Human liver microsomes (n = 16) activated parathion (O, O, diethyl O-p-nitrophenyl phosphorothioate, 20 and 200 microM) to paraoxon at a rate of 23.3-199.3 and 18.7-310.3 pmol/min per mg protein, respectively. p-Nitrophenol, was also formed, at 321.1-769.2 and 406.2-778.3 pmol/min per mg protein. This represented a 16-fold and 2-fold range in capacity to activate and detoxify parathion, respect...

Eggplant shoot and fruit borer (ESFB), Leucinodes orbonalis G. is a key pest of eggplant, Solanum melongena L. Organophosphates (OP) having high toxicity and persistence are used to control the pests in many developing countries, despite availability of new insecticides with better qualities. Field evaluation of thiacloprid and indoxacarb were carried out against ESFB, with an OP insecticide, m...

Abstract A method for simultaneous determination of trace four organophosphorus pesticides residues in animal liver samples has been developed and validated. This is based on the preliminary sample preparation using extraction target compound with a mixture toluene-cyclohexane by means up-to-date accelerated solvent (ASE), liquid-liquid partitioning acetonitrile hexane, additional clean up step...

The present study aims at determining the level of contamination jawfish (Chrysichthys nigrodigitatus) by organophosphate residues in hydroelectric dams Faé, Kossou and Taabo. Ninety (90) fish were collected from these three during eight sampling campaigns. Composite samples formed, each for two fish. A total forty-five (45) composite formed. detection pesticide was determined gas chromatograph...

Dilute FeCl3 and Fe(NO3)3 solutions degraded parathion to paraoxon and p-nitrophenol. Initial hydrolysis products of iron appeared to have the greatest catalytic activity which decreased as these hydrolysis products aged. The Fe3+ ion was less catalytically active than its hydrolysis products for parathion degradation. pH was not a factor in parathion degradation in this study. AlCl3 solutions ...