Average mass

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Average mass
Mass of an ion or molecule weighted for its isotopic composition.
Related Term(s): monoisotopic mass, nominal mass

IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979. Compiled by J. Inczédy, T. Lengyel, A. M. Ure. Blackwell Scientific Publications, Oxford (1997). On-line corrected version: http://www.iupac.org /publications/analytical compendium (2000).

J. Yergey, D. Heller, G. Hansen, R. J. Cotter, C. Fenselau. Anal. Chem. 55, 353 (1983). (http://dx.doi.org/10.1021/ac00253a037 )

From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.

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