09899 IUPAC Gold Book - cross-sectional area of the column 10.1351/goldbook.09899 09899 current 1 Cross-sectional area of the empty tube: \(A_{\rm{c}} = \pi r_{\rm{c}}^{2} = \pi (d_{\rm{c}}/2)^{2}\), where \(d_{\rm{c}}\) is the column diameter. column diameter https://goldbook.iupac.org/terms/view/09897 PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 191 (https://doi.org/10.1515/pac-2017-0111) https://goldbook.iupac.org/terms/view/09899/html https://goldbook.iupac.org/terms/view/09899/json https://goldbook.iupac.org/terms/view/09899/plain Citation: 'cross-sectional area of the column' 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.09899 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. 2026-07-27T04:26:57+00:00