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首页> 美国卫生研究院文献>Molecules >An Eco-Friendly Hydrophobic Deep Eutectic Solvent-Based Dispersive Liquid–Liquid Microextraction for the Determination of Neonicotinoid Insecticide Residues in Water Soil and Egg Yolk Samples
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An Eco-Friendly Hydrophobic Deep Eutectic Solvent-Based Dispersive Liquid–Liquid Microextraction for the Determination of Neonicotinoid Insecticide Residues in Water Soil and Egg Yolk Samples

机译：一种基于疏水性深共溶溶剂的疏水性分散液微萃取技术用于测定水土壤和蛋黄样品中的新烟碱类杀虫剂残留

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摘要

A green, simple and sensitive hydrophobic DES-based dispersive liquid–liquid microextraction coupled with high-performance liquid chromatography (HPLC) was developed for the analysis of neonicotinoid insecticide residues in various samples. A hydrophobic deep eutectic solvent (DES) was synthesized using decanoic acid as a hydrogen bond donor and tetrabutylammonium bromide (TBABr) as a hydrogen bond-acceptor. DESs were synthesized and characterized by Fourier transform-infrared (FTIR) spectroscopy. Two disperser solvents were substituted with surfactants and acetonitrile, which could afford more effective emulsification and make the extraction relatively greener. The hydrophobic DES extraction phase occurred 10 min after centrifugation, being easy to be collected for analysis. Several parameters were investigated and optimized. Under the optimum condition, the calibration curve of this method was linear in the range of 0.003–1.0-µg·mL , with a correlation coefficient (R ) higher than 0.99 and a good repeatability, with the relative standard deviations (RSDs) were less than 5.00%. The limits of detection were in the range of 0.001–0.003 µg·mL ; the limits of quantitation were in the range of 0.003–0.009 µg·mL·mL . Finally, the presented method was implemented to determine the neonicotinoid insecticide residues in water, soil, egg yolk samples and acceptable recoveries were obtained.
机译：开发了一种绿色，简单且灵敏的基于DES的疏水性分散液-液微萃取结合高效液相色谱（HPLC），用于分析各种样品中的新烟碱类农药残留。使用癸酸作为氢键供体，四丁基溴化铵（TBABr）作为氢键受体，合成了疏水性深共熔溶剂（DES）。合成了DES，并通过傅立叶红外光谱（FTIR）进行了表征。用表面活性剂和乙腈代替两种分散剂溶剂，可以提供更有效的乳化作用，并使萃取相对绿色。疏水性DES提取阶段在离心10分钟后发生，易于收集以进行分析。研究和优化了几个参数。在最佳条件下，该方法的校正曲线在0.003–1.0-µg·mL范围内呈线性，相关系数（R）大于0.99，重复性好，相对标准偏差（RSD）较小高于5.00％。检出限在0.001-0.003 µg·mL范围内;定量限为0.003-0.009 µg·mL·mL。最后，该方法用于测定水，土壤，蛋黄样品中的新烟碱类杀虫剂残留量，并获得了可接受的回收率。

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