Title: carbon loading Long Title: IUPAC Gold Book - carbon loading DOI: 10.1351/goldbook.CT06917 Status: current Definition Mass fraction of the packing material which is carbon. Usually taken as a guide to the extent of alkyl substitution on the surface. Usually reported as percentage carbon determined using elemental analysis. Related Terms - Mass fraction: https://goldbook.iupac.org//terms/view/M03722 - packing material: https://goldbook.iupac.org//terms/view/P04394 Source - PAC, 1997, 69, 1475. 'Classification and characterization of stationary phases for liquid chromatography: Part I. Descriptive terminology (IUPAC Recommendations 1997)' on page 1477 (https://doi.org/10.1351/pac199769071475) Other Outputs - html: https://goldbook.iupac.org/terms/view/CT06917/html - json: https://goldbook.iupac.org/terms/view/CT06917/json - xml: https://goldbook.iupac.org/terms/view/CT06917/xml Citation: Citation: 'carbon loading' 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.CT06917 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: 2026-04-19T01:08:01+00:00