Determination of nine organophosphorus pesticides in cereals and kidney beans by capillary gas chromatography with flame photometric detection.

نویسندگان

  • Bo Tang
  • Jin-E Zhang
  • Li-Guo Zang
  • Yao-Zhong Zhang
  • Xiang-Yang Li
  • Li Zhou
چکیده

A method is developed for the determination of nine organophosphorus pesticide residues in cereals and kidney beans by capillary gas chromatography with flame-photometric detection. In this method, dichloromethane is used for clean-up after liquid-liquid extraction. It is shown that good separations are obtained using a fused-silica capillary column (DB-1701) by the optimized temperature program. In the spiked levels of 0.012-0.43 mg/kg, the recoveries are from 83.7% to 107%, with the relative standard deviation between 3.2% and 13% and limits of detection from 8.2 to 15 microg/kg. The method is rapid, sensitive, and practical.

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عنوان ژورنال:
  • Journal of chromatographic science

دوره 43 7  شماره 

صفحات  -

تاریخ انتشار 2005