1/32 1/16 1/16 GN10 Pseudomonas aeruginosa ATCC27853-antibiotic-susceptible 1/64 1/64 1/64 1/64 type strain GN11 Pseudomonas aeruginosa-multi-drug resistant clinical isolate 1/128 1/128 1/64 164 GN12 Stenotrophomonas maltophilia-antibiotic-susceptible clinical isolate 1/256 1/256 1/128 1/128 GN13 Stenotrophomonas maltophila-antibiotic-resistant clinical isolate 1/64 1/64 1/64 1/64 GN14 Burkholderia cepacia-antibiotic-susceptible clinical isolate 1/64 1/64 1/64 1/64 GN15 Proteus mirabilis-antibiotic-susceptible clinical isolate 1/64 1/64 1/32 1/16 GN16 Proteus mirabilis-multi-drug resistant clinical isolate 1/32 1/32 1/16 1/16 GN17 Salmonella sp-antibiotic-susceptible clinical isolate 1/64 1/32 1/32 1/64 GN18 Salmonella sp-multi-drug resistant clinical isolate 1/64 1/64 1/32 1/32 GN19 Shigella sp-antibiotic-susceptible clinical isolate 1/64 1/64 1/64 1/64 GN20 Shigella sp-multi-drug resistant clinical isolate 1/128 1/128 1/64 1/64 GN21 Morganella morganii-antibiotic-susceptible clinical isolate {circumflex over ()}{circumflex over ()} GN22 Morganella morganii-multi-drug resistant clinical isolate ** 1/64 1/64 1/16 1/16 GN23 Providencia stuartii-antibiotic-susceptible clinical isolate 1/32 1/64 1/32 1/32 GN24 Providencia stuartii-multi-drug resistant clinical isolate ** 1/64 1/64 1/32 1/32 GN25 Neisseria meningitidis-antibiotic-susceptible clinical isolate susceptible && GN26 Haemophilus influenzae -lactamase negative clinical isolate ++ GN27 Haemophilus influenzae -lactamase positive clinical isolate ++ GN28 Haemophilus influenzae -lactamase negative ampicillin-resistant clinical isolate ++ GN29 Moraxella catarrhalis p-lactamase positive clinical isolate 1/64 1/64 1/64 1/64 GN30 Moraxella catarrhalis-lactamase positive clinical isolate 1/64 1/64 1/64 1/64 GN31 Acinetobacter baumanii-antibiotic-susceptible clinical isolate ** 1/128 1/128 1/64 1/64 GN32 Acinetobacter baumanii-multi-drug resistant clinical isolate ** 1/128 1/128 1/64 1/64 GN33 Bacteroides fragilis-antibiotic-susceptible clinical isolate ## 1/32 1/32 1/16 1/16 P8096038 Citrobacter freundii-antibiotic-susceptible clinical isolate 1/64 1/64 1/32 1/32 P8119035 Citrobacter freundii-resistant clinical isolate 1/32 1/32 1/16 1/32 CD01 Clostridium difficile == CD02 Clostridium difficile == CD03 Clostridium difficile == CD04 Clostridium difficile == CD05 Clostridium difficile == CD06 Clostridium difficile == CD07 Clostridium difficile == CD08 Clostridium difficile == CD09 Clostridium difficile == CD10 Clostridium difficile == 14 MID/MIC mg/L Isolate Organism GR-21 GR-21 GR-01 GR-01 GP01 Staphylococcus aureus ATCC 29213-antibiotic-susceptible 1/32 1/32 1/64 1/64 control strain GP02 Staphylococcus aureus ATCC 25923-antibiotic-susceptible 1/64 1/64 1/64 1/64 control strain GP03 Staphylococcus aureus ATCC 43300-methicillin-resistant control strain 1/32 1/32 1/64 1/64 GP04 Staphylococcus aureus-methicillin-resistant clinical isolate 1/32 1/64 1/64 1/64 GP05 Staphylococcus aureus-multi-drug-resistant clinical isolate 1/32 1/32 1/64 1/64 GP06 Staphylococcus aureus-teicoplanin-intermediate clinical isolate 1/32 1/32 1/64 1/64 GP07 Staphylococcus epidermidis antibiotic susceptible clinical isolate 1/32 1/32 1/64 1/64 GP08 Staphylococcus epidermidis methicillin-resistant clinical isolate 1/64 1/64 1/64 1/64 GP09 Staphylococcus haemolyticus-antibiotic susceptible clinical isolate 1/64 1/64 1/64 1/64 GP10 Staphylococcus saprophyticus-antibiotic susceptible clinical isolate 1/32 1/32 1/64 1/64 GP11 Enterococcus faecalis-ATCC 29212 antibiotic-susceptible 1/32 1/32 1/64 1/64 control strain GP12 Enterococcus faecalis vancomycin-susceptible clinical isolate 1/32 1/32 1/64 1/64 GP13 Enterococcus faecalis vancomycin-resistant VanA) clinical isolate ** GP14 Enterococcus faecalis vancomycin-resistant (VanB) clinical isolate ** GP15 Enterococcus faecalis high-level gentamicin-resistant clinical isolate ** GP16 Enterococcus faecium vancomycin-susceptible clinical isolate 1/32 1/32 1/64 1/64 GP17 Enterococcus faecium vancomycin-resistant VanA clinical isolate 1/64 1/64 1/64 1/64 GP18 Enterococcus faecium vancomycin-resistant (VanB) clinical isolate 1/64 1/64 1/128 1/64 GP19 Enterococcus gallinarum vancomycin-resistant (VanC) clinical isolate 1/16 1/16 1/32 1/32 GP20 Streptococcus pneumoniae-ATCC 49619 1/16 1/16 1/32 1/32 antibiotic-susceptible control strain GP21 Streptococcus pneumoniae-pencillin-susceptible clinical isolate 1/16 1/16 1/32 1/32 GP22 Streptococcus pneumoniae-penicillin-intermediate clinical isolate 1/32 1/32 1/32 1/32 GP23 Streptococcus pneumoniae-penicillin-resistant clinical isolate 1/16 1/16 1/32 1/32 GP24 Streptococcus pneumoniae-multi-drug resistant clinical isolate 1/16 1/16 1/32 1/32 GP25 Streptococcus pyogenes-antibiotic-susceptible clinical isolate @@ GP26 Streptococcus pyogenes-Macrolide (MLS) resistant clinical isolate 1/16 1/16 1/32 1/32 GP27 Streptococcus pyogenes-Macrolide (M-type) resistance clinical isolate :: GP28 Corynebacterium jeikeium-antibiotic-susceptible clinical isolate :: GP29 Corynebacterium jeikeium-multi-drug resistant clinical isolate :: GP30 Listeria monocytogenes-antibiotic-susceptible clinical isolate 1/32 1/32 1/64 1/64 GP31 MU50 Staphylococcus aureus (MRSA)-VISA type strain 1/64 1/64 1/64 1/64 GP32 EMRSA3 Staphylococcus aureus (MRSA)-SSCmec type 1 1/64 1/64 1/64 1/64 GP33 EMRSA16 Staphylococcus aureus (MRSA)-SSCmec type 2 1/64 1/64 1/128 1/64 GP34 EMRSA1 Staphylococcus aureus (MRSA)-SSCmec type 3 1/32 1/32 1/64 1/64 GP35 EMRSA15 Staphylococcus aureus (MRSA)-SSCmec type 4 1/32 1/32 1/64 1/64 GP36 HT2001254 Staphylococcus aureus (MRSA)-PVL positive 1/32 1/32 1/64 1/64 GP37 Streptococcus agalactiae-antibiotic-susceptible clinical isolate 1/32 1/32 GP38 Streptococcus agalactiae-macrolide-resistant clinical isolate 1/32 1/32 1/32 1/32 GP39 Group C Streptococcus-antibiotic-susceptible clinical isolate 1/16 1/16 1/32 1/32 GP55 Group C Streptococcus-antibiotic-resistant clinical isolate 1/16 1/16 1/32 1/32 GP41 Group G Streptococcus-antibiotic-susceptible clinical isolate 1/16 1/16 1/16 GP42 Group G Streptococcus-macrolide-resistant clinical isolate 1/16 1/16 1/32 1/32 GP43 Streptococcus mitis-antibiotic-susceptible clinical isolate :: GP44 Streptococcus mitis-macrolide-resistant clinical isolate 1/16 1/16 1/32 1/32 GP45 Streptococcus constellatus-antibiotic-susceptible clinical isolate :: GP46 Streptococcus constellatus-macrolide-resistant clinical isolate :: GP47 Streptococcus oralis-antibiotic-susceptible clinical isolate 1/16 1/32 1/16 GP48 Streptococcus oralis-macrolide-resistant clinical isolate 1/16 1/16 1/16 1/32 GP49 Streptococcus bovis-antibiotic-susceptible clinical isolate 1/32 1/32 1/64 1/64 GP50 Streptococcus bovis-macrolide-resistant clinical isolate 1/32 1/32 1/64 1/64 GP51 Streptococcus sanguis-antibiotic-susceptible clinical isolate 1/16 1/16 1/32 1/32 GP52 Streptococcus sanguis-macrolide-resistant clinical isolate 1/16 1/32 1/64 1/64 GP53 Clostridium perfringens-antibiotic-susceptible clinical isolate ## 1/16 1/16 1/32 1/32 GN01 Escherichia coli ATCC25922-antibiotic-susceptible