extraction

https://doi.org/10.1351/goldbook.E02301
distribution and partition are often used as synonyms for the general phenomenon of extraction where appropriate.
See: distribution, liquid-liquid extraction, partition
Source:
PAC, 1993, 65, 2373. 'Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)' on page 2377 (https://doi.org/10.1351/pac199365112373)