{"term":{"id":"03730","title":"mass resolving power","longtitle":"IUPAC Gold Book - mass resolving power","doi":"10.1351\/goldbook.M03730","code":"M03730","status":"current","definitions":[{"id":1,"text":"Commonly and also acceptably defined in terms of the overlap (or 'valley') between two peaks. Thus for two peaks of equal height, masses \\(m_{1}\\) and \\(m_{2}\\), when there is overlap between the two peaks to a stated percentage of either peak height (10% is recommended), then the resolving power is defined as \\(\\frac{m_{1}}{m_{1} - m_{2}}\\). The percentage overlap (or 'valley') concerned must always be stated.","contexts":[],"links":[{"term":"power","url":"https:\/\/goldbook.iupac.org\/terms\/view\/P04792"}],"sources":["PAC, 1978, 50, 65. 'Recommendations for Symbolism and Nomenclature for Mass Spectroscopy' on page 72 (https:\/\/doi.org\/10.1351\/pac197850010065)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/M03730\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/M03730\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/M03730\/plain"},"citation":"Citation: 'mass resolving power' 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.M03730","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":"2026-05-09T21:41:07+00:00"}}