Determination of Pesticide Multi-reidues in Vegetables by Means of Simplified Two-dimension GC

Abstract

Abstract: Determination of pesticide residues(β-HCH,p,p’-DDE,acetochlor,trifluralin,chlorpyrifos)in vegetables by means of simplified two-dimension GC was described in this paper.The vegetable samples were ultrasonically extracted with petroleun ether:acetone(9:1),and cleaned up by a Florisil column solid phase extraction(SPE).The calibration curves for the five pesticides are linear in a concentration range of 0.010～0.20mg/L(r=0.9952～0.9991).The recoveries at levels of 0.01～0.05mg/ kg fortified samples range from 81.5%～91.8%,with coefficient of variation of 5.7%～11.2%.The limits of detection are in the range of 0.010～0.055mg/L.

Key words: simplified gas chromatography, vegetable, pesticide, residue

CHEN Shu-Bing, YU Mei-Xiang, YANG Yun-Xia, Dan-Zheng-Jun, Hu-Qiu-Hui. Determination of Pesticide Multi-reidues in Vegetables by Means of Simplified Two-dimension GC[J]. FOOD SCIENCE, 2006, 27(8): 221-223.

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Determination of Pesticide Multi-reidues in Vegetables by Means of Simplified Two-dimension GC

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