Tandem mass spectrometric analysis of quaternary ammonium pesticides

Rapid Communications in Mass Spectrometry : RCM
C S EvansBrendan J Keely

Abstract

A detailed MS(n) study on an ion trap instrument of the quaternary ammonium pesticides paraquat, diquat, difenzoquat, mepiquat and chlormequat reveals a number of ions not reported previously, and has allowed examination of the fragmentation pathways. A number of transitions that are highly specific to each quat have been identified. Optimal ion trap operating conditions determined using Simplex optimisation can promote either detection of a particular fragmentation transition or a range of MS/MS product ions with a high overall signal response. Thus, fragmentation conditions were optimised to enhance the specificity or sensitivity of MS/MS methods.

References

Dec 1, 1987·Biomedical & Environmental Mass Spectrometry·Y TondeurJ R Donnelly
Aug 6, 1998·Journal of the American Society for Mass Spectrometry·V Y TaguchiD T Wang
Sep 1, 1996·Journal of the American Society for Mass Spectrometry·X Song, W L Budde

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Citations

Apr 22, 2008·Journal of Chromatography. a·Miriam Pateiro-MoureJesús Simal-Gándara
Apr 30, 2003·Rapid Communications in Mass Spectrometry : RCM·Lee GoodwinBrendan J Keely
Mar 8, 2006·Journal of Animal Physiology and Animal Nutrition·S ChakeredzaU ter Meulen
Jul 5, 2007·Rapid Communications in Mass Spectrometry : RCM·James R WickensBrendan J Keely
Jun 7, 2006·Mass Spectrometry Reviews·Lutz AlderBärbel Vieth
Sep 25, 2002·Rapid Communications in Mass Spectrometry : RCM·C S EvansB J Keely
Aug 28, 2001·Journal of Mass Spectrometry : JMS

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