||Fate of Selected Fungicides in a Terrestrial Laboratory Ecosystem.
Gile, Jay D. ;
Gillett, James W. ;
||National Heart, Lung, and Blood Inst., Bethesda, MD.
Isotopic labeling ;
Chlorine organic compounds ;
Path of pollutants ;
PNCB fungicide ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The disposition of (14)C-labeled pentachloronitrobenzene (PCNB), two of its analogues pentachlorophenol (PCP) and hexachlorobenzene (HCB), and captan was examined as seed-protectant coatings in a terrestrial microcosm chamber (TMC) in comparison to a reference compound, dieldrin (HEOD). The TMC contained a synthetic soil medium, agricultural crops, numerous invertebrates, and a gravid gray-tailed vole (Microtus canicaudus). Captan and PCP degraded more rapidly in soil and plants than did PCNB, which was degraded somewhat more quickly than HCB and HEOD. By 45 days post-planting, total soil residues (parent + metabolites + bound residues) had declined from a nominal 3 ppm to about 1 ppm for all chemicals but captan (0.26 ppm), while parent residues become undetectable for PCP and captan. Residues in invertebrates and the vole were low for all chemicals, but HCB and HEOD showed ecological magnification indices (EMs) in the vole of 17.7 and 2.1 respectively, as compared to 1.2 for PCNB. None of the chemicals adversely affected vole survival, although the PCNB-exposed vole had no surviving pups. Only HEOD greatly decreased cricket survival.
||Pub. in Agricultural and Food Chemistry, p1159-1164 Nov-Dec 79.
|NTIS Title Notes
||Reprint: Fate of Selected Fungicides in a Terrestrial Laboratory Ecosystem.
|PUB Date Free Form
||6F; 68E; 57H
||PC A02/MF A01