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This study established simultaneous determination of the matrix carbendazim, thiabendazole , fuberidazole , thiophanate , thiophanate-methyl and allyl benomyl residual liquid chromatography - mass spectrometry / mass spectrometry (HPLC-MS/MS) methods of analysis On the basis of the research , through experiments on the extraction of the pre-treatment , the purification conditions were optimized , and the results show that : by acetonitrile extraction , purification PSA- C18 - graphitized carbon black powder , best extracted purification . Chromatography under the conditions of this study , carbendazim , thiabendazole , fuberidazole , thiophanate , thiophanate-methyl and allyl benomyl showed a good linear relationship 0.2μg/mL ~ 10μg/mL The correlation coefficient ≥ 0.9990. After the experiments liquid chromatography - mass spectrometry / mass spectrometry (HPLC-MS/MS) method carbendazim, thiabendazole , fuberidazole , thiophanate , thiophanate-methyl and allyl benomyl detection limit 5μg/kg. Add rice , wheat , pork , liver , milk , citrus , apples, potatoes , walnuts , spinach and tea matrix recovery experiments , the added concentration of 5 ~ 25μg/kg recovery of 61.6% to 104.8% , The coefficient of variation of 6.0% to 14.4% . The method of determination of the low limit of 5mg/kg, fully able to meet the current national residue limits requirements . Detection of this method before the process is simple , high sensitivity , accurate quantitative results applicable to the detection of benzimidazole pesticide residues in food . Strong outside the extension (available upon request to increase the detection of pesticide varieties ) , to promote the use of worth in the import and export of food testing .
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