Record Display for the EPA National Library Catalog

RECORD NUMBER: 521 OF 1150

OLS Field Name OLS Field Data
Main Title Method for Determination of Low Levels of Exposure to 2,4-D and 2,4,5-T.
Author Shafik, M. T. ; Sullivan, Hazel C. ; Enos., H. F. ;
CORP Author Environmental Protection Agency, Perrine, Fla. Perrine Primate Lab.
Year Published 1971
Stock Number PB-276 306
Additional Subjects Pesticides ; Chemical analysis ; Trace elements ; Herbicides ; Chlorine organic compounds ; Urine ; Laboratory animals ; Humans ; Rats ; Hydrolysis ; Electron capture ; Gas chromatography ; Reprints ; D2-4 herbicide ; T2-4-5 herbicide ; Acetic acid/dichlorophenoxy ; Acetic acid/trichlorophenoxy ; TCP 2-4-5 herbicide ; DCP 2-4 herbicide ; Phenol/trichloro ; Phenol/dichloro ; Urinalysis ; Electron capture gas chromatography ; Toxic substances
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-276 306 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 11p
Abstract
A method has been developed for the determination of trace quantities of 2,4-dichlorophenoxyacetic acid (2,4-D), 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), 2,4-dichlorophenol (2,4-DCP), and 2,4,5-trichlorophenol (2,4,5-TCP) in human and rat urine. The method involves acid hydrolysis of the phenolic conjugates, extraction of the free phenols and acids, ethylation with diazoethane, silica-gel column chromatography clean-up of the derivatized urine extract, and gas chromatographic determination using the electron-capture detector.