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Analysis of cyanoacrylate ultraviolet absorbers using liquid chromatography/atmospheric pressure chemical ionization mass spectrometry: influence of fragmentor voltage and solvent on ionization and fragmentation behaviors
Author(s) -
Choi SungSeen,
Song Min Ju
Publication year - 2008
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.3650
Subject(s) - chemistry , atmospheric pressure chemical ionization , fragmentation (computing) , solvent , mass spectrometry , chloroform , chemical ionization , ion , analytical chemistry (journal) , ionization , ion source , acetone , chromatography , organic chemistry , computer science , operating system
Ionization efficiencies and fragmentation patterns of cyanoacrylate ultraviolet (UV) absorbers, Uvinul 3035 and Uvinul 3039, were studied using liquid chromatography/atmospheric pressure chemical ionization mass spectrometry (LC/APCI‐MS). Solvent effect on the ionization efficiencies was investigated using methanol, ethanol, acetone, and chloroform. The fragmentation patterns were also investigated by varying the fragmentor voltage. Solvated ions, the [M+H + solvent] + of methanol, ethanol, and acetone were detected, but the [M+H + chloroform] + ion was not observed. For Uvinul 3039 in chloroform, the [M+CHCl 2 ] + ion was detected instead of the solvated ion. Relative abundance of the solvated ion was decreased by increasing the fragmentor voltage. Fragment ions of m/z 250, 232, and 204 were detected and their abundance increased with an increase in the fragmentor voltage. The m/z 250 ion can be accounted for by a McLafferty rearrangement. The fragment ions of m/z 232 and 204 were formed not only by subsequent fragmentations of the m/z 250 ion, but also by ion‐molecule reactions of solvent ion and neutral analyte. Copyright © 2008 John Wiley & Sons, Ltd.