Accurate mass

IUPAC RECOMMENDATIONS 2013
Accurate mass
Experimentally determined mass of an ion of known charge. Note 1: Can be used to determine elemental composition to within limits defined by both the accuracy and precision of the measurement. Note 2: Accurate mass and exact mass are not synonymous. Accurate mass refers to a measured mass, and exact mass refers to a calculated mass.
Related Term(s): exact mass
Reference(s): O. D. Sparkman. Mass Spec Desk Reference, Global View Publishing, Pittsburgh (2006). A. W. T. Bristow, K. S. Webb. J. Am. Soc. Mass Spectrom. 14, 1086 (2003). (DOI: 10.1016/S1044-0305(03)00403-3)
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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