Determination of Cypermethrin, Fenvalerate and Triadimefon Pesticide Residues in Jujube by GC

An efficient method for the extraction, clean-up, and determination of cypermethrin, fenvalerate and triadimefon residues in Jujube was used. The pesticide residues were extracted by single solvent and the pesticides determination was performed by electron capture gas chromatography with a DB-1 capillary column. Purification of the pesticides was performed by a column packed with florisil. The recoveries of this method ranged from 78.5% to 98.5%, and detection limit was 0.005 mg/kg to 0.015mg/kg. This research laid a sound foundation for establishment of standard methods for detection of pesticide residual in Jujube.