non-ideal, non-linear chromatography

Chromatographic process, where both isotherm curvature and other peak-broadening processes (such as diffusion) contribute to the peak shape.
Note:
This case comprises most peaks in common practice that are characterised as 'tailing' or 'fronting'.
Source:
PAC, 1996, 68, 1591 (Nomenclature for non-linear chromatography (IUPAC Recommendations 1996)) on page 1594