Ion identification in EI mass spectra of tetraalkyltins using chemometric approach based on isotope pattern

Analysis of El mass spectra of R(4)Sn organotins series (R = Me, Et, Pr, iso-Pr, Bu, iso-Bu) performed in this work by means of alternative chemometric procedure BCA (band composition analysis) based on isotope profiles, confirmed the presence of almost all ions identified earlier in these spectra using other methods, like standard interpretation procedure or tandem mass spectrometry. BCA successfully determined ions in both simple and complex band of the spectra, which are often complicated by the effect of signal overlapping or presence of signals having incorrect intensities. Some interesting fragmentation trends for organotins having n- or iso- structure of R substituents were disclosed. (C) 2009 Elsevier B.V. All rights reserved.