Disappearance of aerially applied fenitrothion in rice crop waters

Article Abstract:

The disappearance if fenitrothion in rice crop waters was analyzed from a rice crop field after the aerial spraying of the systemic contact insecticide. The formation of fenitrothion metabolites in water samples from rice crop fields was caused by the isomerization of the insecticide. Furthermore, the oxidation of fenitrothion in water led to the formation of fenitrooxon while the chemical hydrolysis of the compound produced 3-methyl-4-nitrophenol metabolites.

Agricultural chemicals, not elsewhere classified, Insecticides NEC, Analysis, Agricultural chemicals, Water pollution, Insecticides, Systemic insecticides

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Determination of the cross-reactivities of immunoassays: effect of common cross-reactants for chlorpyrifos-ethyl in water matrices using magnetic particle-based ELISA

Article Abstract:

The utility of the magnetic particle-based enzyme-linked immunosorbent assay (ELISA) for chlorpyrifos-ethyl responses in the presence of common organophosphorous pesticides was investigated. Cross-reactivity values obtained with this method were were lower by 25%-50% as compared to those obtained using conventional techniques. Variations in cross-reactivity values depended on the type of water used.

Research, Measurement, Enzyme-linked immunosorbent assay, Reactivity (Chemistry), Organophosphorus compounds, Organic phosphorus compounds

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Rapid degradation of propanil in rice crop fields

Article Abstract:

The herbacide propanil degrades rapidly in a humic environment. Analyses of data obtained from rice fields, which served as the humic environment, found that propanil's major degradation product, 3,4-dichloroaniline, was in abundance soon after application of the herbicide. The herbicide did not exhibit degradation before it was applied to the rice fields.

United States, Science & research, Herbicides

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