张圆圆, 刘磊, 李娜, 李辉, 卢娜, 郭永泽, 张玉婷. 农药残留检测中不同蔬菜的基质效应[J]. 农药学学报, 2019, 21(3): 327-337. DOI: 10.16801/j.issn.1008-7303.2019.0040
    引用本文: 张圆圆, 刘磊, 李娜, 李辉, 卢娜, 郭永泽, 张玉婷. 农药残留检测中不同蔬菜的基质效应[J]. 农药学学报, 2019, 21(3): 327-337. DOI: 10.16801/j.issn.1008-7303.2019.0040
    ZHANG Yuanyuan, LIU Lei, LI Na, LI Hui, LU Na, GUO Yongze, ZHANG Yuting. Matrix effects in pesticide residue analysis in various vegetable samples[J]. Chinese Journal of Pesticide Science, 2019, 21(3): 327-337. DOI: 10.16801/j.issn.1008-7303.2019.0040
    Citation: ZHANG Yuanyuan, LIU Lei, LI Na, LI Hui, LU Na, GUO Yongze, ZHANG Yuting. Matrix effects in pesticide residue analysis in various vegetable samples[J]. Chinese Journal of Pesticide Science, 2019, 21(3): 327-337. DOI: 10.16801/j.issn.1008-7303.2019.0040

    农药残留检测中不同蔬菜的基质效应

    Matrix effects in pesticide residue analysis in various vegetable samples

    • 摘要: 基于QuEChERS前处理方法,在气相色谱-串联质谱 (GC-MS/MS) 和超高效液相色谱-串联质谱 (UPLC-MS/MS) 检测条件下,考察了200种农药在17种蔬菜基质中的基质效应,通过基质效应分析找到了合适的代表性基质用作配制检测过程中的基质匹配标准溶液。结果表明:由于基质干扰成分及农药性质的差异,导致不同蔬菜及农药品种之间的基质效应差异。在GC-MS/MS检测中,供试的150种农药中绝大部分表现为基质增强效应,其中葱、姜和大蒜表现为很强的基质效应,萝卜的基质效应较弱;菠菜、芹菜、豇豆和生菜4种蔬菜对其他蔬菜品种能够起到很好的基质校正效果,可作为代表性基质在日常检测中用于其他蔬菜基质的定量分析。在UPLC-MS/MS检测中,供试的105种农药中大部分表现为基质抑制效应,其中姜、大蒜、葱、芹菜、韭菜和菠菜的基质效应较强,西葫芦的基质效应弱;黄瓜、普通白菜、番茄和生菜4种蔬菜能较好地校正其他蔬菜的基质效应,但与GC-MS/MS相比校正能力稍弱。本研究结果认为代表性蔬菜基质可用于降低基质效应对检测结果的干扰。

       

      Abstract: In this paper, the matrix effects on the residue analysis of 200 pesticides under gas chromatography-tandem mass spectrometry (GC-MS/MS) and ultra high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) conditions were investigated. 17 different vegetable matrices based on the QuEChERS preparation were studied. The study is aimed to find the typical vegetables as blank matrices to compensate the matrix effects in pesticide residue analysis. The results showed that differences in matrix interferences and pesticides characteristics lead to varied matrix effects in and between GC-MS/MS and UPLC-MS/MS analysis. In GC-MS/MS analysis, the majority of the 150 pesticides exhibited matrix enhancement effects. The matrix effects of green onion, ginger and garlic were strong. Radish exhibited weak matrix effect. The matrix effects of the majority of vegetables could be well compensated by spinach, celery, cowpea and lettuce, and these four typical vegetables can be used in daily analysis as blank matrices. In the UPLC-MS/MS analysis, most of the 105 pesticides exhibited matrix depression effects. Garlic, ginger, green onion, leek, celery and spinach exhibited strong matrix effects and zucchini exhibited weak matrix effect. The matrix effects of different vegetables could be compensated by the four typical vegetables, including cucumber, Chinese cabbage, tomato and lettuce. However the compensation effects were less effective than that in the GC-MS/MS analysis. The results in this study have provided typical vegetables as blank matrices for reducing the matrix effects to obtain accurate results.

       

    /

    返回文章
    返回