Term: Donnan exclusion
https://doi.org/10.1351/goldbook.DT06889

Definition:
Reduction in concentration of mobile ions within an ion exchange membrane due to the presence of fixed ions of the same sign as the mobile ions.

Related Terms:
1) ion exchange (http://doi.org/10.1351/goldbook.I03167).
2) membrane (http://doi.org/10.1351/goldbook.MT06878).

Source: PAC, 1996, 68, 1479. 'Terminology for membranes and membrane processes (IUPAC Recommendations 1996)' on page 1488 (https://doi.org/10.1351/pac199668071479)

Citation: 'Donnan exclusion' 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.DT06889

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