type strain 1/32 1/64 1/64 1/64 GN02 Escherichia coli ATCC35218--lactamase positive type strain 1/16 1/32 1/16 1/16 GN03 Escherichia coli-multi-drug resistant clinical isolate 1/32 1/16 1/64 1/64 GN04 Klebsiella aerogenes NCTC11228-antibiotic-susceptible type strain 1/32 1/16 GN05 Klebsiella aerogenes-multi-drug resistant clinical isolate 1/16 1/16 GN06 Enterobacter sp-antibiotic-susceptible clinical isolate 1/16 1/16 GN07 Enterobacter sp-multi-drug resistant clinical isolate 1/16 1/16 1/16 GN08 Serratia marcescens-antibiotic-susceptible clinical isolate 1/16 1/16 1/32 1/16 GN09 Serratia marcescens-multi-drug resistant clinical isolate 1/32 1/32 1/64 1/32 GN10 Pseudomonas aeruginosa ATCC27853-antibiotic-susceptible 1/64 1/64 1/64 1/64 type strain GN11 Pseudomonas aeruginosa-multi-drug resistant clinical isolate 1/64 1/64 1/128 1/128 GN12 Stenotrophomonas maltophilia-antibiotic-susceptible clinical isolate 1/128 1/128 1/256 1/256 GN13 Stenotrophomonas maltophila-antibiotic-resistant clinical isolate 1/64 1/64 1/128 1/128 GN14 Burkholderia cepacia-antibiotic-susceptible clinical isolate 1/64 1/64 1/128 1/128 GN15 Proteus mirabilis-antibiotic-susceptible clinical isolate 1/16 1/32 1/64 1/64 GN16 Proteus mirabilis-multi-drug resistant clinical isolate 1/16 1/16 GN17 Salmonella sp-antibiotic-susceptible clinical isolate 1/32 1/16 1/64 1/32 GN18 Salmonella sp-multi-drug resistant clinical isolate 1/32 1/16 1/64 1/32 GN19 Shigella sp-antibiotic-susceptible clinical isolate 1/64 1/64 1/128 1/128 GN20 Shigella sp-multi-drug resistant clinical isolate 1/64 1/64 1/128 1/128 GN21 Morganella morganii-antibiotic-susceptible clinical isolate {circumflex over ()}{circumflex over ()} GN22 Morganella morganii-multi-drug resistant clinical isolate ** 1/16 1/16 1/32 1/32 GN23 Providencia stuartii-antibiotic-susceptible clinical isolate 1/32 1/32 1/64 1/64 GN24 Providencia stuartii-multi-drug resistant clinical isolate ** 1/32 1/32 1/64 1/64 GN25 Neisseria meningitidis-antibiotic-susceptible clinical isolate susceptible && GN26 Haemophilus influenzae -lactamase negative clinical isolate ++ GN27 Haemophilus influenzae -lactamase positive clinical isolate ++ GN28 Haemophilus influenzae -lactamase negative ampicillin-resistant clinical isolate ++ GN29 Moraxella catarrhalis -lactamase positive clinical isolate 1/64 1/64 1/128 1/128 GN30 Moraxella catarrhalis -lactamase positive clinical isolate 1/64 1/64 1/128 1/128 GN31 Acinetobacter baumanii-antibiotic-susceptible clinical isolate ** 1/64 1/64 1/128 1/128 GN32 Acinetobacter baumanii-multi-drug resistant clinical isolate ** 1/64 1/64 1/128 1/128 GN33 Bacteroides fragilis-antibiotic-susceptible clinical isolate ## 1/32 1/32 1/32 1/64 P8096038 Citrobacter freundii-antibiotic-susceptible clinical isolate 1/32 1/32 1/64 1/32 P8119035 Citrobacter freundii-resistant clinical isolate 1/32 1/16 1/64 1/32 CD01 Clostridium difficile == CD02 Clostridium difficile == CD03 Clostridium difficile == CD04 Clostridium difficile == CD05 Clostridium difficile == CD06 Clostridium difficile == CD07 Clostridium difficile == CD08 Clostridium difficile == CD09 Clostridium difficile == CD10 Clostridium difficile == MID/MIC mg/L Levo- Isolate Organism GR-26 GR-26 floxacin GP01 Staphylococcus aureus ATCC 29213-antibiotic-susceptible 1/128 1/128 0.12 control strain GP02 Staphylococcus aureus ATCC 25923-antibiotic-susceptible 1/128 1/128 0.12 control strain GP03 Staphylococcus aureus ATCC 43300-methicillin-resistant control strain 1/128 1/128 0.12 GP04 Staphylococcus aureus-methicillin-resistant clinical isolate 1/128 1/128 0.12 GP05 Staphylococcus aureus-multi-drug-resistant clinical isolate 1/128 1/128 4 GP06 Staphylococcus aureus-teicoplanin-intermediate clinical isolate 1/128 1/128 4 GP07 Staphylococcus epidermidis antibiotic susceptible clinical isolate 1/128 1/128 0.12 GP08 Staphylococcus epidermidis methicillin-resistant clinical isolate 1/128 1/128 0.25 GP09 Staphylococcus haemolyticus-antibiotic susceptible clinical isolate 1/128 1/128 0.5 GP10 Staphylococcus saprophyticus-antibiotic susceptible clinical isolate 1/64 1/128 0.5 GP11 Enterococcus faecalis-ATCC 29212 antibiotic-susceptible 1/64 1/64 2 control strain GP12 Enterococcus faecalis vancomycin-susceptible clinical isolate 1/64 1/64 4 GP13 Enterococcus faecalis vancomycin-resistant (VanA) clinical isolate ** GP14 Enterococcus faecalis vancomycin-resistant (VanB) clinical isolate ** GP15 Enterococcus faecalis high-level gentamicin-resistant clinical isolate ** GP16 Enterococcus faecium vancomycin-susceptible clinical isolate 1/64 1/64 >8 GP17 Enterococcus faecium vancomycin-resistant (VanA) clinical isolate 1/128 1/128 >8 GP18 Enterococcus faecium vancomycin-resistant (VanB) clinical isolate 1/256 1/256 4 GP19 Enterococcus gallinarum vancomycin-resistant Nan) clinical isolate 1/32 1/32 2 GP20 Streptococcus pneumoniae-ATCC 49619 1/64 1/64 1 antibiotic-susceptible control strain GP21 Streptococcus pneumoniae-pencillin-susceptible clinical isolate 1/64 1/64 1 GP22 Streptococcus pneumoniae-penicillin-intermediate clinical isolate 1/64 1/64 0.5 GP23 Streptococcus pneumoniae-penicillin-resistant clinical isolate 1/64 1/64 0.5 GP24 Streptococcus pneumoniae-multi-drug resistant clinical isolate 1/64 1/64 0.5 GP25 Streptococcus pyogenes-antibiotic-susceptible clinical isolate @@ GP26 Streptococcus pyogenes-Macrolide (MLS) resistant clinical isolate 1/64 1/64 0.5 GP27 Streptococcus pyogenes-Macrolide (M-type) resistance clinical isolate :: GP28 Corynebacterium jeikeium-antibiotic-susceptible clinical isolate :: GP29 Corynebacterium jeikeium-multi-drug resistant clinical isolate :: GP30 Listeria monocytogenes-antibiotic-susceptible clinical isolate 1/64 1/64 0.5 GP31 MU50 Staphylococcus aureus (MRSA)-VISA type strain 1/128 1/128 8 GP32 EMRSA3 Staphylococcus aureus (MRSA)-SSCmec type 1 1/128 1/64 0.06 GP33 EMRSA16 Staphylococcus aureus (MRSA)-SSCmec type 2 1/128 1/64 >8 GP34 EMRSA1 Staphylococcus aureus (MRSA)-SSCmec type 3 1/64 1/128 0.12 GP35 EMRSA15 Staphylococcus aureus (MRSA)-SSCmec type 4 1/64 1/128 0.06 GP36 HT2001254 Staphylococcus aureus (MRSA)-PVL positive 1/64 1/64 0.12 GP37 Streptococcus agalactiae-antibiotic-susceptible clinical isolate 1/64 1/64 1 GP38 Streptococcus agalactiae-macrolide-resistant clinical isolate 1/64 1/64 1 GP39 Group C Streptococcus-antibiotic-susceptible clinical isolate 1/32 1/32 0.5 GP55 Group C Streptococcus-antibiotic-resistant clinical isolate 1/32 1/32 0.5 GP41 Group G Streptococcus-antibiotic-susceptible clinical isolate 1/32 1/32 0.25 GP42 Group G Streptococcus-macrolide-resistant clinical isolate 1/64 1/32 0.25 GP43 Streptococcus mitis-antibiotic-susceptible clinical isolate :: GP44 Streptococcus mitis-macrolide-resistant clinical isolate 1/64 1/64 1 GP45 Streptococcus constellatus-antibiotic-susceptible clinical isolate :: GP46 Streptococcus conste la us-macrolide-resistant clinical isolate :: GP47 Streptococcus oralis-antibiotic-susceptible clinical isolate 1/32 1/32 1 GP48 Streptococcus oralis-macrolide-resistant clinical isolate 1/32 1/32 1 GP49 Streptococcus