Determination of 4 pesticide residues in bamboo shoots by QuEChERS-high performance liquid chromatography-tandem mass spectrometry
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(1.Zhejiang Institution of Food and Drug Control,Zhejiang Hangzhou 310052,China;2.Zhejiang University of Technology,Zhejiang Hangzhou 310014,China)

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    Abstract:

    Objective A simple and rapid QuEChERS-high performance chromatography-tandem mass spectrometric method was developed for the determination of 4 pesticides, imidacloprid, indoxacarb, phoxim and carbofuran, in bamboo shoots. Methods The residues were extracted from the bamboo shoots with acetonitrile and cleaned up with N-propyl ethylenediamine (PSA), then detected by liquid chromatography-tandem mass spectrometry under multiple reaction monitroring mode (MRM), and quantified by matrix-match calibration curves. Results The recoveries in samples were between 72.4%-92.8% at three spiked levels from 4 to 40 μg/kg, with relative standard deviations of 1.5%-9.2%(n=3). The limits of detection (LOD) of four pesticides were 0.4 μg/kg, while limits of quantification (LOQ) were 1.2 μg/kg. The linear ranges were 0.5-20.0 ng/ml and the correlation coefficients (r2) were above 0.991. Conclusion The method of QuEChERS combined with high performance liquid chromatography-tandem mass spectrometry was accurate, sensitive, simple and convenient for the determination of the 4 pesticide residues, imidacloprid, indoxacarb, phoxim and carbofuran, in bamboo shoots.

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ZHOU Xia, CHEN Wanqin, CHEN Jingyan, ZHU Yaqing, ZHU Bingqi, LUO Jinwen. Determination of 4 pesticide residues in bamboo shoots by QuEChERS-high performance liquid chromatography-tandem mass spectrometry[J].中国食品卫生杂志,2018,30(5):486-490.

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  • Received:May 04,2018
  • Revised:
  • Adopted:
  • Online: September 29,2018
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