预处理对菊中37种农药残留检测的影响

IF 2.3 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Analytical Methods in Chemistry Pub Date : 2021-12-09 eCollection Date: 2021-01-01 DOI:10.1155/2021/8854025

Xiao-Ying Lu, Yan-Qin Ouyang, Wei-Ya Zeng, Cui-Qing Lin, Lu-Hua Xiao, Gui-Hua Luo, Ruo-Ting Zhan, Ping Yan

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引用次数: 8

摘要

建立了菊花中37种农药的气相色谱-质谱联用检测方法，并探讨了基质诱导的增强效应的减弱情况。比较了QuEChERS萃取和基质固相分散(MSPD)对回收率和基质效应(ME)的影响。比较了萃取和基质固相分散(MSPD)对回收率的影响和基质效应(ME)对降低ME的影响。对净化吸附剂、溶剂的体积和种类、处理时间进行了优化。测定方法的准确度(回收率)、精密度(相对标准偏差，RSD)、线性度、定量限、检出限。混合标准液在3个水平上的回收率分别为76% ~ 120%，RSD≤15%;MSPD和QuEChERS提取的回收率分别为76%和120%，RSD≤11%。结果表明，MSPD和QuEChERS提取对21种农药的ME分别为80% ~ 120%和15%。与MSPD相比，QuEChERS提取更简单、更快。将该方法应用于27份籼稻样品的分析;检出率最高的是磷酸盐(63.0%)。

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Effect of Pretreatment on Detection of 37 Pesticide Residues in Chrysanthemum indicum.

This study aimed to develop a method, followed by gas chromatography-mass spectrometry, for detecting 37 pesticides in Chrysanthemum indicum (C. indicum) and investigating the decrease in the matrix-induced enhancement effect. The influence of QuEChERS extraction and matrix solid-phase dispersion (MSPD) on the recovery and matrix effect (ME) was compared. extraction and matrix solid-phase dispersion (MSPD) on the recovery and matrix effect (ME) was compared to decrease the ME. The cleanup sorbents, volume and type of solvent, and treatment time were optimized. The accuracy (as recovery), precision (as relative standard deviation, RSD), linearity, limit of quantitation, and limit of detection were determined. The recoveries at the three levels using mixed standard solution ranged between 76% and 120% with RSD ≤15%, and 76% and 120% with RSD ≤11% for MSPD and QuEChERS extraction, respectively. The results suggested that the ME for 21 pesticides was in the range of 80%-120% after MSPD and 15% after QuEChERS extraction. QuEChERS extraction was simpler and faster than MSPD. This methodology was applied in the analysis of 27 C. indicum samples; phorate was most frequently detected (63.0% of the sample).

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来源期刊

Journal of Analytical Methods in Chemistry CHEMISTRY, ANALYTICAL-ENGINEERING, CIVIL

CiteScore

4.80

自引率

3.80%

发文量

审稿时长

6-12 weeks

期刊介绍： Journal of Analytical Methods in Chemistry publishes papers reporting methods and instrumentation for chemical analysis, and their application to real-world problems. Articles may be either practical or theoretical. Subject areas include (but are by no means limited to): Separation Spectroscopy Mass spectrometry Chromatography Analytical Sample Preparation Electrochemical analysis Hyphenated techniques Data processing As well as original research, Journal of Analytical Methods in Chemistry also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.