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首页> 外文期刊>The Journal of automatic chemistry >Rapid Screening and Quantitative Analysis of 74 Pesticide Residues in Herb by Retention Index Combined with GC-QQQ-MS/MS
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Rapid Screening and Quantitative Analysis of 74 Pesticide Residues in Herb by Retention Index Combined with GC-QQQ-MS/MS

机译：通过保留指数与GC-QQQ-MS / MS结合HERB中74种农药残留的快速筛选和定量分析

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In this research, a very practical QuEChERS-GC-MS/MS analytical approach for 74 pesticide residues in herb based on retention index was established. This novel analytical approach has two important technical advantages. One advantage is to quickly screen pesticide compounds in herbs without having to use a large number of pesticide standard substances at the beginning of the experiment. The other advantage is to assist in identifying the target pesticide compound accurately. A total of 74 kinds of pesticides were quickly prescreened in all chuanxiong rhizoma samples. The results showed that three kinds of pesticides were screened out in all the samples, including chlorpyrifos, fipronil, and procymidone, and the three pesticides were qualitatively and quantitatively determined. The RSD values for interday and intraday variation were acquired to evaluate the precision of the analytical approach, and the overall interday and intraday variations are not more than 1.97% and 3.82%, respectively. The variations of concentrations of the analyzed three pesticide compounds in sample CX16 are 0.74%–4.15%, indicating that the three pesticides in the sample solutions were stable in 48?h. The spiked recoveries of the three pesticides are 95.22%, 93.03%, and 94.31%, and the RSDs are less than ±?6.0%. The methodological verification results indicated the good reliability and accuracy of the new analytical method. This research work is a new application of retention index, and it will be a valuable tool to assist quickly and accurately in the qualitative and quantitative analysis of multipesticide residues in herbs.
机译：在本研究中，建立了基于保留指数的74个农药残留的非常实际的QCERS-GC-MS / MS分析方法。这种新颖的分析方法具有两个重要的技术优势。一个优点是快速在草药中筛选农药化合物，而无需在实验开始时使用大量农药标准物质。另一个优点是有助于精确地识别靶农药化合物。所有川芎根茎样品都迅速酝酿了74种杀虫剂。结果表明，在所有样品中筛选出三种杀虫剂，包括氯吡啶罗素，氟克里尔和治然酮，并且三种农药是定性和定量测定的。获得间隔和盘区别变异的RSD值，以评估分析方法的精确度，整体间隔和盘区内变化分别不超过1.97％和3.82％。分析的三种农药化合物在样品CX16中的浓度的变化为0.74％-4.15％，表明样品溶液中的三种农药在48℃下稳定。三种农药的尖刺回收率为95.22％，93.03％和94.31％，RSD小于±6.0％。方法论验证结果表明了新分析方法的良好可靠性和准确性。这项研究工作是一种新的保留指标的应用，它将是一种有价值的工具，可以在草药中多灰质残留的定性和定量分析中快速准确地协助。

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