Term: scrubbing
https://doi.org/10.1351/goldbook.S05511

Definition:
The process of selectively removing contaminating solutes (impurities) from an extract that contains these as well as the main extractable solute by treatment with a new immiscible liquid phase. The term stripping has a different meaning and should not be used in this sense although this usage has been customary in certain industries. 

Related Terms:
1) crowding, stripping (<em>in solvent extraction</em>) (http://doi.org/10.1351/goldbook.C01420).
2) stripping (<em>in solvent extraction</em>) (http://doi.org/10.1351/goldbook.S06054).

Source: PAC, 1993, 65, 2373. 'Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)' on page 2388 (https://doi.org/10.1351/pac199365112373)

Citation: 'scrubbing' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.S05511

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