Title: average matrix relative sensitivity factor Long Title: IUPAC Gold Book - average matrix relative sensitivity factor DOI: 10.1351/goldbook.09310 Status: current Definition Coefficient, proportional to the intensity, calculated for an element in an average matrix, by which the measured intensity for that element is divided in calculations to yield the atomic concentration or atomic fraction of the element present in the sample. Note The choice of atomic concentration or atomic fraction should be made clear. Source - PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1821 (https://doi.org/10.1515/pac-2019-0404) Other Outputs - html: https://goldbook.iupac.org/terms/view/09310/html - json: https://goldbook.iupac.org/terms/view/09310/json - xml: https://goldbook.iupac.org/terms/view/09310/xml Citation: Citation: 'average matrix relative sensitivity factor' 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.09310 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: 2026-07-26T00:21:23+00:00