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E. D. Viryus, I. A. Revelískii, I. N. Glazkov, A. A. Martynov, D. A. Chepelaynskii

Identification of traces of components of complex mixtures with unknown composition by chromato-mass-spectrometry and tandem mass-spectrometry

Abstract

Method based on use GC-MS-MS with low energy electron impact ionization (30 eV), on choice of molecular ions as parent ions, on ranking daughters ions in accordance with their relative intensities in mass-spectra and computer-searching based on ranking ions was proposed.It was shown that results of the identification of unknown mixtures compounds obtained using were completely identical to obtained using commonly used GC/MS method with electron impact ionization (70 eV). Besides that, this method provides the possibility of identification a larger number of compounds in unknown complex mixtures in comparison with common GC-MS method due to decreasing of noise level.
Moscow University Chemistry Bulletin.
2001, Vol. 42, No. 6, P. 418
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
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