Evaluation of humic-pesticide interactions on the acute toxicity of selected organophosphate and carbamate insecticides.
作者： William H. Benson , Scott F. Long
DOI: 10.1016/0147-6513(91)90069-2
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摘要: The ability of water resource managers to accurately predict the toxicity agricultural chemicals in aquatic ecosystems is essential for development reliable quality standards. At present, accurate predictions are difficult due paucity data concerning interaction these with organic constituents freshwater chemical matrix. Dissolved humic materials ubiquitous components and can affect availability environment. In present investigation, influence acid (HA) on acute selected organophosphate carbamate insecticides was examined using a bacterial bioluminescence inhibition assay. EC50 values pesticides were determined presence 0, 0.5, 5.0, 50, 100 mg/liter HA. A combination antagonistic synergistic effects observed examined. HA significantly reduced azinophos-methyl, chlorpyrifos, carbofuran, while enhanced methyl parathion carbaryl. These results indicate that humic-pesticide interactions alter chemicals. Moreover, dependent temporal relationships concentration.
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