concave isotherm
in chromatography
Distribution isotherm, the slope of which is continuously increasing.
Note:
The resulting chromatographic peak is fronting. In gas-liquid chromatography, overloading often results in a concave isotherm.
Source:
PAC, 1996, 68, 1591 (Nomenclature for non-linear chromatography (IUPAC Recommendations 1996)) on page 1593