ELECTROCHEMICAL REDUCTION BEHAVIOR AND ANALYSIS OF SOME ORGANOPHOSPHOROUS PESTICIDES

The electrochemical reduction behavior of organophosphorous pesticides such as monocrotophos, phosphamidon, and dichlorvos have been studied bv employing dc polarography, cyclic voltammetry, ac polarography, di fferential pulse polarography, millicoulometry, and controlled potenti al electrolysis. The general reduction mechanism of these compounds ha s been suggested based on the results obtained. A differential pulse p olarographic method is developed for the determination of title compou nds in agricultural formulations. Both standard addition and calibrati on methods are used for the analysis experiments. The lower detection limits are found to be 1.0 x 10(-8), 1.25 x 10(-8) and 1.2 x 10(-8) re spectively.