{"term":{"id":"15954","title":"organic carbon partition coefficient","longtitle":"IUPAC Gold Book - organic carbon partition coefficient","doi":"10.1351\/goldbook.15954","code":"15954","status":"current","definitions":[{"id":1,"text":"Measure of the tendency for organic substances to be adsorbed by soil or sediment, expressed as: \\[K_{\\rm{oc}} = \\frac{(\\ce{mass adsorbed substance})\/(\\ce{mass organic carbon})}{(\\ce{mass concentration of absorbed substance})}\\]","notes":{"1":"The \\(K_{\\rm{oc}}\\) is substance-specific and is largely independent of soil properties."},"sources":["PAC, 2007, 79, 1153. 'Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)' on page 1276 (https:\/\/doi.org\/10.1351\/pac200779071153)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/15954\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/15954\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/15954\/plain"},"citation":"Citation: 'organic carbon partition coefficient' 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.15954","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":"2026-07-24T19:21:02+00:00"}}