Simultaneous Determination of Organochlorine and Pyrethroid Pesticide Residues in Hotpot Condiment by Gas Chromatography

A simultaneous detection method has been developed for 21 organochlorine and 6 pyrethroid pesticides in hotpot condiment. Pesticide residues were extracted with acetonitrile, purified by gel permeation chromatography, Florisil solid phase extraction column and primary secondary amine, and determined by gas chromatography with micro-electron capture detector Limits of detection were varied in the range of 0. 082 - 2. 3 g/kg for organochlorine pesticides and 1. 5 - 13. 0 g/kg for pyrethroid pesticides, and the spiked recoveries were ranged from 70. 1% to 116. 0% with relative standard deviations around 0. 2% - 6. 1%. This method is rapid, sensitive and reliable, and can be used to simultaneously detect multi-residues of pesticides in hotpot condiment.