郝东宇, 席兴军, 初侨, 于聪聪, 王婷, 兰韬, 潘灿平. 快速滤过型净化法结合高效液相色谱-串联质谱同时检测人参中的5种农药残留[J]. 农药学学报, 2019, 21(1): 82-88. DOI: 10.16801/j.issn.1008-7303.2019.0011
    引用本文: 郝东宇, 席兴军, 初侨, 于聪聪, 王婷, 兰韬, 潘灿平. 快速滤过型净化法结合高效液相色谱-串联质谱同时检测人参中的5种农药残留[J]. 农药学学报, 2019, 21(1): 82-88. DOI: 10.16801/j.issn.1008-7303.2019.0011
    HAO Dongyu, XI Xingjun, CHU Qiao, YU Congcong, WANG Ting, LAN Tao, PAN Canping. Simultaneous detection of five pesticide residues in ginseng by multi-plug filtration cleanup method combined with high performance liquid chromatography-tandem mass spectrometry[J]. Chinese Journal of Pesticide Science, 2019, 21(1): 82-88. DOI: 10.16801/j.issn.1008-7303.2019.0011
    Citation: HAO Dongyu, XI Xingjun, CHU Qiao, YU Congcong, WANG Ting, LAN Tao, PAN Canping. Simultaneous detection of five pesticide residues in ginseng by multi-plug filtration cleanup method combined with high performance liquid chromatography-tandem mass spectrometry[J]. Chinese Journal of Pesticide Science, 2019, 21(1): 82-88. DOI: 10.16801/j.issn.1008-7303.2019.0011

    快速滤过型净化法结合高效液相色谱-串联质谱同时检测人参中的5种农药残留

    Simultaneous detection of five pesticide residues in ginseng by multi-plug filtration cleanup method combined with high performance liquid chromatography-tandem mass spectrometry

    • 摘要: 基于人参样品基质特点,采用快速滤过型净化法 (m-PFC) 结合高效液相色谱-串联质谱 (HPLC-MS/MS),建立了人参中嘧菌酯、苯醚甲环唑、吡虫啉、茚虫威和噻嗪酮5种农药残留同时检测的分析方法。该方法具有较低的检出限 (0.03~0.18 μg/kg) 和定量限 (0.11~0.59 μg/kg),其定量限较中国国家标准GB 2763—2016中规定的对人参中苯醚甲环唑和嘧菌酯的最大残留限量 (MRL) (0.5~1 mg/kg) 低3个数量级,5种农药的线性范围在1~500 μg/L之间。在2、10、50、100和300 μg/kg的添加水平下,方法的平均回收率均在76%~115%之间,相对标准偏差 (RSD) 均小于11%,回收率较好且方法稳定。与传统样品前处理方法相比,该方法具有操作简单、省时省力和灵敏度高等优点。将该方法应用于市售6份人参样品中5种农药残留的检测,结果未检出相应的农药残留。该方法为研发建立更快速、准确地检测人参中农药残留的方法提供了思路,也为后续中国国家标准修订人参中农药最大残留限量提供了参考。

       

      Abstract: Based on the characteristics of ginseng samples matrix, a method for simultaneous determination of azoxystrobin, difenoconazole, imidacloprid, indoxacarb and thiazinone residues in ginseng was established by multi-plug filtration cleanup (m-PFC) method combined with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). A low detection limits (LOD, 0.03-0.18 μg/kg) and quantitative limits (LOQ, 0.11-0.59 μg/kg) were obtained. The LOQ is three orders lower than the limit for azoxystrobin (1 mg/kg) and difenoconazole (0.5 mg/kg) in ginseng in GB 2763—2016. The linear range for five pesticides can reach to 1-500 μg/L. The average recovery rate of the method was between 76% and 115%, with RSD less than 11% at the spiking levels of 2, 10, 50, 100 and 300 μg/kg. Compared with the traditional sample pretreatment method, the new method has the advantages of simple operation, time-saving, labor-saving, and high sensitivity. The method was successfully applied to the detection of five pesticides in six ginseng samples. No corresponding pesticide residues were detected. This method provides a direction for rapid and accurate detection of pesticide residues in ginseng. It also provides a reference for revising the maximum residue limits of pesticides in ginseng in the national standard.

       

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