Gas Chromatographic Determination of Fipronil Residue in Tea

doi:10.7506/spkx1002-6630-201010061

FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (10): 279-282.doi: 10.7506/spkx1002-6630-201010061

• Analysis & Detection • Previous Articles Next Articles

Gas Chromatographic Determination of Fipronil Residue in Tea

FU Xiao-fang，LIN Yan-fei，LI Jing，ZHAO Xiao-ya，WANG Peng

Hubei Entry-Exit Inspection and Quarantine Bureau, Wuhan 430050, China

Received:2009-09-07 Revised:2010-01-04 Online:2010-05-15 Published:2010-12-29
Contact: FU Xiao-fang E-mail:fuxf@hbciq.gov.cn

Abstract

Abstract:

An analytical method based on gas chromatography (GC) was proposed for the determination of fipronil residue in tea. Samples were extracted with acetontrile and cleaned up on a Florisil (containing graphitized carbon black) column prior to HPLC analysis with μECD detection. The minimum detectable amount of fipronil was 2 × 10-12 g and the minimum detectable concentration of fipronil in tea was 2μg/kg. Average recoveries of 3 replicates for fipronil in a real sample spiked at 5 levels were within the range of 74.0%－92.0%, with a RSD ranging from 3.26% to 10.55%. The accuracy and sensitivity of the developed method both meet the requirements of pesticide residue analysis.

Key words: fipronil, gas chromatography, tea, solid-phase extraction

CLC Number:

FU Xiao-fang，LIN Yan-fei，LI Jing，ZHAO Xiao-ya，WANG Peng. Gas Chromatographic Determination of Fipronil Residue in Tea[J]. FOOD SCIENCE, 2010, 31(10): 279-282.

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Gas Chromatographic Determination of Fipronil Residue in Tea

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