Fragmentations and reactions of the organophosphate insecticide Diazinon and its oxygen analog Diazoxon studied by electrospray ionization ion trap mass spectrometry

The fragmentations and reactions of Diazinon and related compounds have been studied by electrospray ionization ion trap mass spectrometry. Several novel fragmentation and rearrangements have been observed, including an intramolecular thiono-thiolo rearrangement. The stability, in the gas-phase, of...

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Bibliographic Details
Published in:Journal of the American Society for Mass Spectrometry 2005-04, Vol.16 (4), p.515-523
Main Authors: Barr, J.D., Bell, A.J., Bird, M., Mundy, J.L., Murrell, J., Timperley, C.M., Watts, P., Ferrante, F.
Format: Article
Language:English
Subjects:
Chemistry
Diazinon - analogs & derivatives
Diazinon - chemistry
Electrospraying
Environmental Monitoring - methods
Exact sciences and technology
Fragmentation
Insecticides - chemistry
Ionization
Ions
Mass spectrometry
Organic chemistry
Organophosphorus Compounds - chemistry
Reactivity and mechanisms
Scientific imaging
Spectrometry, Mass, Electrospray Ionization - methods
Spectroscopy
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Summary:The fragmentations and reactions of Diazinon and related compounds have been studied by electrospray ionization ion trap mass spectrometry. Several novel fragmentation and rearrangements have been observed, including an intramolecular thiono-thiolo rearrangement. The stability, in the gas-phase, of the protomers of 2-isopropyl-4-methyl-6-pyrimidinol has been demonstrated. The complexity of the gas phase ion processes observed suggest that, at present, caution should be exercised in using this approach for the analysis of environmental and other samples until our understanding of these processes increases considerably.
ISSN:1044-0305
1879-1123
DOI:10.1016/j.jasms.2004.12.013