Substitution of toxicologically critical solvents in the residue analysis of acetamiprid: Towards green chemistry

ISSN： 0277-2248

Source： Toxicological and Environmental Chemistry, Vol.92, Iss.1, 2010-01, pp. : 13-19

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Abstract

The article presents the reduced use of toxicologically critical solvents for the extraction and clean-up of a neo-nicotinoid pesticide, acetamiprid from vegetables. Acetamiprid was extracted from spiked vegetable samples of cabbage by the use of different techniques like microwave-assisted extraction (MWAE), sonication and by the conventional method of homogenization. The study revealed that though higher percent recoveries of 78-92 were obtained in the blending method, solvent use was high as compared to MWAE. In MWAE, the percent recoveries recorded were in the range of 46-89 depending upon the solvent used and power employed. A mixture of methanol-water and methanol-acetone at 400 W power levels gave percent recoveries of 72 and 82, respectively, as compared to solvent mixtures, namely, acetone-hexane and acetone-hexane-water, which recorded recoveries of 49 and 67%. The study indicates that the choice of solvent and power employed plays a significant role in MWAE for enhanced recoveries.