Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Abiotic Processes in the Degradation of Pesticides in Natural Waters.
Author Draper, W. M. ; Wolfe, N. L. ;
CORP Author Environmental Research Lab., Athens, GA. ;California Public Health Foundation, Berkeley.
Year Published 1986
Report Number EPA/600/D-86/250;
Stock Number PB87-145330
Additional Subjects Pesticides ; Degradation ; Water pollution ; Contaminants ; Concentration(Composition) ;
Library Call Number Additional Info Location Last
NTIS  PB87-145330 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 12p
Pesticides and other trace micropollutants released to the aquatic environment are subject to hydrolysis, oxidation-reduction, and photodecomposition. Kinetic treatments of hydrolysis and direct photolysis processes have been successful in allowing accurate extrapolation of laboratory studies to field conditions. The most recent hydrolysis models account for not only specific acid-base catalysis, but also the impact of suspended sediments. Nonbiological oxidations and reductions, although demonstrated in numerous recent studies, are not well enough understood at this time to be described by mathematical models based on chemical kinetics. Indirect photolysis processes involve a variety of excited state and/or reactive chemical species. Recent research in this area has been directed at measurement or estimation of steady-state reactant concentrations in natural waters. Further basic research into aquatic chemistry and photochemistry will provide the basis for accurate modeling of other abiotic pesticide degradation processes.