Tandem mass spectrometric analysis of quaternary ammonium pesticides

被引:37
作者
Evans, CS
Startin, JR
Goodall, DM
Keely, BJ [1 ]
机构
[1] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England
[2] MAFF, Cent Sci Lab, York YO41 1LZ, N Yorkshire, England
关键词
D O I
10.1002/rcm.287
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A detailed MSn 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. Copyright (C) 2001 John Wiley & Sons, Ltd.
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收藏
页码:699 / 707
页数:9
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