bovis-antibiotic-susceptible clinical isolate 1/128 1/128 1 GP50 Streptococcus bovis-macrolide-resistant clinical isolate 1/128 1/128 1 GP51 Streptococcus sanguis-antibiotic-susceptible clinical isolate 1/64 1/64 0.5 GP52 Streptococcus sanguis-macrolide-resistant clinical isolate 1/64 1/64 1 GP53 Clostridium perfringens-antibiotic-susceptible clinical isolate ## 1/32 1/32 GN01 Escherichia coli ATCC25922-antibiotic-susceptible type strain 1/128 1/128 0.015 GN02 Escherichia coli ATCC35218--lactamase positive type strain 1/64 1/32 0.015 GN03 Escherichia coli-multi-drug resistant clinical isolate 1/64 1/64 > GN04 Klebsiella aerogenes NCTC11228-antibiotic-susceptible type strain 1/64 1/64 0.015 GN05 Klebsiella aerogenes-multi-drug resistant clinical isolate 1/16 1/16 1 GN06 Enterobacter sp-antibiotic-susceptible clinical isolate 1/16 1/16 0.12 GN07 Enterobacter sp-multi-drug resistant clinical isolate 1/64 1/64 0.06 GN08 Serratia marcescens-antibiotic-susceptible clinical isolate 1/32 1/64 0.25 GN09 Serratia marcescens-multi-drug resistant clinical isolate 1/32 1/32 8 GN10 Pseudomonas aeruginosa ATCC27853-antibiotic-susceptible 1/128 1/128 1 type strain GN11 Pseudomonas aeruginosa-multi-drug resistant clinical isolate 1/256 1/128 2 GN12 Stenotrophomonas maltophilia-antibiotic-susceptible clinical isolate 1/256 1/256 0.25 GN13 Stenotrophomonas maltophila-antibiotic-resistant clinical isolate 1/128 1/128 1 GN14 Burkholderia cepacia-antibiotic-susceptible clinical isolate 1/128 1/128 4 GN15 Proteus mirabilis-antibiotic-susceptible clinical isolate 1/64 1/64 0.06 GN16 Proteus mirabilis-multi-drug resistant clinical isolate 1/16 1/32 2 GN17 Salmonella sp-antibiotic-susceptible clinical isolate 1/64 1/64 0.03 GN18 Salmonella sp-multi-drug resistant clinical isolate 1/32 1/32 0.06 GN19 Shigella sp-antibiotic-susceptible clinical isolate 1/128 1/128 0.03 GN20 Shigella sp-multi-drug resistant clinical isolate 1/128 1/128 0.03 GN21 Morganella morganii-antibiotic-susceptible clinicalisolate {circumflex over ()}{circumflex over ()} GN22 Morganella morganii-multi-drug resistant clinical isolate ** 1/32 1/32 1 GN23 Providencia stuartii-antibiotic-susceptible clinical isolate 1/64 1/128 0.06 GN24 Providencia stuartii-multi-drug resistant clinical isolate ** 1/64 1/64 8 GN25 Neisseria meningitidis-antibiotic-susceptible clinical isolate susceptible && GN26 Haemophilus influenzae 13-lactamase negative clinical isolate ++ GN27 Haemophilus influenzae p-lactamase positive clinical isolate ++ GN28 Haemophilus influenzae 13-lactamase negative ampicillin-resistant clinical isolate ++ GN29 Moraxella catarrhalis 13-lactamase positive clinical isolate 1/128 1/256 0.06 GN30 Moraxella catarrhalis 13-lactamase positive clinical isolate 1/128 1/128 0.03 GN31 Acinetobacter baumanii-antibiotic-susceptible clinical isolate ** 1/128 1/128 0.12 GN32 Acinetobacter baumanii-multi-drug resistant clinical isolate ** 1/256 1/128 8 GN33 Bacteroides fragilis-antibiotic-susceptible clinical isolate ## 1/64 1/64 P8096038 Citrobacter freundii-antibiotic-susceptible clinical isolate 1/1024 1/512 0.015 P8119035 Citrobacter freundii-resistant clinical isolate 1/128 1/256 8 CD01 Clostridium difficile == CD02 Clostridium difficile == CD03 Clostridiumdifficile == CD04 Clostridium difficile == CD05 Clostridium difficile == CD06 Clostridium difficile == CD07 Clostridium difficile == CD08 Clostridium difficile == CD09 Clostridium difficile == CD10 Clostridium difficile == MID/MIC mg/L Levo- Clinda- Clinda- Isolate Organism floxacin mycin mycin GP01 Staphylococcus aureus ATCC 29213-antibiotic-susceptible 0.12 control strain GP02 Staphylococcus aureus ATCC 25923-antibiotic-susceptible 0.12 control strain GP03 Staphylococcus aureus ATCC 43300-methicillin-resistant control strain 0.25 GP04 Staphylococcus aureus-methicillin-resistant clinical isolate 0.12 GP05 Staphylococcus aureus-multi-drug-resistant clinical isolate 4 GP06 Staphylococcus aureus-teicoplanin-intermediate clinical isolate 4 GP07 Staphylococcus epidermidis antibiotic susceptible clinical isolate 0.12 GP08 Staphylococcus epidermidis methicillin-resistant clinical isolate 0.25 GP09 Staphylococcus haemolyticus-antibiotic susceptible clinical isolate 0.5 GP10 Staphylococcus saprophyticus-antibiotic susceptible clinical isolate 0.5 GP11 Enterococcus faecalis-ATCC 29212 antibiotic-susceptible 2 control strain GP12 Enterococcus faecalis vancomycin-susceptible clinical isolate 4 GP13 Enterococcus faecalis vancomycin-resistant (VanA) clinical isolate ** GP14 Enterococcus faecalis vancomycin-resistant (VanB) clinical isolate ** GP15 Enterococcus faecalis high-level gentamicin-resistant clinical isolate ** GP16 Enterococcus faecium vancomycin-susceptible clinical isolate >8 GP17 Enterococcus faecium vancomycin-resistant VanA) clinical isolate >8 GP18 Enterococcus faecium vancomycin-resistant (VanB) clinical isolate 4 GP19 Enterococcus gallinarum vancomycin-resistant (VanC) clinical isolate 2 GP20 Streptococcus pneumoniae-ATCC 49619 1 antibiotic-susceptible control strain GP21 Streptococcus pneumoniae-pencillin-susceptible clinical isolate 1 GP22 Streptococcus pneumoniae-penicillin-intermediate clinical isolate 0.5 GP23 Streptococcus pneumoniae-penicillin-resistant clinical isolate 0.5 GP24 Streptococcus pneumoniae-multi-drug resistant clinical isolate 1 GP25 Streptococcus pyogenes-antibiotic-susceptible clinical isolate @@ GP26 Streptococcus pyogenes-Macrolide (MLS) resistant clinical isolate 0.5 GP27 Streptococcus pyogenes-Macrolide(M-type) resistance clinical isolate :: GP28 Corynebacterium jeikeium-antibiotic-susceptible clinical isolate :: GP29 Corynebacterium jeikeium-multi-drug resistant clinical isolate :: GP30 Listeria monocytogenes-antibiotic-susceptible clinical isolate 0.5 GP31 MU50 Staphylococcus aureus (MRSA)-VISA type strain 8 GP32 EMRSA3 Staphylococcus aureus (MRSA)-SSCmec type 1 0.06 GP33 EMRSA16 Staphylococcus aureus (MRSA)-SSCmec type 2 >8 GP34 EMRSA1 Staphylococcus aureus (MRSA)-SSCmec type 3 0.12 GP35 EMRSA15 Staphylococcus aureus (MRSA)-SSCmec type 4 0.06 GP36 HT2001254 Staphylococcus aureus (MRSA)-PVL positive 0.12 .. GP37 Streptococcus agalactiae-antibiotic-susceptible clinical isolate 1 GP38 Streptococcus agalactiae-macrolide-resistant clinical isolate 1 GP39 Group C Streptococcus-antibiotic-susceptible clinical isolate 0.5 GP55 Group C Streptococcus-antibiotic-resistant clinical isolate 0.5 GP41 Group G Streptococcus-antibiotic-susceptible clinical isolate 0.25 GP42 Group G Streptococcus-macrolide-resistant clinical isolate 0.25 GP43 Streptococcus mitis-antibiotic-susceptible clinical isolate :: GP44 Streptococcus mitis-macrolide-resistant clinical isolate 1 GP45 Streptococcus constellatus-antibiotic-susceptible clinical isolate :: GP46 Streptococcus constellatus-macrolide-resistant clinical isolate :: GP47 Streptococcus oralis-antibiotic-susceptible clinical isolate 1 GP48 Streptococcus orails-macrolide-resistant clinical isolate 1 GP49 Streptococcus bovis-antibiotic-susceptible clinical isolate 1 GP50 Streptococcus bovis-macrolide-resistant