B American Society for Mass Spectrometry, 2017 J. Am. Soc. Mass Spectrom. (2017) 28:2726Y2727 DOI: 10.1007/s13361-017-1802-0 COMMENT AND REPLY Reply to the Comment on: a molecule or ion is equivalent to the sum of the atomic masses BNominal Mass?^ by Athula B. Attygalle and Julius of the most abundant stable isotopes. Thus, ThF is a molecule Pavlov, J. Am. Soc. Mass Spectrom. 28, 1737-1738 (2017) without a monoisotopic mass as well. Another instance where the current definition of Bnominal mass^ adds to the confusion is XeCl (Figure 1). Granted that rom the BComment on: Nominal Mass?^ made by Kermit by the current definition the nominal mass of Xe is 132, and that FK. Murray , it is evident that the definition we proposed of Cl 35, the nominal mass of XeCl is 132 +(2 ×35) =202  for the term Bnominal mass^ needs further clarification. Our attempt was to formulate a universal definition applicable to because according to row 2 of Murray’sTable 1, it should be the any isotope or isotopologue, irrespective of stability, natural Bsum of the nominal masses of the most abundant stable abundance, or origin (natural or man-made). According to the isotopes^. Ironically, the peak at
Journal of The American Society for Mass Spectrometry – Springer Journals
Published: Oct 16, 2017
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