A term describing the co-operative effect of two (or more) extractants where the distribution ratio for the combination is greater than the largest individual distribution ratio (measured under comparable conditions).
Notes: - The corresponding adjective is synergic and the term synergistic should not be used.
- No standard method for quantification of the phenomenon has been agreed and any approach should be clearly defined in a given situation.
Source:
PAC, 1993, 65, 2373. 'Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)' on page 2379 (https://doi.org/10.1351/pac199365112373)