clinical isolate 1 GP51 Streptococcus sanguis-antibiotic-susceptible clinical isolate 0.5 GP52 Streptococcus sanguis-macrolide-resistant clinical isolate 1 GP53 Clostridium perfringens-antibiotic-susceptible clinical isolate ## 0.06 0.06 GN01 Escherichia coli ATCC25922-antibiotic-susceptible type strain 0.015 GN02 Escherichia coli ATCC35218--lactamase positive type strain 0.015 GN03 Escherichia coli-multi-drug resistant clinical isolate >8 GN04 Klebsiella aerogenes NCTC11228-antibiotic-susceptible type strain 0.03 GN05 Klebsiella aerogenes-multi-drug resistant clinical isolate 1 GN06 Enterobacter sp-antibiotic-susceptible clinical isolate 0.12 GN07 Enterobacter sp-multi-drug resistant clinical isolate 0.06 GN08 Serratia marcescens-antibiotic-susceptible clinical isolate 0.12 GN09 Serratia marcescens-multi-drug resistant clinical isolate 8 GN10 Pseudomonas aeruginosa ATCC27853-antibiotic-susceptible 1 type strain GN11 Pseudomonas aeruginosa-multi-drug resistant clinical isolate 2 GN12 Stenotrophomonas maltophilia-antibiotic-susceptible clinical isolate 0.25 GN13 Stenotrophomonas maltophila-antibiotic-resistant clinical isolate 1 GN14 Burkholderia cepacia-antibiotic-susceptible clinical isolate 4 GN15 Proteus mirabilis-antibiotic-susceptible clinical isolate 0.06 GN16 Proteus mirabilis-multi-drug resistant clinical isolate 2 GN17 Salmonella sp-antibiotic-susceptible clinical isolate 0.03 GN18 Salmonella sp-multi-drug resistant clinical isolate 0.06 GN19 Shigella sp-antibiotic-susceptible clinical isolate 0.03 GN20 Shigella sp-multi-drug resistant clinical isolate 0.03 GN21 Morganella morganii-antibiotic-susceptible clinical isolate {circumflex over ()}{circumflex over ()} GN22 Morganella morganii-multi-drug resistant clinical isolate ** 1 GN23 Providencia stuartii-antibiotic-susceptible clinical isolate 0.06 GN24 Providencia stuartii-multi-drug resistant clinical isolate ** 8 GN25 Neisseria meningitidis-antibiotic-susceptible clinical isolate susceptible && GN26 Haemophilus influenzae -lactamase negative clinical isolate ++ GN27 Haemophilus influenzae -lactamase positive clinical isolate ++ GN28 Haemophilus influenzae lactamase negative ampicillin-resistant clinical isolate++ GN29 Moraxella catarrhalis -lactamase positive clinical isolate 0.06 GN30 Moraxella catarrhalis -lactamase positive clinical isolate 0.06 GN31 Acinetobacter baumanii-antibiotic-susceptible clinical isolate ** 0.12 GN32 Acinetobacter baumanii-multi-drug resistant clinical isolate ** 8 GN33 Bacteroides fragilis-antibiotic-susceptible clinical isolate ## 0.06 0.06 P8096038 Citrobacter freundii-antibiotic-susceptible clinical isolate 0.015 P8119035 Citrobacter freundii-resistant clinical isolate 8 CD01 Clostridium difficile == 4 4 CD02 Clostridium difficile == 4 4 CD03 Clostridium difficile == 2 2 CD04 Clostridium difficile == 2 2 CD05 Clostridium difficile == 1 1 CD06 Clostridium difficile == 1 1 CD07 Clostridium difficile == 1 1 CD08 Clostridium difficile == 1 1 CD09 Clostridium difficile == 0.5 1 CD10 Clostridium difficile == 1 2 ** NG IN RPMI ALONE OR WITH ADDED WHOLE HORSE BLOOD && NOT YET TESTED {circumflex over ()}{circumflex over ()} NG IN RPMI ALONE 2% SERUM :: NG IN RPMI WITH ADDED SERUM ++ NG IN RPMI WITH ADDED SERUM AND NAD ## Supplemented with 2% serum and 1 g/mL Vit K == Brucella broth supplemented with 5% LHB, 1 g/mL Vit K and 1 g/mL Haemin @@ NG IN RPMI WITH WHOLE HORSE BLOOD AND NAD
TABLE-US-00056 TABLE 22b ug/ml ug/ml ug/ml ug/ml ug/ml ug/ml ug/ml GR- GR- GR- GR- GR- GR- GR- Organism 21 08 05 01 24 25 26 Citrobacter freundii - antibiotic-susceptible clinical isolate 0.21 0.23 0.16 0.20 0.23 0.02 0.02 Stenotrophomonas maltophilia - antibiotic-susceptible clinical isolate 0.05 0.06 0.04 0.05 0.06 0.04 0.08 Acinetobacter baumanii - multi-drug resistant clinical isolate ## 0.11 0.12 0.08 0.10 0.12 0.07 0.08 Burkholderia cepacia - antibiotic-susceptible clinical isolate 0.11 0.12 0.16 0.10 0.12 0.07 0.17 Pseudomonas aeruginosa - multi-drug resistant clinical isolate 0.11 0.12 0.08 0.10 0.12 0.07 0.08 Stenotrophomonas maltophila - antibiotic-resistant clinical isolate 0.11 0.12 0.16 0.10 0.12 0.07 0.17 Acinetobacter baumanii - antibiotic-susceptible clinical isolate ## 0.11 0.12 0.08 0.10 0.12 0.07 0.17 Moraxella catarrhalis -lactamase positive clinical isolate 0.11 0.12 0.16 0.10 0.06 0.07 0.17 Moraxella catarrhalis -lactamase positive clinical isolate 0.11 0.12 0.16 0.10 0.12 0.07 0.17 Shigella sp - multi-drug resistant clinical isolate ## 0.11 0.12 0.08 0.10 0.12 0.07 0.17 Enterococcus faecium vancomycin-resistant (VanB) clinical isolate 0.11 0.12 0.16 0.10 0.12 0.14 0.08 Listeria monocytogenes - antibiotic-susceptible clinical isolate 0.21 0.23 0.33 0.20 0.23 0.14 0.33 Citrobacter freundii - resistant clinical isolate 0.21 0.46 0.33 0.20 0.23 0.14 0.17 Providencia stuartii - multi-drug resistant clinical isolate 0.21 0.23 0.16 0.20 0.23 0.14 0.33 Staphylococcus aureus - multi-drug-resistant clinical isolate 0.21 0.23 0.16 0.20 0.23 0.14 0.17 Staphylococcus aureus - teicoplanin-intermediate clinical isolate 0.21 0.23 0.33 0.20 0.23 0.14 0.17 Enterococcus faecalis - ATCC 29212 antibiotic-susceptible control 0.21 0.23 0.33 0.20 0.23 0.14 0.33 strain ## Pseudomonas aeruginosa ATCC27853 - antibiotic-susceptible type 0.11 0.12 0.16 0.20 0.12 0.14 0.17 strain ## Streptococcus bovis - antibiotic-susceptible clinical isolate 0.21 0.23 0.33 0.20 0.23 0.14 0.17 Streptococcus bovis - macrolide-resistant clinical isolate 0.21 0.23 0.16 0.20 0.23 0.14 0.17 Staphylococcus haemolyticus - antibiotic susceptible clinical isolate 0.11 0.12 0.16 0.20 0.12 0.14 0.17 Staphylococcus saprophyticus - antibiotic susceptible clinical isolate 0.21 0.23 0.16 0.20 0.23 0.14 0.33 Staphylococcus aureus ATCC 43300- methicillin-resistant control 0.11 0.23 0.16 0.20 0.23 0.14 0.17 strain ## Staphylococcus epidermidis methicillin-resistant clinical isolate 0.11 0.23 0.16 0.20 0.12 0.14 0.17 Staphylococcus aureus - methicillin-resistant clinical isolate 0.21 0.23 0.16 0.20 0.12 0.14 0.17 Staphylococcus aureus ATCC25923- antibiotic-susceptible control 0.11 0.12 0.16 0.20 0.12 0.14 0.17 strain Staphylococcus aureus ATCC29213- antibiotic-susceptible control 0.21 0.23 0.16 0.20 0.23 0.14 0.17 strain Staphylococcus epidermidis antibiotic susceptible clinical isolate 0.21 0.23 0.16 0.20 0.23 0.14 0.17 Providencia stuartii - antibiotic-susceptible clinical isolate 0.21 0.23 0.33 0.20 0.12 0.14 0.33 Shigella sp - antibiotic-susceptible clinical isolate 0.11 0.12 0.16 0.10 0.12 0.14 0.17 Streptococcus pyogenes - Macrolide (MLS) resistant clinical isolate 0.43 0.46 0.33 0.40 0.23 0.28 0.33 Enterococcus faecalis vancomycin-susceptible clinical isolate 0.21 0.23 0.33 0.20 0.23 0.28 0.33 Morganella morganii - multi-drug resistant clinical isolate 0.43 0.46 0.16 0.40 0.12 0.28 0.66 Streptococcus agalactiae - antibiotic-susceptible clinical isolate 0.85 0.91 1.31 0.40 0.47 0.28 0.33 Streptococcus agalactiae - macrolide-resistant clinical isolate 0.21 0.91 1.31 0.40 0.23 0.28 0.33 Streptococcus mitis - macrolide-resistant clinical