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Multiply charged ions in ionspray tandem mass spectrometry
Author(s) -
Siu K. W. M.,
Gardner G. J.,
Berman S. S.
Publication year - 1989
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210241015
Subject(s) - ion , tandem mass spectrometry , mass spectrometry , chemistry , tandem , mass spectrum , chromatography , materials science , organic chemistry , composite material
Multiply charged anions of some 30 species containing multiple carboxylic, sulphonic and/or phosphoric groups generated by ionspray were studied by using tandem mass spectrometry (MS/MS). Two trends emerged: (1) lower‐charged ions are preferentially evaporated, and (2) for more highly charged ions, evaporability is a function of ion size. Triply and quadruply charged ions were observed for azo dyes with molecular masses in the 700‐900 Dalton range. Daughter‐ion mass spectra of selected multiply charged ions are presented.