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Screening of multiclass pesticide residues in maca andMoringa oleiferaby a modified QuEChERS sample preparation procedure and UPLC-ESI-MS/MS analysis

机译:Maca和Macoringa Oleiferaby在Maca和Moleiferaby中的多烷类农药残留筛选改性Quechers样品制备程序和UPLC-ESI-MS / MS分析

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摘要

In the present study, a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) method was proposed for the simultaneous analysis of 75 pesticides in maca andMoringa oleiferawith ultra-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (UPLC-ESI-MS/MS). The developed method was validated in accordance with linearity, linear range, limit of detection, limit of quantification, accuracy, precision, and matrix effect. Each analyte had good linearity (R-2> 0.99) in the corresponding concentration range. The method LOD and LOQ values of all the analytes ranged from 0.01 mu g kg(-1)to 303.35 mu g kg(-1)and 0.03 mu g kg(-1)to 1011.15 mu g kg(-1), respectively. The recoveries (n= 6) of the analyzed pesticides were in the range of 75.92-113.43%. The RSDs of precision were between 0.60% and 7.36%. All matrix effect values ranged from 81.79% to 118.71% and 80.36% to 119.64% in maca andMoringa oleifera, respectively. The analysis of 103 samples showed the presence of isofenphos-methyl in some of them. The method had a good application prospect and could be used as a general approach for the quantitative determination of pesticide residues in food.
机译:在本研究中,提出了一种改进的QueChers(快速,容易,廉价,有效,坚固耐用,安全的)方法,用于同时分析Maca和Macoringa Oleiferawith超级性能液相色谱 - 电喷雾电离 - 串联质谱(UPLC -esi-ms / ms)。根据线性,线性范围,检测限,定量限制,准确,精度和矩阵效应,验证开发方法。每个分析物在相应的浓度范围内具有良好的线性度(R-2> 0.99)。所有分析物的方法LOD和LOQ值的范围为0.01μgkg(-1)至303.35μgkg(-1)和0.03μgkg(-1)至1011.15μgkg(-1)。分析的农药的回收率(n = 6)在75.92-113.43%的范围内。精度的RSD在0.60%和7.36%之间。所有基质效应值分别为81.79%至118.71%和80.36%,分别在Maca和Macoringa Oleifera的80.36%至119.64%。对103个样品的分析显示出在其中一些中的异氟苯甲酸甲基。该方法具有良好的应用前景,可用作量化食物中农药残留量的一般方法。

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  • 来源
    《RSC Advances》 |2020年第60期|共14页
  • 作者单位

    Kunming Univ Sci &

    Technol Res Ctr Anal &

    Measurement Kunming 650093 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol Res Ctr Anal &

    Measurement Kunming 650093 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol Res Ctr Anal &

    Measurement Kunming 650093 Yunnan Peoples R China;

    Yunnan Police Coll Fac Narcot Control Kunming 650223 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol Fac Life Sci &

    Technol Kunming 650500 Yunnan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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