Biological Hydrolysis of Parathion in Natural Ecosystems1
- Sudhakar-Barik and
- N. Sethunathan2
Parathion (O, O-diethyl O,p-nitrophenyl phosphorothioate) was applied to flooded soils and to water and sediment river, lake, and pond samples at 15-day intervals. While p-nitrophenol (O, O-dimethyl O,p-nitrophenyl phosphorothioate), the hydrolysis product of parathion, was not detected, even at the end of 12 days after the first addition, it was detected in all samples within 6 hours after two or three additions of the insecticide. Enrichment cultures from the samples of different ecosystems lost their ability to hydrolyze parathion following auto-claving, suggesting microbial participation in parathion hydrolysis.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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