Abstract: Gas chromatography was used to analyze the residue of fipronil in pepper and Chinese cabbage. Residues of Fipronil were extracted from pepper and Chinese cabbage with acetonitrile, cleaned up by column chromatography of Al2O3, and determined with GLC equipped by ECD.The average recoveries and coefficient of variations of the method were 81.20%～ 90.58%, 3.94%～9.46% for pepper, and 82.48%～89.35%, 2.77%～9.21% for Chinese cabbage, respectively. The minimum detectable amount of fipronil was 2×10-13g , the minimum detectable concentration of fipronil in the samples of tomato and soil was 25ng/kg. These results showed that the method was in accordaue with demands of residue analysis of pesticide.

Key words: pepper, Chinese cabbage, Fipronil, Residue analysis, GLC