Record Display for the EPA National Library Catalog


Main Title Exposure assessment modeling for aldicarb in Florida
Author Dean, J. D. ; Atwood, D. F.
Other Authors
Author Title of a Work
Atwood, D. F.
CORP Author Anderson-Nichols and Co., Inc., Palo Alto, CA.;Environmental Research Lab., Athens, GA.
Publisher Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1987
Report Number EPA 600/3-85/051; EPA-68-03-3116
Stock Number PB87-188801
OCLC Number 17197082
Subjects Drinking water--Florida--Contamination
Additional Subjects Pesticides ; Florida ; Exposure ; Ground water ; Mathematical models ; Pesticides ; Concentration(Composition) ; Citrus trees ; Soils ; Sulfur organic compounds ; Aldicarb ; Environment pollution ; Environmental fate ; Propanol/methyl-(methylthio)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EMBD  EPA/600/3-85/051 NRMRL/GWERD Library/Ada,OK 03/18/1994
NTIS  PB87-188801 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xvii, 347 p. : ill., maps ; 28 cm.
A modeling study was performed to assess aldicarb concentrations in drinking water wells in the vicinity of citrus groves in Florida. Areas in the citrus growing region were identified, with respect to the unsaturated and saturated zones, in which transport and transformation of aldicarb was thought to be different. In addition an extensive literature search was conducted to determine degradation rates and adsorption coefficients for aldicarb. These regional and chemical data were used to define various simulation scenarios. The fate and migration of aldicarb was then simulated for the unsaturated zone using the Pesticide Root Zone Model and for the unsaturated zone using the Combined Fluid-Energy-Solute Transport model. Results of the unsaturated zone modeling showed that the highest loads leached to ground water were approximately 1 kg/ha, occurring in areas of 'ridge' soils with thin unsaturated zones. Combined results of the unsaturated and saturated zone modeling showed that, in general concentrations in drinking water wells should be low but may exceed 10 ppb for aldicarb under some conditions.
"May 1987." "EPA/600/3-85/051." Bibliography: p. 265-275.