论文信息 - Second-Order Model to Predict Microbial Degradation of Organic Compounds in Natural Waters

Second-Order Model to Predict Microbial Degradation of Organic Compounds in Natural Waters

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-dichlorophenoxyacetic 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% 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.

[1] D. Lewis,et al. MICROBIAL DEGRADATION AND ACCUMULATION OF PESTICIDES IN AQUATIC SYSTEMS , 1975 .

[2] J. Duxbury,et al. 2,4-D metabolism: pathway of degradation of chlorocatechols by Arthrobacter sp. , 1969, Journal of agricultural and food chemistry.

[3] P. C. Kearney,et al. MICROBIAL DEGRADATION OF ISOPROPYL-N-3 -CHLOROPHENYLCARBAMATE AND 2-CHLOROETHYL-N-3-CHLOROPHENYLCARBAMATE. , 1965, Applied microbiology.

[4] W. W. Walker,et al. Malathion Degradation by an Arthrobacter Species 1 , 1974 .

[5] N. Wolfe,et al. Rates of degradation of malathion by bacteria isolated from aquatic system , 1975 .

[6] M. F. Kovacs. Thin-Layer Chromatography for Chlorinated Pesticide Residue Analysis , 1963 .

[7] J. J. Menn,et al. Insecticide Determination, Color Reaction of 2,6-Dibromo-N-chloro-p-quinoneimine with Thiophosphate Insecticides on Paper Chromatograms , 1957 .

[8] N. Wolfe,et al. Chemical and Photochemical Transformation of Selected Pesticides in Aquatic Systems , 1976 .

[9] J. Tiedje,et al. Enzymic cleavage of the ether bond of 2,4-dichlorophenoxyacetate. , 1969, Journal of agricultural and food chemistry.

[10] N. Wolfe,et al. Carbaryl, propham and chlorpropham: A comparison of the rates of hydrolysis and photolysis with the rate of biolysis , 1978 .