Title: convex isotherm
Long Title: IUPAC Gold Book - convex isotherm
DOI: 10.1351/goldbook.CT06937
Status: current

Definition
Distribution isotherm, the slope of which is continuously decreasing.

Note
The resulting chromatographic peak is tailing. Adsorption isotherms are often of this type. A special case is the Langmuir adsorption isotherm.

Related Terms
- Distribution isotherm: https://goldbook.iupac.org/terms/view/DT06932
- tailing: https://goldbook.iupac.org/terms/view/T06249

Source
- PAC, 1996, 68, 1591. 'Nomenclature for non-linear chromatography (IUPAC Recommendations 1996)' on page 1593 (https://doi.org/10.1351/pac199668081591)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/CT06937/html
- json: https://goldbook.iupac.org/terms/view/CT06937/json
- xml: https://goldbook.iupac.org/terms/view/CT06937/xml

Citation: Citation: 'convex isotherm' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.CT06937
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Accessed: 2026-06-30T21:10:53+00:00