ISSN:
0887-6134
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A rapid, sensitive and specific method was developed for the analysis of selected herbicides and their degradation products in surface water samples using gas chromatography/positive chemical ionization/tandem mass spectrometry (GC/PCI/MS/MS). Compounds included atrazine and its degradation products (deethylatrazine and deisopropylatrazine), simazine, alachlor and its degradation products (2-chloro-2′,6′-diethylacetanilide, 2-hydroxy-2′,6′-diethylacetanilide and 2,6-diethylaniline) and metolachlor. Daughter ion spectra for the protonated molecule of these compounds were generated and are described. The coeluting interferences present using GC/electron impact mass spectrometry in the surface water samples were eliminated by using GC/PCI/MS/MS in the neutral loss mode to detect specific daughter ions. The detection limit for most of the compounds was 200 pg, and instrument response was linear over three orders of magnitude.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bms.1200180928
