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《Modern Agrochemicals》 2008-03
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Determination of Chlorfenapyr Residues in Vegatable by Gas Chromatography

CHEN Li-ping1, LIN Xiang-hua1, LI Shun-fang2 (1. Fujian Zhangzhou Agricultural Test and Inspection Center, Fujian Zhangzhou 363000, China; 2. Agricultural Technology Station of Zhangzhou, Fujian Zhangzhou 363000, China)  
On the base of repetitive experiments, the gas chromatography was established on the quantitative determination of chlorfenapyr residual content in vegetable. On the suitability of the analysis method, samples were extracted with acetonirile, followed by liquid-liquid partitioning [V(petroleum ether)∶V(acetone)=6∶4] and clean-up in an aluminum oxide colnmn. Analysis was then done by GC-ECD with a DB-1701 capillary column using N2 gas as the carrier, a column temperature of 260℃, and an extenal standard. Vaporization chamber and detector temperatures were 240℃ and 300℃, respectively. The method was fast and accurate with a linear correlation (r2) of 0.999 9 in the range of 0.01 to 1.00 mg/L, the linearity equation was Y=96 705.2 X–265.9, average append recoveries was ranged from 84.6% to 98.0%, RSD was ranged from 2.0% to 5.3%, LOD was 0.001 ng and LOQ was 0.001 mg/kg.
【Key Words】： vegatable chlorfenapyr residues gas chromatograpy
【Fund】： 漳州市科技计划项目(Z03028)
【CateGory Index】： TS255.7
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【Citations】
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