isolate 0.43 0.46 0.33 0.40 0.47 0.28 0.33 Streptococcus pneumoniae - multi-drug resistant clinical isolate 0.43 0.46 0.33 0.40 0.23 0.28 0.33 Streptococcus pneumoniae ATCC 49619 antibiotic-susceptible control 0.43 0.46 0.33 0.40 0.47 0.28 0.33 strain ## Streptococcus pneumoniae - pencillin-susceptible clinical isolate 0.43 0.46 0.33 0.40 0.47 0.28 0.33 Streptococcus sanguis - macrolide-resistant clinical isolate 0.43 0.23 0.33 0.20 0.23 0.28 0.33 Streptococcus pneumoniae - penicillin-intermediate clinical isolate 0.21 0.46 0.33 0.40 0.47 0.28 0.33 Streptococcus pneumoniae - penicillin-resistant clinical isolate 0.43 0.23 0.33 0.40 0.47 0.28 0.33 Streptococcus sanguis - antibiotic-susceptible clinical isolate 0.43 0.23 0.33 0.40 0.47 0.28 0.33 Enterobacter sp - multi-drug resistant clinical isolate 0.43 0.46 0.33 0.78 0.23 0.28 0.33 Proteus mirabilis - antibiotic-susceptible clinical isolate 0.43 0.23 0.16 0.20 0.23 0.28 0.33 Salmonella sp - multi-drug resistant clinical isolate 0.21 0.23 0.16 0.20 0.23 0.28 0.66 Klebsiella aerogenes NCTC11228 - antibiotic-susceptible type strain 0.85 0.46 0.33 0.40 0.47 0.28 0.33 Escherichia coli ATCC25922 - antibiotic-susceptible type strain 0.21 0.12 0.16 0.20 0.23 0.28 0.17 Serratia marcescens - multi-drug resistant clinical isolate 0.21 0.46 0.33 0.20 0.23 0.56 0.66 Enterococcus gallinarum vancomycin-resistant (VanC) clinical isolate 0.43 0.46 0.66 0.40 0.47 0.56 0.66 Proteus mirabilis - multi-drug resistant clinical isolate 0.85 0.46 0.33 0.78 0.93 0.56 1.33 Klebsiella aerogenes - multi-drug resistant clinical isolate 0.85 0.46 0.16 0.78 0.93 0.56 1.33 Streptococcus oralis - antibiotic-susceptible clinical isolate 0.43 0.46 0.66 0.40 0.47 0.56 0.66 Streptococcus oralis - macrolide-resistant clinical isolate 0.43 0.46 0.66 0.78 0.47 0.56 0.66 Enterobacter sp - antibiotic-susceptible clinical isolate 1.70 0.46 0.66 0.78 0.93 0.56 1.33 Serratia marcescens - antibiotic-susceptible clinical isolate 0.43 0.23 0.33 0.40 0.47 0.56 0.66 Relative Efficacy Levels ug/ml LVF/GR- LVF/GR- LVF/GR- Organism Leveflexacin 25 8 5 Citrobacter freundii - antibiotic-susceptible clinical isolate 0.02 0.9 0.1 0.1 Stenotrophomonas maltophilia - antibiotic-susceptible clinical isolate 0.25 7.1 4.2 6.3 Acinetobacter baumanii - multi-drug resistant clinical isolate ## 8.00 113.8 66.7 100.0 Burkholderia cepacia - antibiotic-susceptible clinical isolate 4.00 56.9 33.3 25.0 Pseudomonas aeruginosa - multi-drug resistant clinical isolate 2.00 28.4 16.7 25.0 Stenotrophomonas maltophila - antibiotic-resistant clinical isolate 1.00 14.2 8.3 6.3 Acinetobacter baumanii - antibiotic-susceptible clinical isolate ## 0.12 1.7 1.0 1.5 Moraxella catarrhalis -lactamase positive clinical isolate 0.06 0.9 0.5 0.4 Moraxella catarrhalis -lactamase positive clinical isolate 0.06 0.9 0.5 0.4 Shigella sp - multi-drug resistant clinical isolate ## 0.03 0.4 0.3 0.4 Enterococcus faecium vancomycin-resistant (VanB) clinical isolate 4.00 28.6 33.3 25.0 Listeria monocytogenes - antibiotic-susceptible clinical isolate 0.50 3.6 2.2 1.5 Citrobacter freundii - resistant clinical isolate 8.00 56.9 17.4 24.2 Providencia stuartii - multi-drug resistant clinical isolate 8.00 56.9 34.8 50.0 Staphylococcus aureus - multi-drug-resistant clinical isolate 4.00 28.4 17.4 25.0 Staphylococcus aureus - teicoplanin-intermediate clinical isolate 4.00 28.4 17.4 12.1 Enterococcus faecalis - ATCC 29212 antibiotic-susceptible control 2.00 14.2 8.7 6.1 strain ## Pseudomonas aeruginosa ATCC27853 - antibiotic-susceptible type 1.00 7.1 8.3 6.3 strain ## Streptococcus bovis - antibiotic-susceptible clinical isolate 1.00 7.1 4.3 3.0 Streptococcus bovis - macrolide-resistant clinical isolate 1.00 7.1 4.3 6.3 Staphylococcus haemolyticus - antibiotic susceptible clinical isolate 0.50 3.6 4.2 3.1 Staphylococcus saprophyticus - antibiotic susceptible clinical isolate 0.50 3.6 2.2 3.1 Staphylococcus aureus ATCC 43300- methicillin-resistant control 0.25 1.8 1.1 1.6 strain ## Staphylococcus epidermidis methicillin-resistant clinical isolate 0.25 1.8 1.1 1.6 Staphylococcus aureus - methicillin-resistant clinical isolate 0.12 0.9 0.5 0.8 Staphylococcus aureus ATCC 25923- antibiotic-susceptible control strain 0.12 0.9 1.0 0.8 Staphylococcus aureus ATCC 29213- antibiotic-susceptible control strain 0.12 0.9 0.5 0.8 Staphylococcus epidermidis antibiotic susceptible clinical isolate 0.12 0.9 0.5 0.8 Providencia stuartii - antibiotic-susceptible clinical isolate 0.06 0.4 0.3 0.2 Shigella sp - antibiotic-susceptible clinical isolate 0.03 0.2 0.3 0.2 Streptococcus pyogenes - Macrolide (MLS) resistant clinical isolate 0.50 1.8 1.1 1.5 Enterococcus faecalis vancomycin-susceptible clinical isolate 4.00 14.2 17.4 12.1 Morganella morganii - multi-drug resistant clinical isolate 1.00 3.6 2.2 6.3 Streptococcus agalactiae - antibiotic-susceptible clinical isolate 1.00 3.6 1.1 0.8 Streptococcus agalactiae - macrolide-resistant clinical isolate 1.00 3.6 1.1 0.8 Streptococcus mitis - macrolide-resistant clinical isolate 1.00 3.6 2.2 3.0 Streptococcus pneumoniae - multi-drug resistant clinical isolate 1.00 3.6 2.2 3.0 Streptococcus pneumoniae ATCC 49619 antibiotic-susceptible control 1.00 3.6 2.2 3.0 strain ## Streptococcus pneumoniae - pencillin-susceptible clinical isolate 1.00 3.6 2.2 3.0 Streptococcus sanguis - macrolide-resistant clinical isolate 1.00 3.6 4.3 3.0 Streptococcus pneumoniae - penicillin-intermediate clinical isolate 0.50 1.8 1.1 1.5 Streptococcus pneumoniae - penicillin-resistant clinical isolate 0.50 1.8 2.2 1.5 Streptococcus sanguis - antibiotic-susceptible clinical isolate 0.50 1.8 2.2 1.5 Enterobacter sp - multi-drug resistant clinical isolate 0.06 0.2 0.1 0.2 Proteus mirabilis - antibiotic-susceptible clinical isolate 0.06 0.2 0.3 0.4 Salmonella sp - multi-drug resistant clinical isolate 0.06 0.2 0.3 0.4 Klebsiella aerogenes NCTC11228 - antibiotic-susceptible type strain 0.03 0.1 0.1 0.1 Escherichia coli ATCC25922 - antibiotic-susceptible type strain 0.02 0.1 0.1 0.1 Serratia marcescens - multi-drug resistant clinical isolate 8.00 14.2 17.4 24.2 Enterococcus gallinarum vancomycin-resistant (VanC) clinical isolate 2.00 3.6 4.3 3.0 Proteus mirabilis - multi-drug resistant clinical isolate 2.00 3.6 4.3 6.1 Klebsiella aerogenes - multi-drug resistant clinical isolate 1.00 1.8 2.2 6.3 Streptococcus oralis - antibiotic-susceptible clinical isolate 1.00 1.8 2.2 1.5 Streptococcus oralis - macrolide-resistant clinical isolate 1.00 1.8 2.2 1.5 Enterobacter sp - antibiotic-susceptible clinical isolate 0.12 0.2 0.3 0.2 Serratia marcescens - antibiotic-susceptible clinical isolate 0.12 0.2 0.5 0.4
[0698] Specifically, Table 22a reports results in terms of dilution amounts to achieve a MID/MIC 50. Accordingly, for example, the number 1/64 under GR-05 for GP01 means that the original GR-05 solution was diluted to 1/64.sup.th its potency to achieve and MID/MIC50 for Staphylococcus aureus ATCC-29213. The numbers under the columns Levofloxacin correspond to the amount of antibiotic in g/ml required to achieve a similar MID/MIC 50.
