https://w3id.org/geochem/1.0/analyticalmethod/adsorptionanalysis
label | Adsorption analysis | |||||
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notation | ADS | |||||
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definition | The gas adsorption technique may used to measure the specific surface area and pore size distribution of powdered or solid materials. The dry sample is usually evacuated of all gas and cooled to a temperature of 77K, the temperature of liquid nitrogen. At this temperature inert gases such as nitrogen, argon and krypton will physically adsorb on the surface of the sample. This adsorption process can be considered to be a reversible condensation or layering of molecules on the sample surface during which heat is evolved. Nitrogen gas is ideal for measuring surface area and pore size distribution. (http://www.cyto.purdue.edu/cdroms/cyto2/6/coulter/ss000107.htm) | |||||
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in scheme | Analytical methods for geochemistry and cosmochemistry original | |||||
is defined by | Analytical methods for geochemistry and cosmochemistry original | |||||
see also | Analytical methods for geochemistry and cosmochemistry original |