Title: isotopic ion
Long Title: IUPAC Gold Book - isotopic ion
DOI: 10.1351/goldbook.I03344
Status: current

Definition
Any ion containing one or more of the less abundant naturally occurring isotopes of the elements that make up its structure, e.g. $\ce{CH2D^{+}}$.

Related Term
- isotopes: https://goldbook.iupac.org//terms/view/I03331

Sources
- Orange Book, 2nd ed., p. 205 (https://media.iupac.org/publications/analytical_compendium/)
- PAC, 1991, 63, 1541. 'Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)' on page 1549 (https://doi.org/10.1351/pac199163101541)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/I03344/html
- json: https://goldbook.iupac.org/terms/view/I03344/json
- xml: https://goldbook.iupac.org/terms/view/I03344/xml

Citation: Citation: 'isotopic ion' 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.I03344
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Accessed: 2026-06-30T05:14:06+00:00