Title: pH-zone-refining counter-current chromatography
Long Title: IUPAC Gold Book - pH-zone-refining counter-current chromatography
DOI: 10.1351/goldbook.09947
Status: current

Definition
Counter-current chromatography that produces a train of fused rectangular solute peaks called pH-zones, each with its specific pH. Each zone contains highly concentrated solute, often near saturation level, and is separated from the neighbouring zone by a narrow strip called a mixing zone, which contains a mixture of impurities.

Related Term
- Counter-current chromatography: https://goldbook.iupac.org//terms/view/09887

Source
- PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 205 (https://doi.org/10.1515/pac-2017-0111)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/09947/html
- json: https://goldbook.iupac.org/terms/view/09947/json
- xml: https://goldbook.iupac.org/terms/view/09947/xml

Citation: Citation: 'pH-zone-refining counter-current chromatography' 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.09947
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Accessed: 2026-04-18T06:27:30+00:00