Record Display for the EPA National Library Catalog

RECORD NUMBER: 10 OF 62

OLS Field Name OLS Field Data
Main Title Cometabolism of Low Concentrations of Propachlor, Alachlor, and Cycloate in Sewage and Lake Water.
Author Novick, N. J. ; Alexander, M. ;
CORP Author Cornell Univ. Agricultural Experiment Station, Ithaca, NY. Dept. of Agronomy.;Environmental Research Lab., Gulf Breeze, FL.
Year Published 1985
Report Number EPA-R-809735; EPA/600/J-85/078;
Stock Number PB85-237691
Additional Subjects Sewage ; Lakes ; Microorganisms ; Metabolism ; Biochemistry ; Pesticides ; Concentration(Composition) ; Reaction kinetics ; Chlorine organic compounds ; Sulfur organic compounds ; Substrates ; Concentration(Composition) ; Water pollution ; Isotopic labeling ; Chromatographic analysis ; Reprints ; Propachlor ; Lasso ; Ro-Neet ; Acetanilide/chloro-N-isopropyl ; Acetanilide/chloro-diethyl-N-(methoxymethyl) ; Cyclohexane carbamic acid/ethyl-N-ethylthio ; Eutrophication
Holdings
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Status
NTIS  PB85-237691 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 8p
Abstract
Low concentrations of propachlor (2-chloro-N-isopropylacetanilide) and alachlor (2-chlor-2', 6'-diethyl-N-(methoxymethyl)acetanilide) were not mineralized, cycloate (S-ethyl-N-ethylthiocyclohexanecarbamate) was slowly or not mineralized, and aniline and cyclohexylamine were readily mineralized in sewage and lake water. Propachlor, alachlor, and cycloate were extensively metabolized, but the products were organic. Little conversion of propachlor and alachlor was evident in sterilized sewage or lake water. The cometabolism of propachlor was essentially linear with time in lake water and was well fit by zero-order kinetics in short periods and by first-order kinetics in longer periods in sewage. The data indicated that cometabolism of these pesticides takes place at concentrations of synthetic compounds that commonly occur in natural waters.