adsorption
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GC: n

S: SDir – http://www.sciencedirect.com/science/article/pii/S0038092X1300529X (last access: 26 October 2013); RESG – https://www.researchgate.net/publication/274391519_ADSORPTION (last access: 4 March 2020).

N: 1. adsorption, capability of all solid substances to attract to their surfaces molecules of gases or solutions with which they are in contact. Solids that are used to adsorb gases or dissolved substances are called adsorbents; the adsorbed molecules are usually referred to collectively as the adsorbate. An example of an excellent adsorbent is the charcoal used in gas masks to remove poisons or impurities from a stream of air.
Adsorption refers to the collecting of molecules by the external surface or internal surface (walls of capillaries or crevices) of solids or by the surface of liquids.
2. From Latin ad- to + sorption. The attachment of one substance to the surface of another; the concentration of a gas or a substance in solution in a liquid on a surface in contact with the gas or liquid, resulting in a relatively high concentration of the gas or solution at the surface.

S: 1. EncBrit – http://global.britannica.com/science/adsorption (last access: 22 November 2013). 2. DORLAND p. 33.

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CR: atom, ion, molecule.