Record Display for the EPA National Library Catalog


Main Title Biotic and Abiotic Degradation Rates of Methyl Parathion in Freshwater and Estuarine Water and Sediment Samples.
Author Pritchard, P. H. ; Cripe, C. R. ; Walker, W. W. ; Spain, J. C. ; Bourquin, A. W. ;
CORP Author Gulf Coast Research Lab., Ocean Springs, MS. ;Air Force Engineering and Services Center, Tyndall AFB, FL. Directorate of Environmental Planning.;Environmental Research Lab., Gulf Breeze, FL.
Year Published 1987
Report Number EPA-R-809797; EPA/600/J-87/192;
Stock Number PB88-161773
Additional Subjects Water pollution control ; Statistical analysis ; Sediments ; Freshwater ; Estuaries ; Reprints ; Degradation ; Methyl parathion
Library Call Number Additional Info Location Last
NTIS  PB88-161773 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
Statistical analysis of degradation rates of methyl parathion samples from two Gulf Coast estuaries over a three-year period indicated that biodegradation occurred in the presence of sediment but was insignificant in water. Sediment rates always showed the same relative five-fold difference at a primary site within each estuarine area. Samples from 11 ancillary sites indicated biodegradation rates in sediments can be subdivided into two groupings which were independent of seasonal differences (excluding temperature). Spatial variations in rates, therefore, may be of minor environmental significance for the chemical in estuarine areas.