Title: characteristic mass for peak absorption Long Title: IUPAC Gold Book - characteristic mass for peak absorption DOI: 10.1351/goldbook.C00979 Status: current Index: quantity Definition That mass of analyte which produces a defined peak absorbance of 0.0044 (or 1% absorbance). Related Term - absorbance: https://goldbook.iupac.org//terms/view/A00028 Source - PAC, 1992, 64, 253. 'Nomenclature, symbols, units and their usage in spectrochemical analysis - XII. Terms related to electrothermal atomization (IUPAC Recommendations 1992)' on page 258 (https://doi.org/10.1351/pac199264020253) Other Outputs - html: https://goldbook.iupac.org/terms/view/C00979/html - json: https://goldbook.iupac.org/terms/view/C00979/json - xml: https://goldbook.iupac.org/terms/view/C00979/xml Citation: Citation: 'characteristic mass for peak absorption' 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.C00979 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: 2026-04-21T06:48:59+00:00