2008•Chinese Journal of Spectroscopy LaboratoryRequires access

Determination of Phoxim Residues in Peanut by Vortex-Mixing Extraction and Gas Chromatography

Ding Zong

Abstract

Residues of phoxim were extracted from samples with acetonitrile by rapid mixing on a Vortex mixer,partitioned by hexane,the conditions of gas chromatography were optimized to reduce the thermo-decomposition due to the thermoinstability of phoxim.The detection limit of phoxim is 0.0086mg/kg in the samples of peanut and the ranges of recoveries are in the range of 84.0%? ?05.4% with the RSD of 3.90%—6.67%.The method is easy,fast and sensitive.

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Key concepts: Phoxim, Chromatography, Detection limit, Chemistry, Gas chromatography, Extraction (chemistry), Hexane, Acetonitrile