[0699] In contrast, the numbers reported in Table 22b are all reported in g/ml. Additionally, the relative efficacy levels for three of the test solutions relative to Levofloxacin are also reported. Wherever the reported number is 1.0 or greater, it means that the test solution was as good as, or better, than the known antibiotic. Accordingly, a number of 1.5 means that when the ppm of the solution is converted to g/ml and the number of g/ml (i.e., from the converted ppm) is divided into the required g/ml of the antibiotic needed to achieve an MIC/MID 50, 1.5 times as much antibiotic is needed to achieve the same effect. Thus, many of the test solutions significantly outperformed this antibiotic.
[0700] Table 22c uses a format similar to that used for Table 22a, however, the test solutions were tested against a variety of fungi. Again, the test solutions were significantly diluted to achieve MID/MIC 50 values (e.g., dilutions between .sup.th and 1/128.sup.th), showing that the test solutions also have significant efficacy against fungi.
TABLE-US-00057 TABLE 22c MID/MIC mg/L GR- GR- GR- GR- GR- GR- GR- GR- GR- GR- GR- GR- Isolate Organism 05 05 08 08 21 21 01 01 24 24 25 25 NCPF 7147 Alternaria alternata 48 hrs 1/16 1/16 1/16 1/16 1/16 1/32 1/32 1/32 1/32 1/64 1/64 1/64 NCPF 2175 Aspergillus flavus 48 hrs 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/32 1/64 1/64 NCPF 2140 Aspergillus furnigatus 48 hrs 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/32 1/32 1/32 1/64 1/64 NIH 2624 Aspergillus terreus 48 hrs 1/32 1/32 1/32 1/32 1/32 1/32 1/64 1/64 1/64 1/64 1/128 1/128 NCPF 3309 Candida glabrata - 24 hrs 1/32 1/32 1/32 1/32 1/32 1/32 1/32 1/32 1/64 1/64 1/128 1/128 NCPF 3309 Candida glabrata - 48 hrs 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/32 1/32 1/32 NCPF 3516 Candida lusitaniae - 24 hrs 1/64 1/64 1/64 1/64 1/64 1/64 1/64 1/64 11128 1/128 1/128 1/256 NCPF 3516 Candida lusitaniae 48 hrs 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/32 1/64 1/64 ATCC 22019 Candida parapsilosis - 24 hrs 1/128 1/128 1/64 1/64 1/64 1/64 1/64 1/64 1/128 1/128 1/256 1/256 ATCC 22019 Candida parapsilosis 48 hrs 1/32 1/32 1/32 1/32 1/32 1/32 1/16 1/16 1/64 1/64 1/64 1/64 NCPF 5011 Epidermophyton floccosum - 1/32 1/32 1/32 1/32 1/16 1/16 1/32 1/32 1/64 1/32 1/64 1/128 48 hrs NCPF 2722 Fusarium oxysporum - 48 hrs 1/16 1/16 1/8 1/8 1/8 1/8 1/16 1/16 1/16 1/16 1/32 1/32 NCPF 436 *Microsporum audounii - 72 hrs }} 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/16 NCPF 177 *Microsporum canis - 72 hrs }} 1/32 1/32 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/32 1/64 1/32 NCPF 988 *Microsporum ferrugineum - 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/16 1/16 72 hrs ** NCPF 2743 Mucor circinelloides - 48 hrs 1/8 1/16 1/8 1/8 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/32 NCPF 2715 Penicillium chrysogenum 48 hrs 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/32 1/32 1/32 1/64 1/64 NCPF 2634 Rhizopus oligosporus - 24 hrs 1/64 1/64 1/64 1/64 1/64 1/64 1/128 1/64 1/128 1/128 1/128 1/128 NCPF 7075 *Sporothrix schenkii - 72 hrs }} 1/32 1/32 1/16 1/16 1/16 1/16 1/32 1/32 1/32 1/32 1/64 1/64 NCPF 175 Trychophyton interdigitale 72 hrs 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/16 1/16 1/32 1/32 NCPF 224 Trichophyton mentagrophytes 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/32 1/32 48 hrs NCPF 118 Trichophyton rubrum 48 hrs 1/16 1/16 1/16 1/16 1/32 1/16 1/16 1/32 1/32 1/32 1/64 1/64 NCPF 3853 Trichophyton cutaneum 48 hrs 1/32 1/32 1/16 1/16 1/32 1/32 1/32 1/32 1/32 1/64 1/64 1/64 MD/MC mg/L GR- GR- Amphotericin Amphotericin isolate Organism 26 26 B B NCPF 7147 Alternaria alternata - 48 hrs 1/64 1/64 1 1 NCPF 2175 Aspergillus flavus - 48 hrs 1/32 1/32 4 4 NCPF 2140 Aspergillus fumigatus - 48 hrs 1/64 1/64 2 2 NIH 2624 Aspergillus terreus - 48 hrs 1/128 1/128 2 2 NCPF 3309 Candida glabrata - 24 hrs 1/64 1/64 0.5 0.5 NCPF 3309 Candida glabrata - 48 hrs 1/32 1/32 1 1 NCPF 3516 Candida lusitaniae - 24 hrs 1/128 1/256 0.5 0.5 NCPF 3516 Candida lusitaniae - 48 hrs 1/32 1/32 1 1 ATCC 22019 Candida parapsilosis - 24 hrs 1/256 1/256 0.5 0.5 ATCC 22019 Candida parapsilosis - 48 hrs 1/64 1/64 1 1 NCPF 5011 Epidermophyton floccosum - 1/32 1/128 0.25 0.25 48 hrs NCPF 2722 Fusarium oxysporum - 48 hrs 1/32 1/32 1 1 NCPF 436 *Microsporurn audounii - 72 hrs }} 1/32 1/32 0.5 0.5 NCPF 177 *Microsporurn canis - 72 hrs }} 1/64 1/32 0.12 0.12 NCPF 988 *Microsporum ferrugineum - 1/16 1/16 1 1 72 hrs }} NCPF 2743 Mucor circinelloides - 48 hrs 1/32 1/32 1 1 NCPF 2715 Penicillium chrysogenum 48 hrs 1/64 1/64 2 2 NCPF 2634 Rhizopus ofigosporus - 24 hrs 1/128 1/128 0.5 0.5 NCPF 7075 *Sporothrix schenkii - 72 hrs }} 1/64 1/64 1 1 NCPF 175 Trychophyton interdigitaie - 1/16 1/16 2 2 72 hrs NCPF 224 Trichophyton mentagrophytes - 1/32 1/32 2 2 48 hrs NCPF 118 Trichophyton rubrum 48 hrs 1/64 1/64 0.5 1 NCPF 3853 Trichophyton cutaneum 48 hrs 1/64 1/64 0.5 0.5 24 hour read }} *Required 72 hours incubation
Example 19
Antiviral Efficacy of Solutions GR-05 and GR-08
[0701] The purpose of this Example was to evaluate the antiviral properties of two solutions, GR05 and GR-08 against duck Hepatitis B virus (i.e., as a surrogate virus for the human Hepatitis B virus) when exposed (in suspension) for the specified exposure period. The protocol utilized was a modification of the Standard Test Method for Efficacy of Virucidal Agents Intended for Special Applications (ASTM E1052).
[0702] The LeGarth strain of duck Hepatitis B virus (DHBV) used for this study was obtained commercially from Hepadnavirus Testing Inc., Palo Alto, Calif. and consisted of duck Hepatitis B virus serum obtained from congenitally infected ducklings. Virus aliquots were maintained at 70 C. On the day of use, two aliquots were removed, thawed, combined and refrigerated or stored on ice until used in the assay.
[0703] A suspension of primary duck hepatocytes was achieved following an in situ perfusion of the duck liver. The hepatocytes were seeded into sterile disposable tissue culture labware, maintained at 36-38 C. in a humidified atmosphere of 5-7% CO.sub.2 and used at the appropriate density. Only ducklings verified to be free of test virus were utilized in the assay.
[0704] The test medium used in this study was Leibovitz L-15 medium supplemented with 0.1% glucose, 10 M dexamethasone, 10 pg/mL insulin, 20 mM HEPES, 10 pg/mL gentamicin and 100 units/mL penicillin.
[0705] Table 23a lists the test and control groups, the dilutions assayed, and the number of cultures used.
