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[Objective] To establish a method for the determination of 8 kinds of organochlorine pesticide residues in the leaves of Clausena lansium by gas chromatography( GC). [Methods]The samples were macerated in water for overnight,extracted with acetone,dichloromethane and hexane by ultrasonic wave. The extract solvent was purified by concentrated sulphuric acid. The separation was performed on a DB-1701 capillary column through a temperature programme and detected by an electron capture detector. 8 kinds of organochlorine pesticide residues including the four isomers of BHC and the four isomers of DDT were determined in the samples. [Results] The average recoveries were in the range of 91. 23% and 98. 56%,and their RSD values were 1. 34- 3. 66%. [Conclusion]The established method is simple,quick,low in cost and easy-operating,suitable for the determination of organochlorine pesticide residues in the leaves of C. lansium.
[Objective] To establish a method for the determination of 8 kinds of organochlorine pesticide residues in the leaves of Clausena lansium by gas chromatography (GC). [Methods] The samples were macerated in water for overnight, extracted with acetone, dichloromethane and hexane by ultrasonic wave. The separation solvent was purified by concentrated sulfur acid. The separation was performed on a DB-1701 capillary column through a temperature program and detected by an electron capture detector. 8 kinds of organochlorine pesticide residues including the four isomers of BHC and the [Results] The average recoveries were in the range of 91. 23% and 98. 56%, and their RSD values were 1. 34- 3. 66%. [Conclusion] The established method is simple, quick, low in cost and easy-operating, suitable for the determination of organochlorine pesticide residues in the leaves of C. lansium.