Device for solid-phase microextraction and analysis of substances to be analyzed, in particular in a gas chromatograph, with at least one collector, which is made of sorbent and/or adsorbent material and is placed on a rod-like support, and with at least one sample container, which is sealed with a pierceable partition wall and into which the collector is introduced piercing the partition wall for a sampling time, wherein the sealing of the sample container is assembled from the pierceable partition wall and a clamping ring, which can be mounted on the sample container and presses the partition wall together with a sealing element onto an upper rim of the sample container, and which comprises a socket in which a fitting of a transport adapter which is attached to a handling end of the rod-like support can be anchored detachably and with sealing surface pressure after the collector is inserted into the sample container following piercing the partition wall.

The invention concerns high-performance adsorbents based on activated carbon of high meso- and macroporosity which are present in the form of discrete grains of activated carbon, wherein: at least 55% of the total pore volume of the high-performance adsorbents are formed by pores (i.e. meso- and macropores) having pore diameters of more than 20 , the high-performance adsorbents have a measure of central tendency pore diameter of more than 25 , and the high-performance adsorbents have a BET surface area of at least 1250 m.sup.2/g. These high-performance adsorbents are obtainable by a novel process comprising specific two-stage activation, and have, in addition to the aforementioned properties, an excellent abrasion and bursting resistance, so that they are useful for a multiplicity of different applications.

An assembly for a vapor provision device comprises includes a vapor generator for vaporizing source liquid, a liquid conduit for delivering source liquid from a reservoir to the vapor generator, and a liquid capture element in liquid transfer contact with at least a portion of the liquid conduit between the vapor generator and a part of the liquid conduit that receives liquid from the reservoir, and including an absorbent structure providing a lower capillary force than a capillary force of the liquid conduit.

An assembly for a vapor provision device includes a reservoir for storing source liquid; a liquid conduit for delivering the source liquid from the reservoir to a vapor generator for vaporizing the source liquid; and a liquid capture element in liquid transfer contact with at least a portion of the liquid conduit between the vapor generator and a part of the liquid conduit that receives liquid from the reservoir, and including an absorbent structure providing a higher capillary force than a capillary force of the reservoir.

Copper adsorbents which are resistant to the reduction by the components of the synthesis gas at normal operation conditions. The adsorbents are produced by admixing small amounts of an inorganic halide, such as NaCl, to the basic copper carbonate precursor followed by calcination at a temperature sufficient to decompose the carbonate. The introduction of the halide can be also achieved during the forming stage of adsorbent preparation. These reduction resistant copper oxides can be in the form of composites with alumina and are especially useful for purification of synthesis gas and the removal of mercury, arsine, phosphine, as well as hydrogen sulfide.

EMM-26 is a novel synthetic crystalline material having a single crystalline phase with a unique T-atom connectivity and X-ray diffraction pattern which identify it as a novel material. EMM-26 has a two-dimensional pore system defined by 10-membered rings of tetrahedrally coordinated atoms having pore dimensions of 6.3 3.2 . EMM-26 may be prepared with a organic structure directing agent, such as 1,6-bis(N-methylpyrrolidinium) hexane dications and/or 1,6-bis(N-methylpiperidinium) hexane dications. EMM-26 may be used in organic compound conversion and/or sorptive processes.

The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.

The present application provides a method for preparing lanthanide fluoride two-dimensional porous nanosheets and belongs to the field of novel materials. In the present application, mixing a water-soluble lanthanide metal salt and an aqueous solution of sodium acetate in a nitrogen atmosphere to obtain a mixed solution, and adding an aqueous solution of fluorine-containing salt to the mixed solution obtained for precipitation reaction to produce lanthanide fluoride two-dimensional porous nanosheets. In the preparation process provided by the present application, no additional surfactant or template agent needs to be added, the pollution of the surfactant to the surface of the prepared material is avoided and the tedious after-treatment steps to template agent are reduced. Accordingly, the large-scale production can be realized, and the lanthanide fluoride two-dimensional porous nanosheets constructed by nanoparticles are prepared in large scale by one step. Moreover, no other organic solvents are required, and the pollution to the environment during the preparation process is avoided.

The invention relates to an on-site medical gas production plant (100) comprising a unit (50) for purifying gas, such as air, a first compartment (A) for storing purified gas, and a main gas line (10) fluidically connecting the gas purification unit (50) to the said first storage compartment (A). It furthermore comprises an actuated valve (304) arranged on the main gas line (10) upstream of the first storage compartment (A), and furthermore connected to the secondary purifying device (306), as well as an operating device (4) which controls at least the actuated valve (304), and at least a gas analysis device (D2) in fluid communication with the main line (10), and which is in communication with said operating device (4).

The present invention relates to a carbon dioxide absorbent used for absorbing carbon dioxide, a carbon dioxide absorbent composition used for producing the carbon dioxide absorbent, and a solid raw material for a carbon dioxide absorbent included in the carbon dioxide absorbent.