partition isotherm

in chromatography
https://doi.org/10.1351/goldbook.PT06933
Isotherm describing partition of the sample component between the bulk of a liquid stationary phase and a liquid, gaseous or supercritical mobile phase.
Source:
PAC, 1996, 68, 1591. 'Nomenclature for non-linear chromatography (IUPAC Recommendations 1996)' on page 1592 (https://doi.org/10.1351/pac199668081591)