{"term":{"id":"08763","title":"specific activity (radionuclide)","longtitle":"IUPAC Gold Book - specific activity (radionuclide)","doi":"10.1351\/goldbook.08763","code":"08763","status":"current","definitions":[{"id":1,"text":"Activity of a specified radionuclide (\\(\\ce{R}\\)) per unit mass of that nuclide.","notes":{"1":"If the term 'specific activity' is used without qualification, it should be made clear whether it is of a material or of a radionuclide. See: specific activity of a radionuclide in a material."},"exams":{"1":"Specific activity of tritium (\\(\\ce{^{3}H}\\)) is \\(\\pu{3.57E17 Bq kg-1}\\) (\\(\\pu{9.65 Ci mg-1}\\))."},"contexts":{"1":"Specific activity of tritium (<span title=\"substance\">\\(\\ce{^{3}H}\\)<\/span>) is <span title=\"numeric value with unit\">\\(\\pu{3.57E17 Bq kg-1}\\)<\/span> (<span title=\"numeric value with unit\">\\(\\pu{9.65 Ci mg-1}\\)<\/span>)."},"sources":["PAC, 2021, 93, 69. 'Vocabulary of radioanalytical methods (IUPAC Recommendations 2020)' on page 103 (https:\/\/doi.org\/10.1515\/pac-2019-0302)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/08763\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/08763\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/08763\/plain"},"citation":"Citation: 'specific activity (radionuclide)' 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.08763","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":"2026-05-18T03:41:22+00:00"}}