Determination of Pyrimethanil Residue in Agro-Products by SPE-GC

Abstract

Abstract: Method for the determination of pyrimethanil residue in pakchoi, rice, strawberry, grape, and tomato by means of SPE-GC was developed, respectively. The sample of pyrimethanil in agro-products was extracted with acetonitrile, and cleaned up by liquid-liquid partition with Silica gel SPE. The final purified extract was analyzed by GC/NPD with the external standard method. The recoveries of various amounts of pyrimethanil spiked (0.1～2.5mg/kg) samples of selected agro-products are in the range of 83.44%～108.82%. The detection limit is 0.05mg/L and the RSD(n=5) ranges from of 0.93% to 4.82% .The results showed that the method meets the standard of the residue analysis.

Key words: pyrimethanil, SPE, GC/NP, recovery, RSD

ZHANG Xin-Ming, YU Xiang-Yang, HONG Xiao-Yue, LIU Xian-Jin. Determination of Pyrimethanil Residue in Agro-Products by SPE-GC[J]. FOOD SCIENCE, 2007, 28(11): 424-427.

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Determination of Pyrimethanil Residue in Agro-Products by SPE-GC

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