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The oxidation of parathion to paraoxon in aqueous media by silver oxide (AgO)
F A Gunther1, D E Ott, F E Hearth
1Department of Entomology, University of California Citrus Research Center and Agricultural Experiment Station, Riverside, California.
Conclusions:
The present preliminary report clearly justifies more detailed examinations of this previously unreported oxidative technique. AgO may prove to be a general reagent for oxidizing thiono-organophosphorus pesticides to their phosphates which are often more potent ChE inhibitors than the parent compounds; many other oxidants have been utilized for this purpose with reported conversion efficiencies ranging from a few percent to near quantitative, usually on a macro-scale; most micro methods in the literature are of very low efficiencies. Whether AgO will also oxidize any of the thiolo-organophosphorus compounds to their phosphates is not yet established, except for negative results with Thimet.
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