TABLE-US-00058 TABLE 23a Number of Dilutions and Cullum for Virucidal Suspension Study Test or Dilutions Assayed Cultures Total Control Group (log.sub.10) per dilution Cultures Cell Control N/A 4 4/group Virus Control 2, 3, 4, 5, 6, 7 4 24 Sample lot #1 + virus 2, 3, 4, 5, 6, 7 4 24 Sample lot #2 + virus 2, 3, 4, 5, 6, 7 4 24 Cytotoxicity of lot #1 2, 3, 4 2 6 Cytotoxicity of lot #2 2, 3, 4 2 6 Neutralization 2, 3, 4 2 6 Control-lot #1 Neutralization 2, 3, 4 2 6 Control-lot #2
[0706] A 4.5 mL aliquot of each of GR-05 and GR-08 was dispensed into separate sterile 15 mL conical tubes and mixed with a 0.5 mL aliquot of the stock virus suspension. The mixtures were vortex mixed for a minimum of 10 seconds and held for the remainder of the specified exposure times at 37.0 C. The exposure times assayed was six hours. Immediately following each exposure time, a 0.5 mL aliquot was removed from each tube and the mixtures were tittered by 10-fold serial dilutions (0.5 mL+4.5 mL test medium) and assayed for the presence of virus.
[0707] A 0.5 mL aliquot of stock virus suspension was exposed to a 4.5 mL aliquot of test medium in lieu of test substance and treated as previously described. Immediately following each exposure time, a 0.5 mL aliquot was removed from the tube and the mixture was titered by 10-fold serial dilutions (0.5 mL+4.5 mL test medium) and assayed for the presence of virus. All controls employed the FBS neutralizer as described in the Treatment of Virus Suspension section. A virus control was performed for each exposure time. The virus control titer was used as a baseline to compare the percent and log reductions of each test parameter following exposure to the test substances.
[0708] A 4.5 mL aliquot of each concentration of test substance was mixed with 0.5 mL aliquot of test medium in lieu of virus and treated as previously described. The cytotoxicity of the cell cultures was scored at the same time as virus-test substance and virus control cultures. Cytotoxicity was graded on the basis of cell viability as determined microscopically. Cellular alterations due to toxicity were graded and reported toxic (T) if greater than or equal to 50% of the monolayer was affected.
[0709] Each cytotoxicity control mixture (above) was challenged with low titer stock virus to determine the dilution(s) of test substance at which virucidal activity, if any was retained. Dilutions that showed virucidal activity were not considered in determining reduction of the virus by the test substance.
[0710] As previously described, 0.1 mL of each test and control parameter following the exposure period was added to fetal bovine serum (0.9 mL) followed immediately by 10-fold serial dilutions in test medium to stop the action of the test substance. To determine if the neutralizer chosen for the assay was effective in diminishing the virucidal activity of the test substance, low titer stock virus was added to each dilution of the test substance-neutralizer mixture. This mixture was assayed for the presence of the virus (neutralization control above).
[0711] Primary duck hepatocytes were used as the indicator cell line in the infectivity assays. Cells contained in cell culture labware were inoculated in quadruplicate with 1.0 mL of the dilutions prepared from the input virus control, virus control and test substances. The cytotoxicity and neutralization control dilutions were inoculated in duplicate. Uninfected indicator cell cultures (negative cell controls) were inoculated with test medium alone. A 2.0 mL aliquot of test medium was added to each cell culture well. The inoculum was allowed to adsorb overnight at 36-38 C. in a humidified atmosphere of 5-7% CO.sub.2. Following the adsorption period, a 3.0 mL aliquot of test medium was added to each cell culture well. The cultures were incubated at 36-38 C. in a humidified atmosphere of 5-7% CO.sub.2 for ten days. The test medium was aspirated from each test and control well and replaced with fresh medium as needed throughout the incubation period. On the final day of incubation, the cultures were scored microscopically for cytotoxicity and the cells were fixed with ethanol. An indirect immunofluorescence assay was then performed using a monoclonal antibody specific for the envelope protein of the DHBV.
[0712] Viral and cytotoxicity titers are expressed as log.sub.10 of the 50 percent titration endpoint for infectivity (TCID.sub.50) or cytotoxicity (TCD.sub.50), respectively, as calculated by the method of Spearman Karber.
[0713] A valid test requires 1) that stock virus be recovered from the virus control, 2) that the cell controls be negative for virus, and 3) that negative cultures are viable.
[0714] Test substance cytotoxicity was not observed at any dilution assayed (1.5 log.sub.10). Under the conditions of this investigation, GR-05 and GR-08 demonstrated a 99.99% reduction in viral titer following a six hour exposure time to duck Hepatitis B virus. The log reduction in viral titer was 4.0 log.sub.10. Specifically, Table 23b sets forth the experimental results.
TABLE-US-00059 TABLE 23b Assay Results Effects of GR-05 and GR-08 Against Duck Hepatitis B Virus as a Surrogate Virus for Human Hepatitis B Virus in Suspension Following a Six Hour Exposure Time Test: Duck Test: Duck Hepatitis B Hepatitis B virus + NOG- virus + NOG- Virus Control 5B-28T 8B-27T Exposure Exposure Exposure Time 6 Time 6 Time 6 Dilution Hours Hours Hours Cell Control 0 0 0 0 0 0 0 0 0 0 0 0 10.sup.2 + + + + 0 0 0 0 0 0 0 0 10.sup.3 + + + + 0 0 0 0 0 0 0 0 10.sup.4 + + + + 0 0 0 0 0 0 0 0 10.sup.5 + + + + 0 0 0 0 0 0 0 0 10.sup.6 0 0 0 0 0 0 0 0 0 0 0 0 10.sup.7 0 0 0 0 0 0 0 0 0 0 0 0 TCID.sub.50/0.1 mL 10.sup.5.5 10.sup.1.5 10 .sup.1.5 Percent N/A 99.99% 99.99% Reduction Log.sub.10 N/A 4.0 log.sub.10 4.0 log.sub.10 Reduction (+) = Positive for the presence of test virus (0) = No test virus recovered and/or no cytotoxicity present (NT) = Not tested (N/A) = Not applicable
[0715] Table 23c sets forth the cytotoxicity and neutralization control results. As the date show, no cytotoxicity was measured for the GR-05 and GR-08 solutions.
TABLE-US-00060 TABLE 23C Cytotoxicity and Neutralization Controls Cytotoxicity Neutralization Control Control Duck Hepatitis B Duck Hepatitis B Dilution GR-05 GR-08 virus + GR-05 virus + GR-08 Cell Control 0 0 0 0 0 0 0 0 10.sup.2 0 0 0 0 + + + + 10.sup.3 0 0 0 0 + + + + 10.sup.4 0 0 0 0 + + + + 10.sup.5 NT NT NT NT 10.sup.6 NT NT NT NT 10.sup.7 NT NT NT NT TCID.sub.50/0.1 mL 10.sup.1.5 10.sup.1.5 Neutralized at 1.5 Neutralized at Log.sub.10 1.5 Log.sub.10 TCID.sub.50/1.0 mL TCID.sub.50/1.0 mL (+) = Positive for the presence of test virus (0) = No test virus recovered and/or no cytotoxicity present (NT) = Not tested
Example 20
Efficacy of GR-01, GR-05, GR-08 and GR-24 Against Human African Trypanosomiasis Parasites
[0716] Minimum Essential Medium (50 l) supplemented according to Baltz et al. (1985) with 2-mercaptoethanol and 15% heat-inactivated horse serum was added to each well of a 96-well microtiter plate.
[0717] Serial drug dilutions were prepared covering a range from 90 to 0.123 g/ml.
[0718] Then 10 bloodstream forms of Trypanosoma b. rhodesiense STIB 900 in 50 l were added to each well and the plate incubated at 37 C. under a 5% CO.sub.2 atmosphere for 72 hours.
[0719] 10 l of Alamar Blue (12.5 mg resazurin dissolved in 100 mL distilled water) were then added to each well and incubation continued for a further 2-4 hours.
[0720] Then the plates were read with a Spectramax Gemini XS microplate fluorometer (Molecular Devices Cooperation, Sunnyvale, Calif., USA) using an excitation wave length of 536 nm and an emission wave length of 588 nm.
[0721] Data were analysed using the software Softmax Pro (Molecular Devices Cooperation, Sunnyvale, Calif., USA). Decrease of fluorescence (=inhibition) was expressed as percentage of the fluorescence of control cultures and plotted against the drug concentrations.
[0722] From the sigmoidal inhibition curves the IC50 values were calculated.
[0723] Cytotoxicity was assessed using the same assay and rat skeletal myoblasts (L-6 cells). The medium used for the L-6 cells was RPMI 1640 medium with 10% FBS and 2 mM L-glutamine.
