14719 IUPAC Gold Book - global fractionation 10.1351/goldbook.14719 14719 current 1 Process by which some persistent organic pollutants (POPs) move more rapidly than others toward the polar regions. Because POPs differ in their individual rates of degradation, vapor pressure, and lipophilicity, a fractionation occurs. The net result is a redistribution of the different POPs from the equator or site of origin toward the cold polar regions of the Earth. persistent organic pollutants https://goldbook.iupac.org//terms/view/14909 PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 891 (https://doi.org/10.1351/PAC-REC-08-07-09) https://goldbook.iupac.org/terms/view/14719/html https://goldbook.iupac.org/terms/view/14719/json https://goldbook.iupac.org/terms/view/14719/plain Citation: 'global fractionation' 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.14719 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. 2026-06-10T18:49:05+00:00