Abstract
A simple and rapid determination of 24 organophosphorus pesticides in agricultural products by using high-purity graphitized carbon black (Supelclean Envi-Carb) cartridge clean-up was developed. Compared to the traditional clean-up method (activated carbon column chromatography or coagulating method), this method saved time and solvent, removed colored materials, and afforded sufficient recovery of 22 organophosphorus pesticides except two polar pesticides, methamidophos and acephate. The detection limit was 0.01-0.1ppm for agricultural products. The recoveries of methamidophos and acephate were 15.8% and 16.7%, while those of the other 22 organophosphorus pesticides were 66.3-88.3%.
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