目から鱗のマススペクトロメトリー第13回「精密質量」 : Accurate Mass ですか? Exact Mass ですか? [in Japanese] Comments on the Usage of the Terms "Accurate Mass" and "Exact Mass" [in Japanese]
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The terms "accurate mass" and "exact mass" are not synonymous in mass spectrometry. Accurate mass refers to the mass value of an ion or radical determined experimentally by mass spectrometry. On the other hand, exact mass refers to the mass value of a single ion, radical, or molecule calculated by summing the mass values of individual isotopes. To avoid confusion, "measured accurate mass" and "calculated exact mass" should be used in place of "accurate mass" and "exact mass," respectively.
- J. Mass Spectrom. Soc. Jpn.
J. Mass Spectrom. Soc. Jpn. 56(1), 27-32, 2008-02-01
The Mass Spectrometry Society of Japan