Journal article
Collision-induced dissociation (CID) processes in some carbamate and phenylurea pesticides studied by ion-trap MS/MS
International Journal of Mass Spectrometry, Vol.167, pp.21-33
Nov/1997
Abstract
A series of carbamate and phenylurea pesticides was studied by ion-trap MS/MS collision-induced dissociation (CID) in the resonant excitation mode. CID mass spectra contained highly abundant daughter ions formed by simple cleavage as well as by rearrangement processes. The formation of rearrangement daughter ions vs. cleavage daughter ions was found to be dependent on the CID voltage and CID time in some of the investigated compounds. The relative intensity of the ions formed by cleavage, i.e. via high-energy pathways, vs. ions formed through rearrangement processes, i.e. via low-energy pathways, increased with increasing collision energy. A similar effect was obtained by increasing the CID time, thus enabling the ions to gain more energy and consequently form more cleavage ions than rearrangement ions. (C) 1997 Elsevier Science B.V.
Details
- Title
- Collision-induced dissociation (CID) processes in some carbamate and phenylurea pesticides studied by ion-trap MS/MS
- Creators
- J Yinon (null)A Vincze (null)
- Resource Type
- Journal article
- Publication Details
- International Journal of Mass Spectrometry, Vol.167, pp.21-33; Nov/1997
- Number of pages
- 13
- Language
- English
- DOI
- https://doi.org/10.1016/S0168-1176(97)00030-X
- Scientific Unit
- The Weizmann Institute of Science
- Record Identifier
- 993263390003596
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