05926 IUPAC Gold Book - standard subtraction method 10.1351/goldbook.S05926 S05926 current 1 A variation of the standard addition method. In this procedure changes in the potential resulting from the addition of a known amount of a species which reacts stoichiometrically with the ion of interest (e.g. a complexing agent) are employed to determine the original activity or concentration of the ion. Orange Book, 2nd ed., p. 171 (https://media.iupac.org/publications/analytical_compendium/) https://goldbook.iupac.org/terms/view/S05926/html https://goldbook.iupac.org/terms/view/S05926/json https://goldbook.iupac.org/terms/view/S05926/plain Citation: 'standard subtraction method' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.S05926 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-07-02T07:42:59+00:00