Determination of dithiocarbamates pesticide residues in edible fungi by gaschromatography-mass spectrometry with solvent absorption
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(Inner Mongolia Comprehensive Center for Disease Control and Prevention, Inner Mongolia Hohhot 010031, China)

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    Abstract:

    Objective To establish a method for determination of dithiocarbamates (DTCs) pesticide residue in edible fungi by gas chromatography-mass spectrometry (GC-MS) with solvent absorption. Methods DTCs pesticide residues in samples were decomposed to carbon disulfide (CS2) by SnCl2-HCl solution under heating condition, the liberated CS2 was absorbed by hexane and then determined by GC-MS. Results Accuracy and precision were assessed by adding CS2 standard solution in edible fungi at three concentration levels (0.025,0.05 and 0.25 mg/kg).The average spiked recoveries were in the range of 94.8%-109%.The relative standard deviation of precision was from 3.7%-5.5%(n=3). The limits of detection were 0.01 mg/kg and the limits of quantitation were 0.02 mg/kg. Conclusion The method is simple, accurate and reliable. It can be applicable to determination of DTCs pesticide residue in edible fungi.

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LI Wei, PU Yunxia, SHAN Meina, CHEN Zhimin, LIU Yu. Determination of dithiocarbamates pesticide residues in edible fungi by gaschromatography-mass spectrometry with solvent absorption[J].中国食品卫生杂志,2020,32(2):145-149.

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  • Received:February 29,2020
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  • Online: May 01,2020
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