Published January 1, 2012
| Version v1
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Analytical and Toxicological Studies of Decomposition of Insecticide Parathion after Gamma-Irradiation and Ozonation
Creators
- 1. Inst Nucl Chem & Technol, PL-03195 Warsaw, Poland
- 2. Hacettepe Univ, Dept Chem, TR-06800 Beytepe, Turkey
- 3. Univ Warsaw, Dept Chem, PL-02093 Warsaw, Poland
Description
The decomposition of the widely used organophosphorus pesticide parathion was carried out in aqueous solutions by the use of gamma-irradiation from a Co-60 source or ozonation by means of an ozone generator, and by combined processes of ozonation and radiolysis. Factors affecting the parathion decomposition as well formation and decomposition of the main by-products, including irradiation dose, length of ozonation time, and presence of common scavengers, were investigated. The most efficient was found to be the gamma-irradiation process combined with a short ozonation period; about 1 kGy irradiation dose was sufficient to decompose the pesticide in 15 mg/L solutions. Chemical studies of the decomposition of parathion were accompanied by monitoring of toxicity changes of irradiated solutions with the Microtox test.
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