Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Second-Order Model to Predict Microbial Degradation of Organic Compounds in Natural Waters.
Author Paris, Doris F. ; Steen, William C. ; Baughman, George L. ; Barnett, John T. ;
CORP Author Environmental Protection Agency, Athens, GA. Southeast Environmental Research Lab.
Year Published 1981
Report Number EPA-600/J-80-018;
Stock Number PB81-221095
Additional Subjects Water pollution ; Reaction kinetics ; Degradation ; Mathematical models ; Sites ; Sampling ; Bacteria ; Concentration(Composition) ; Malathion ; Chlorine organic compounds ; Carbamates ; Reprints ; Acetic acid/(butoxy-ethyl-ester)-dichloro-phenoxy ; DBE 2-4 herbicide ; Phosphorodithioates ; Chlorpropharm
Library Call Number Additional Info Location Last
NTIS  PB81-221095 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 9p
The reliability of second-order rate constants for assessing microbial degradation kinetics in natural waters was examined by using three compounds that undergo hydrolytic degradation. The butoxyethyl ester of 2,4-diclorophenoxyacetic acid was studied in water samples from 31 sites, malathion was examined in water from 14 sites, and chlorpropham was studied in samples from 11 sites. The coefficient of variation for rate constants for each compound was less than 65 percent over all sites. Additional studies indicated that the rate conformed to second-order kinetics; that is, the rate was proportional to both bacterial and xenobiotic concentrations.