An adsorption structure unit prevents water leakage from an adsorption structure and improves the durability of the adsorption structure and the durability of the adsorption structure unit. An adsorption structure has a filter portion having a plurality of flow paths divided by a plurality of partition walls and a plugged portion shutting a feed water inflow or outflow end of the plurality of flow paths, a water-impermeable outer tube accommodating the filter portion, and a seal material blocking a gap between the filter portion and the outer tube in at least one end portion of the filter portion. An adsorption structure unit has the adsorption structure, a housing supplying feed water from one end of the adsorption structure, and discharging the feed water from the other end, and a ring member disposed between end portions on both sides of the outer tube and an inner surface of the housing.

Methods of producing and isolating .sup.68Ga, .sup.89Zr, .sup.64Cu, .sup.63Zn, .sup.86Y, .sup.61Cu, .sup.99mTc, .sup.45Ti, .sup.13N, .sup.52Mn, or .sup.44Sc and solution targets for use in the methods are disclosed. The methods of producing .sup.68Ga, .sup.89Zr, .sup.64Cu, .sup.63Zn, .sup.86Y, .sup.61Cu, .sup.99mTc, .sup.45Ti, .sup.13N, .sup.52Mn, or .sup.44Sc include irradiating a closed target system with a proton beam. The system can include a solution target. The methods of producing isolated .sup.68Ga, .sup.89Zr, .sup.64Cu, .sup.63Zn, .sup.86Y, .sup.61Cu, .sup.99mTc, .sup.45Ti, .sup.52Mn, or .sup.44Sc further include isolating .sup.68Ga, .sup.89Zr, .sup.64Cu, .sup.63Zn, .sup.86Y, .sup.61Cu, .sup.99mTc, .sup.45Ti, .sup.52Mn, or .sup.44Sc by ion exchange chromatography. An example target includes a target body including a target cavity for receiving the target material; a housing defining a passageway for directing a particle beam at the target cavity; a target window for covering an opening of the target cavity; and a coolant gas flow path disposed in the passageway upstream of the target window.

Provided is a particulate alkaline earth metal ion adsorbent having a large adsorption capacity. The particulate alkaline earth metal ion adsorbent comprising: a potassium hydrogen dititanate hydrate represented by a chemical formula K.sub.2-xH.sub.xO.2TiO.sub.2.nH.sub.2O, wherein x is 0.5 or more and 1.3 or less, and n is greater than 0; and no binder, wherein the particulate alkaline earth metal ion adsorbent has a particle size range of 150 m or more and 1000 m or less.

A silica aggregate includes primary silica particles aggregated, the primary silica particles having an average particle size of 1 nm or more and less than 10 nm, the primary silica particles being crosslinked to each other by a bond containing a siloxane bond.

Sorbent materials that are treated with ions, salts, oxides, hydroxides, or carbonates of calcium, magnesium, strontium, or barium are useful in removing perfluoroalkyl and polyfluoroalkyl substances (PFAS), perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), 2,3,3,3,-tetrafluoro-2-(heptafluoropropoxy)propanoate and heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether, and similar compounds from liquids and gases are disclosed. The sorbent materials with the disclosed treatments offer improved performance as measured against untreated sorbent materials.

An adsorbent to be packed into a canister, at least containing activated carbon and an additive material that has a higher heat capacity than the activated carbon. The adsorbent has first pores derived from the activated carbon that are less than 100 nm and second pores derived from meltable cores that are 1 m or more. The adsorbent is in the form of a hollow molded body having an outer diameter of more than 6 mm and not more than 50 mm and including a cylindrical wall and honeycomb walls each having a thickness of not less than 0.2 mm and not more than 1 mm. The adsorbent has a volumetric specific heat of 0.08 kcal/L.Math. C. or more. The ratio of the volume of the second pores to the volume of the first pores is not less than 10% and not more than 200%.

Polymeric adsorbents useful for solid phase extraction (SPE) comprising a copolymer formed by copolymerizing at least one hydrophobic monomer including divinylbenzene and at least one hydrophilic monomer including acrylonitrile are provided. Also provided are SPE cartridges including a divinylbenzene-acrylonitrile hydrophilic-lipophilic balance adsorbent. Further provided are methods of using a divinylbenzene-acrylonitrile hydrophilic-lipophilic balance adsorbent in conventional and simplified SPE techniques.

A chromatography carrier may exhibit high liquid permeability and an excellent pressure-resistant characteristic during liquid passage. A chromatography carrier production method may include: (1) providing a solid phase support, the solid phase support being formed of porous particles on which a ligand has or has not been immobilized; and (2) subjecting the solid phase support to sieve classification, the coefficient of variation of the volume particle size distribution of the porous particles when a ligand has been immobilized being adjusted to 1% to 22%. The skewness of the volume particle size distribution of the porous particles when a ligand has been immobilized may be adjusted to ?0.1 to 5.

The present invention provides a functionalised polymeric chromatography medium, prepared by a process which comprises (i) providing a substrate formed of one or more polymer nanofibres, (ii) grafting one or more neutral polymer chains from the substrate, and (iii) contacting the grafted product with a reagent which functionalises the product of step (ii) as a chromatography medium, wherein step (ii) comprises reacting a plurality of compounds of formula and/or its enantiomers, and/or its derivatives of formula (I) and/or enantiomers and/or diastereomers thereof: with one or more functional groups present on the nanofibre substrate, wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 may be the same or different, and are chosen from H, halogen, C.sub.1-C.sub.4 alkyl, or C.sub.1-C.sub.4 alkoxy provided that at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4 or R.sub.5 is not hydrogen.

##STR00001##

Particle loading assembly and method for loading particles into a vessel to form a densely packed particle bed comprising an inner layer of particles and an outer layer of particles. The inner layer of particles is arranged radially and concentric with the outer layer of particles. The inner layer of particles contains at least a first type of particle of different granulometry or range of composition or both granulometry and range of composition from a second type of particles contained in the outer layer.