基于悬浮有机液滴凝固的环糊精辅助分散液液微萃取-高效液相色谱法测定谷物中拟除虫菊酯类杀虫剂残留

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-01-24 DOI:10.1556/1326.2021.00991

Haijuan Jiang, Xinyuan Bi, Xin Huang, Xingle Guo, Ziyu Zou, Ying Li, Xu Jing, Junxue Wu

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引用次数: 1

摘要

建立了环糊精辅助分散液-液微萃取-高效液相色谱法测定谷物中拟除虫菊酯的简便、快速、环保制样方法。用乙腈提取，经清洗后用绿色萃取剂薄荷醇浓缩，采用γ-环糊精辅助萃取。萃取剂薄荷醇在环糊精溶液中以微滴形式分散，室温下固化，萃取效率高，收集方便。优化后的方法在0.01 ~ 10 mg kg−1范围内线性良好，检出限为3.5 ~ 9.5 μ kg−1。3种拟除虫菊酯(高效氯氟氰菊酯、溴氰菊酯和联苯菊酯)在水稻、小麦、玉米和小米4种谷物中3个水平的强化回收率为77.6 ~ 101.6%，相对标准偏差为0.6 ~ 6.6%。该方法可用于谷物中拟除虫菊酯类杀虫剂的测定。

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Cyclodextrin-assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplets coupled with HPLC for the determination of pyrethroid residues in cereals

A simple, rapid, and environmentally friendly sample preparation method for pyrethroids determination in cereals using cyclodextrin-assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplets coupled with high-performance liquid chromatography was established. The cereal samples were extracted with acetonitrile, cleaned up, and concentrated by green extractant menthol via γ-cyclodextrin assisted extraction process. The extractant menthol dispersed as fine droplets in the cyclodextrin solution and then solidified at room temperature for efficient extraction and convenient collection. The optimized method provided good linearity in the range of 0.01–10 mg kg−1 with limits of detection of 3.5–9.5 μg kg−1. The fortified recoveries of three pyrethroids (i.e., lambda-cyhalothrin, deltamethrin, and bifenthrin) in four cereals (i.e., rice, wheat, maize, and millet) at three levels were in the range of 77.6–101.6% with relative standard deviations of 0.6–6.6%. Overall, the proposed method can be successfully applied for the determination of pyrethroids in cereals.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.