Determination of Chlorothalonil and Pyrethroid Pesticides in Carrot by Capillary Gas Chromatography Coupled with Matrix Solid-phase Dispersion

doi:10.7506/spkx1002-6630-200908050

FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (8): 227-230.doi: 10.7506/spkx1002-6630-200908050

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Determination of Chlorothalonil and Pyrethroid Pesticides in Carrot by Capillary Gas Chromatography Coupled with Matrix Solid-phase Dispersion

DONG Juan1 LUO Xiao-ling2,* TANG Zong-gui2 LU Li-liang2 WANG Qing-ling1 LI Ying-jiao1

(1. College of Food, Shihezi University, Shihezi 832000, China
2. Testing Center, Xinjiang Academy of Land Reclamation Scieces, Shihezi 832000, China)

Received:2008-06-11 Revised:2008-12-06 Online:2009-04-15 Published:2010-12-29
Contact: LUO Xiao-ling2,* E-mail:lxl62_622@126.com

Abstract

Abstract:

A capillary gas chromatography (CGC) was developed for the determination of chlorothalonil and five pyrethroids in carrot. The sample was extracted and purified by matrix solid-phase dispersion (MSPD) with ethyl acetate as the eluent, separated by DB-5 capillary vessel column, analyzed by GC- μECD, and quantified by external standard method. The results showed that the recovery of spiked sample is 80.5% to 107.6% with a relative standard deviation less than 7%, and the detection limit is 0.003 to 0.006 mg/kg. The method is simple, raid, sensitive, accurate and suitable for the detection of chlorothalonil and pyrethroid pesticides in vegetables.

Key words: carrot, chlorothalonil, pyrethroid pesticides, matrix solid-phase dispersion (MSPD), capillary gas chromatography (CGC)

CLC Number:

TS207.53

DONG Juan1 LUO Xiao-ling2,* TANG Zong-gui2 LU Li-liang2 WANG Qing-ling1 LI Ying-jiao1. Determination of Chlorothalonil and Pyrethroid Pesticides in Carrot by Capillary Gas Chromatography Coupled with Matrix Solid-phase Dispersion[J]. FOOD SCIENCE, 2009, 30(8): 227-230.

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Determination of Chlorothalonil and Pyrethroid Pesticides in Carrot by Capillary Gas Chromatography Coupled with Matrix Solid-phase Dispersion

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