Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Methyl Parathion Persistence in Soil Following Simulated Spillage.
Author Butler, L. C. ; Staiff, D. C. ; Davis, J. E. ;
CORP Author Health Effects Research Lab., Wenatchee, WA. Wenatchee Pesticides Research Branch.
Year Published 1980
Report Number EPA-600/J-81-337;
Stock Number PB82-127549
Additional Subjects Soil analysis ; Pesticides ; Residues ; Encapsulation ; Insecticides ; Leaking ; Concentration(Composition) ; Phosphorus organic compounds ; Sampling ; Reprints ; Methyl parathion ; Chemical spills
Library Call Number Additional Info Location Last
NTIS  PB82-127549 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 10p
Simulated spillage of emulsifiable concentrate (E.C) and microencapsulated formulations of methyl parathion on soil were studied. Persistence of residues from both formulations spilled as concentrates and as simulated drum rinses were followed for up to 45 months. Spillage of encapsulated formulation resulted in the formulation of a solid cake-like deposit on the soil surface, which could be a particularly attractive hazard to small children. At 45 months, soil residues had decreased by 64% for emulsifiable concentrate spills, and 68% for the soil beneath the microencapsulated cake. Residue in the cake itself only decreased by 31%. Soil residue levels from simulated drums rinses were essentially innocuous by 45 months for the emusifiable concentrate and by one year for the microencapsulated material. The leaching of methyl parathion from the microencapsulated cake into soil and the relationship between available residue and wet weather were investigated.