09903 IUPAC Gold Book - peak width at base 10.1351/goldbook.09903 09903 current synonym: base width 1 Peak width at peak base intercepted by tangents to the chromatogram drawn at the inflection points on either side of the peak. Represented by the line AB in the peak height figure. PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 195 (https://doi.org/10.1515/pac-2017-0111) https://goldbook.iupac.org/terms/view/09903/html https://goldbook.iupac.org/terms/view/09903/json https://goldbook.iupac.org/terms/view/09903/plain Citation: 'peak width at base' 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.09903 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. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. 2026-07-24T18:51:29+00:00