Determination of 51 Pesticide Residues in Cereals Using Accelerated Solvent Extraction and Gas Chromatography-Triple Quadrupole-Tandem Mass Spectrometry

doi:10.7506/spkx1002-6630-201622033

Abstract

Abstract: A method was developed for detecting 51 pesticide residues in import and export cereals by gas chromatography-triple quadrupole-tandem mass spectrometry (GC-MS/MS). The optimal conditions for accelerated solvent extraction were established by investigating the effect of extraction temperature and solvent on extraction efficiency. The purification efficiencies of three different methods were compared for pesticide residues extracted from sorghum and barley. Multi-pesticide residues in sorghum were detected by GC-MS/MS, and the suitability of the analytical method for determining other cereals including barley and oat was investigated. The detection of six parallel samples of sorghum, barley and oat at three spiked levels showed that the recoveries for all pesticides were between 62.4% and 119.7%, with relative standard deviations (RSDs) varying from 0.5% to 17.3%, and the limits of detection (LODs) of the method were between 0.03 μg/kg and 2.07 μg/kg. This method can meet the analytical requirements and is suitable for high-throughput determination of multi-pesticide residues in cereals.

Key words: gas chromatography-triple quadrupole-tandem mass spectrometry (GC-MS/MS), accelerated solvent extraction, multi-pesticide residues, cereals

CLC Number:

O657.63

MENG Xianglong, ZHANG Yunqing, FAN Guangyu, XU Wenke, TANG Xiu, YAO Yanlin. Determination of 51 Pesticide Residues in Cereals Using Accelerated Solvent Extraction and Gas Chromatography-Triple Quadrupole-Tandem Mass Spectrometry[J]. FOOD SCIENCE, 2016, 37(22): 216-223.

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