Title: charring Long Title: IUPAC Gold Book - charring DOI: 10.1351/goldbook.C01010 Status: current Definition Pyrolysis of samples containing organic matter. In the presence of oxygen this is referred to as ashing. Related Terms - Pyrolysis: https://goldbook.iupac.org//terms/view/P04961 - ashing: https://goldbook.iupac.org//terms/view/A00468 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 256 (https://doi.org/10.1351/pac199264020253) Other Outputs - html: https://goldbook.iupac.org/terms/view/C01010/html - json: https://goldbook.iupac.org/terms/view/C01010/json - xml: https://goldbook.iupac.org/terms/view/C01010/xml Citation: Citation: 'charring' 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.C01010 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: 2026-04-21T03:57:15+00:00