Title: substoichiometric isotope dilution analysis
Long Title: IUPAC Gold Book - substoichiometric isotope dilution analysis
DOI: 10.1351/goldbook.S06081
Status: current

Definition
A kind of isotope dilution analysis in which the final isotopic abundance is estimated from the amount of the nuclide present in a known quantity of the relevant element separated from the test portion, where this quantity is smaller than the total amount of that element present in the test portion.

Related Terms
- isotope dilution analysis: https://goldbook.iupac.org//terms/view/I03323
- isotopic abundance: https://goldbook.iupac.org//terms/view/I03332
- nuclide: https://goldbook.iupac.org//terms/view/N04257
- test portion: https://goldbook.iupac.org//terms/view/T06284

Source
- PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2521 (https://doi.org/10.1351/pac199466122513)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/S06081/html
- json: https://goldbook.iupac.org/terms/view/S06081/json
- xml: https://goldbook.iupac.org/terms/view/S06081/xml

Citation: Citation: 'substoichiometric isotope dilution analysis' 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.S06081
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Accessed: 2026-08-02T00:23:38+00:00