Record Display for the EPA National Library Catalog
RECORD NUMBER: 65 OF 76
|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.|
|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|
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.