Title: chemiluminescent methods of detection Long Title: IUPAC Gold Book - chemiluminescent methods of detection DOI: 10.1351/goldbook.C01047 Status: current Definition Methods which utilize gas or liquid phase reactions between two molecules which produce a third molecule in an excited state. The wavelength distribution of the light emission from the excited molecule is characteristic of the species; in some circumstances this may be used to identify and to determine the concentration of one of the reacting species. Related Terms - excited state: https://goldbook.iupac.org//terms/view/E02257 - wavelength: https://goldbook.iupac.org//terms/view/W06659 Source - PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2179 (https://doi.org/10.1351/pac199062112167) Other Outputs - html: https://goldbook.iupac.org/terms/view/C01047/html - json: https://goldbook.iupac.org/terms/view/C01047/json - xml: https://goldbook.iupac.org/terms/view/C01047/xml Citation: Citation: 'chemiluminescent methods of detection' 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.C01047 License: 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. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: 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. Accessed: 2026-05-09T03:41:19+00:00