FOOD SCIENCE ›› 2013, Vol. 34 ›› Issue (6): 152-155.doi: 10.7506/spkx1002-6630-201306033

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Rapid Determination of 52 Pesticide Residues in Citrus by Gas Chromatography-Tandem Mass Spectrometry Coupled with QuEChER

ZHANG Xue-lian1,ZHANG Yao-hai2,JIAO Bi-ning1,2,3,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China;2. Laboratory of Quality & Safety Risk Assessmentfor Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Chinese Academy of Agricultural Sciences,Chongqing 400712, China;3. National Citrus Engineering Research Center, Chongqing 400712, China
  • Received:2012-03-16 Revised:2013-01-28 Online:2013-03-25 Published:2013-03-01

Abstract: In this study, an analytical method was established for the determination of 52 pesticide residues in citrus fruits using QuEChERS cleanup and gas chromatography-tandem mass spectrometry (GC-MS/MS). The pesticide residues in citrus fruit samples were extracted into acetonitrile and salted out by anhydrous MgSO4 and NaCl. Then, the pesticide residues in the supernatant after clean-up on the sorbents of N-propyl ethylene diamine (PSA) were subjected to GC-MS/MS analysis under multi-reaction monitoring (MRM) mode. The limit of detection (RSN = 3) of the established method were in the range of 0.07–5.7 μg/kg, and the average recovery rates for 52 pesticide residues in a blank sample were 77.3%–117.8% with a relative standard deviation (RSD) less than 13.8%. Therefore, this method is simple, quick, safe, cheap and reproducible so that it is suitable for the detection of multiple pesticide residues in citrus fruit samples.

Key words: citrus, pesticide residue, QuEChERS, gas chromatography-tandem mass spectrometry (GC-MS/MS)

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