TABLE-US-00061 TABLE 24a Total less Avg less 1 Avg less T.b. rhod. IC/50 most most 1 Relative Trial I II III IV V VI VII Total extreme extreme ng/ml Efficacy Solution 0.99 0.071 0.059 0.134 0.325 0.146 0.008 1.733 0.743 0.124 11 3 GR01 Solution 1.32 0.048 0.3 / / 0.055 / 1.723 0.403 0.134 13 4 GR05 Solution 1.53 0.061 / / / 0.092 / 1.683 0.153 0.051 4 1 GR08 Solution 0.344 0.054 0.06 / 0.41 0.083 / 0.951 0.541 0.135 17 5 GR24 Melarsoprol 3 ng/ml / 2 ng/ml / 5 ng/ml / / 10 mg/ml 3.33 Mel. = control IC50 expressed as % of the original solution received. / = no result
Example 21
Anti-Parasitic Efficacy of Solutions GR-01-GR-08
[0724] Efficacy testing of 10 solutions against the Plasmodium falciparum: (3D7 and Dd2 laboratory strains) occurred. The Anti-malarial activities of the ten solutions disclosed in Examples 1-5 (i.e., GR-01-GR-10) were investigated with the primary aim of identifying the most promising solution through in vitro efficacy testing. A second objective was to determine the anti-malarial activities of the same 10 solutions against two different strains of Plasmodium falciparum: (3D7 and Dd2 laboratory strains) and to document any observable effect on the human erythrocytes used in the cultivation of the parasites.
[0725] The results show that all 10 solutions tested (i.e., GR-01-GR-10) had anti-malarial activity with the effects being dose dependent. GR 08 had the best anti-malarial activity as it had the lowest IC.sub.50 concentrating against both strains of parasites (i.e., 3.1 against 3D7; and 3.4 against Dd2) used in this study in comparison with the other solutions.
Material and Methods
In Vitro Cultivation of Malaria Parasite
[0726] Two laboratory strains of malaria parasites, chloroquine sensitive (3D7) and chloroquine resistant (Dd2) were used for these in vitro studies. Parasites were cultivated using methods by Trager and Jensen (1976) with slight modifications. In brief, parasites were removed from liquid nitrogen and thawed in a water bath set at 37 C. and immediately centrifuged at 2000 rpm for 7 minutes and the supematants were discarded. Equal volumes of thawing mix (3.5% NaCl in distilled water) were added and centrifuged as above and the supernatant discarded. The cells were then washed two times in parasite culture medium and the cells added to a culture flask containing 5 ml parasite culture medium (RPMI 1640, L-glutamine, Gentamycin and Albumax) and 200 l of freshly washed human O+ red blood cells. The culture was then gassed for 30 seconds using a gas mixture containing Oxygen 2.0% Carbon dioxide 5.5% and the remainder Nitrogen. Cultures were maintained for at least two weeks continuously until a stable parasitaemia was obtained before being used for the efficacy assay.
Preparation of the 10 Solutions for the Inhibition Assay
[0727] Serial dilutions (2 fold) of each solution were prepared starting from 2 times dilution to 128 times dilution in parasite culture medium (RPMI 1640, L-glutamine, Gentamycin and Albumax). In other words, 100 l of test solution was used per milliliter of culture mixture giving a start concentration of 100 l test solution/ml of culture medium (100 l/ml). They were prepared prior to the start of the assays and kept refrigerated until they were ready to be used.
Plasmodium falciparum Inhibition Assays
[0728] The ten different solutions were investigated for their anti-malarial activities against two Plasmodium falciparum: parasite strains (3D7 and Dd2). Briefly, parasites were prepared from in vitro cultivation as described above. Into each well of a 24-well culture plates was added 40 l of O+ freshly washed RBC at 1.0% parasitaemia in 900 l of complete parasite medium. Into each of the wells, 100 l of the diluted test solutions (corresponding to 0.78 l, 1.56 l, 3.125 l, 6.25 l, 12.5 l, 25 l, 50 l, and 100 l of the undiluted solution), were added per ml of culture medium. Also included in each 24-well plate were wells containing 40 l of uninfected RBC plus 100 l of undiluted solution of each formulation and 40 l of infected RBC (1.0%) without any of the ten test solutions. Assays were performed in triplicates. The plates were then placed in a modular incubator chamber (California, USA) and gassed for 10 minutes using a special gas mixture (Oxygen 2.0% Carbon dioxide 5.5% and Nitrogen 92.5%). The chamber containing the plates was incubated at 37 C. for 48 hours. At approximately 48 hours cultures were removed and thin blood films prepared from each well on double frosted microscope slides. The slides were air-dried, fixed in methanol and stained with 10% giemsa in phosphate buffer.
Results and Discussion
[0729] The anti-malarial activities of all 10 solutions evaluated are shown in
[0730] Each of the 10 solutions also inhibited the growth of chloroquine sensitive strain of P falciparum (3D7) parasites. The highest concentration (100 l test solution/ml) of the test solutions recorded a maximum inhibition ranging between 71% and 85% (
[0731] The growth inhibition characteristics of the ten solutions were similar to that observed for chloroquine (
[0732] The concentration that inhibited the growth of each strain of P falciparum (3D7 and Dd2) by 50% (IC.sub.50) are presented in Table 25a. The IC.sub.50 values for the test solutions against chloroquine sensitive P falciparum (3D7) parasites ranged from 3.1 l/ml-6.2 l/ml. For chloroquine sensitive P falciparum (Dd2) parasites the IC.sub.50 ranged from 3.4 l/ml-7.9 l/ml. GR-08 recorded the lowest IC.sub.50 against both chloroquine sensitive and chloroquine resistant strains of the Plasmodium parasites.
TABLE-US-00062 TABLE 25a IC 50 of all 10 test solutions against the 2 strains of Plasmodium falciparum (3D7-chloroquine sensitive strain and Dd2-chloroquine-resistant strain) parasites Inhibition Concentration ( IC.sub.50 /ml) Solutions 3D7 Dd2 GR-01 GR 01 4.5 6.1 GR-02 GR 02 5.2 5.0 GR-03 GR 03 4.9 5.9 GR-04 GR 04 4.6 7.9 GR-05 GR 05 4.1 4.9 GR-06 GR 06 6.2 5.9 GR-07 GR 07 5.7 5.6 GR-08 GR 08 3.1 3.4 GR-09 GR 09 4.3 5.7 GR-10 GR 10 5.0 6.0
[0733] There were anti-malarial activities for all 10 test solutions. The anti-malarial effects were dose dependent. The 10 test solutions did not show observable adverse effects on infected and uninfected RBCs. GR-08 had the lowest IC.sub.50 against both chloroquine-resistant and chloroquine sensitive strains of Plasmodium parasites.
Example 22
Binding of Silver-Based Constituents in GR-05 to a Phospholipid Bilayer
[0734] This Example 22 demonstrates how the silver-based constituents in GR-05 bind to a lipid bilayer membrane. Briefly, large unilamellar vesicles were used as a membrane mimetic. Different amounts of vesicle solution were added to the GR-05 solution. After incubation of the mixture for about one hour, the vesicles were centrifugally spun down to a pellet, leaving unbound silver constituents in the supernatant. Next, the silver concentration (i.e., Ag ppm) in the supernatant was measured by the atomic absorbance spectrometer techniques discussed above herein. The measured concentration in the supernatant was compared to the silver concentration in the control solution, where no vesicles were added, to determine the amount of silver constituents from GR-05 that bound to the vesicles. Finally, the bound fraction of silver constituents was plotted against lipid concentration to determine the binding (equilibrium) constant.
[0735] Large unilamellar vesicles were prepared in the following manor: 50 mol % BrPC, 40 mol % POPC, 10 mol % POPG lipids, in original stock solution in chloroform, were mixed together and were dried under a flowing nitrogen stream. Lipids were purchased from Avanti Polar Lipids, Inc. (Alabaster, Ala.) and were used without further purification. POPC lipids (1-Palmitoyl-2-Oleoyl-sn-Glycero-3-Phosphocholine) are the most commonly used lipids for vesicle preparation. BrPC lipids (1,2-Dibromostearoyl-sn-Glycero-3-Phosphocholine) were used to make the vesicle bilayers more dense for easy centrifugal separation (i.e., spinning down). Negatively charged POPG lipids (1-Palmitoyl-2-Oleoyl-sn-Glycero-3-[Phospho-rac-(1-glycerol)] (Sodium Salt)) were used to mimic the negative charged bilayer membranes of bacteria. After the lipids were mixed together, they were rehydrated in deionized water to achieve a 5 mM total lipid concentration; and were extruded multiple times through a 0.1 m pore membrane (extruder and membranes were purchased from Avanti Polar Lipids, Inc., Alabaster, Ala.) thus forming large unilamellar vesicles.
[0736] The binding of lipids to silver constituents in GR-05 can be described in a first approximation with the following relationship:
where is the number of lipids L that bind to a silver constituent in GR-05, thus forming a lipid-silver complex L.sub.Ag.
[0737] The binding constant, or equilibrium constant, K is gven as:
where [L.sub.g] is a concentration of bound silver constant, [L] is the concentration of lipids, and [Ag] is the concentration of unbound silver constituent. Total silver concentration [T.sub.Ag] equals [L.sub.Ag] plus [Ag] and fraction of bound silver constituent .sub.B is given as:
[0738] While GR-05 also contains Zn-based constituents, as a first approximation, these were ignored for the purposes of this Example.
[0739]