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Electron ionization mass spectral fragmentation of deoxynivalenol and related tricothecenes
Author(s) -
RodriguesFo Edson,
Mirocha C. J.,
Xie Weiping,
Krick Thomas P.,
Martinelli J. A.
Publication year - 2002
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.796
Subject(s) - chemistry , electron ionization , fragmentation (computing) , trichothecene , mass spectrometry , mass spectrum , chemical ionization , mycotoxin , trimethylsilyl , analytical chemistry (journal) , ion , chromatography , ionization , gas chromatography , organic chemistry , food science , computer science , operating system
Careful analysis of the electron impact (EI) mass spectral data obtained for the trimethylsilyl (TMS) ethers of known trichothecene mycotoxins of the deoxynivalenol group permitted the construction of a database useful for the identification of these mycotoxins directly from a gas chromatography/mass spectrometry (GC/MS) run. Structures of the ions at m/z 103, 117, 147 and 191 were elucidated by high‐resolution mass spectrometry (HRMS) and a fragmentation scheme was suggested. The relative abundances of these ions in the mass spectra of the trichothecenes allowed a fast structural diagnosis during analysis of biological matrices. A new mycotoxin of this group, 3‐acetylnivalenol, was tentatively identified by using MS data interpretation only. Copyright © 2002 John Wiley & Sons, Ltd.