adsorption isotherm

in chromatography
https://doi.org/10.1351/goldbook.AT06934
Isotherm describing adsorption of the sample component on the surface of the stationary phase from the mobile phase.
Source:
PAC, 1996, 68, 1591. 'Nomenclature for non-linear chromatography (IUPAC Recommendations 1996)' on page 1592 (https://doi.org/10.1351/pac199668081591)
This definition replaces an earlier definition of adsorption isotherm.