The equilibrium relation between the concentration of a sample
component in the
stationary phase
, and in the
mobile phase
, expressed as a function
.
Note:
The relation can be influenced also by concentrations of
other sample components.
and
are usually expressed per
unit volume of the phase;
may also be expressed per mass of
the dry solid phase or per unit surface area.
In some versions of
chromatography, a distribution isotherm can be
seen as a
partition isotherm, an
adsorption isotherm, or a combination
of these, depending on the mechanism of separation.
Source:
PAC, 1996, 68, 1591
(Nomenclature for non-linear chromatography (IUPAC Recommendations 1996))
on page 1592
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
doi:10.1351/goldbook.
in liquid-liquid distribution
