Record Display for the EPA National Library Catalog

RECORD NUMBER: 125 OF 1416

OLS Field Name OLS Field Data
Main Title Applications of Combined Gas Chromatography-Mass Spectrometry to Pesticide Residue Identifications.
Author Biros., Francis J. ;
CORP Author Environmental Protection Agency, Chamblee, Ga. Office of Pesticides Programs.
Year Published 1970
Stock Number PB-275 985
Additional Subjects Pesticides ; Gas chromatography ; Mass spectrometry ; Chemical analysis ; Residues ; Insecticides ; Chlorine organic compounds ; Organic phosphates ; Phenols ; Phosphorus organic compounds ; Reprints
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-275 985 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 19p
Abstract
Several individual and multiresidue analytical methods are available for gas chromatographic-mass spectrometric confirmation and identification of pesticide residues. Specific examples considered in this report include the analysis of intact and derivatized phenolic residues such as pentachlorophenol and 1-naphthyl chloroacetate, organophosphorus insecticide metabolic and hydrolytic products including O,O-diethyl O-methyl phosphorothionate, O,O-diethyl S-methyl phosphorothiolate, and O,O-diethyl O-methyl phosphate, several organochlorine pesticides of the DDT and cyclodiene type, phenoxyalkanoic acid herbicide exposure and methodology studies involving 2,4-D and 2,4,5-T, and polychlorinated biphenyl residues. Conventional residue analytical methodology and gas chromatographic column technology are, in general, directly applicable to the analysis of human, animal, and environmental substrates by the combined technique. Evaluation of mass spectral fragmentation pathways provides definite and conclusive confirmation of residue identity as well as characterization of residues and their metabolites of unknown structure.