co-ions 

https://doi.org/10.1351/goldbook.C01141
  1. Ions of low relative molecular mass with a charge of the same sign as that of a given colloidal ion.
    Source:
    PAC, 1972, 31, 577. (Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry) on page 607 [Terms] [Paper]
  2. In an ion exchanger, mobile ionic species with a charge of the same sign as the fixed ions.
    Source:
    Orange Book, 2nd ed., p. 88 [Terms] [Book]
Citation: 'co-ions' 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.C01141 RIS BibTex EndNote
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Last revised: February 24, 2014