Analytical and Toxicological Studies of Decomposition of Insecticide Parathion after Gamma-Irradiation and Ozonation

Author:

Bojanowska-Czajka Anna1,Torun Murat2,Kciuk Gabriel1,Wachowicz Mariusz3,Ozbay Dilek Solpan2,Guven Olgun2,Bobrowski Krzysztof1,Trojanowicz Marek13

Affiliation:

1. Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195, Warsaw, Poland

2. Hacettepe University, Department of Chemistry, 06800, Beytepe/Ankara, Turkey

3. University of Warsaw, Department of Chemistry, Pasteura 1,02-093, Warsaw, Poland

Abstract

Abstract The decomposition of the widely used organophosphorus pesticide parathion was carried out in aqueous solutions by the use of γ-irradiation from a 60Co 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 γ-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.

Publisher

Oxford University Press (OUP)

Subject

Pharmacology,Agronomy and Crop Science,Environmental Chemistry,Food Science,Analytical Chemistry

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