||Transport and Fate of Organophosphate Insecticides in a Laboratory Model Ecosystem.
Gile, Jay D. ;
Gillett, James W. ;
||National Heart, Lung, and Blood Inst., Bethesda, MD.
Organic phosphates ;
Isotopic labeling ;
Carbon 14 ;
Transport properties ;
Path of pollutants ;
Methyl parathion ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The disposition of 14C-labeled methylparathion, parathion, and p-nitrophenol applied as a foliar spray was examined in the Terrestrial Microcosm Chamber (TMC) and compared to a reference compound, dieldrin. The impact of soil type (synthetic vs natural) and airflow rates through the camber on methylparathion disposition were evaluated. The TMC contained either a synthetic soil medium or Willamette sandy loam soil plus agricultural crops, numerous invertebrates, and a gravid gray-tailed vole (Microtus canicaudus). Dieldrin was accumulated to a lesser extent than any of the organophosphates in the synthetic soil. Concentrations of methylparathion in the upper layer of Willamette sandy loam soil were consistently lower than those observed with the synthetic medium. Increased airflows altered methylparathion distribution primarily through increased export from the TMC. Although recovery of dieldrin was lower than with equivalent applications of organophosphates, a significantly greater concentration was detected in the vole. Only dieldrin appeared to affect vole survival.
||Pub. in Jnl. of Agricultural and Food Chemistry 29, p616-621 May-Jun 81.
|NTIS Title Notes
||Reprint: Transport and Fate of Organophosphate Insecticides in a Laboratory Model Ecosystem.
|PUB Date Free Form
||5 Jan 81
||PC A02/MF A01