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首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Ringer tablet-based ionic liquid phase microextraction: Application in extraction and preconcentration of neonicotinoid insecticides from fruit juice and vegetable samples
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Ringer tablet-based ionic liquid phase microextraction: Application in extraction and preconcentration of neonicotinoid insecticides from fruit juice and vegetable samples

机译：基于林格片剂的离子液相微萃取：在果汁和蔬菜样品中新烟碱类杀虫剂的提取和预浓缩中的应用

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摘要

An efficient, reliable, sensitive, rapid, and green analytical method for the extraction and determination of neonicotinoid insecticides in aqueous samples has been developed using ionic liquid phase micro extraction coupled with high performance liquid chromatography-diode array detector. In this method, a few microliters of 1-hexyl-3-methylimidazolium hexafluorophosphate (as an extractant) is added onto a ringer tablet and it is transferred into a conical test tube containing aqueous phase of the analytes. By manually shaking, the ringer tablet is dissolved and the extractant is released into the aqueous phase as very tiny droplets to provide a cloudy solution. After centrifuging the extracted analytes into ionic liquid are collected at the bottom of a conical test tube. Under the optimum extraction conditions, the method showed low limits of detection and quantification between 0.12 and 0.33 and 0.41 and 1.11 ng mL(-1) respectively. Extraction recoveries and enrichment factors were from 66% to 84% and 655% to 843%, respectively. Finally different aqueous samples were successfully analyzed using the proposed method. (C) 2016 Elsevier B.V. All rights reserved.
机译：使用离子液相微萃取结合高效液相色谱-二极管阵列检测器，开发了一种高效，可靠，灵敏，快速，绿色的分析方法，用于萃取和测定水性样品中的新烟碱类杀虫剂。在这种方法中，将几微升的六氟磷酸1-己基-3-甲基咪唑鎓六氟磷酸酯（作为萃取剂）添加到林格片剂上，并将其转移到包含分析物水相的锥形试管中。通过手动摇动，林格片剂溶解，萃取剂以非常小的液滴形式释放到水相中，从而产生浑浊的溶液。离心分离后的分析物成离子液体，收集在锥形试管的底部。在最佳提取条件下，该方法的检出限和定量限分别在0.12和0.33和0.41和1.11 ng mL（-1）之间。提取回收率和富集因子分别为66％至84％和655％至843％。最后，使用提出的方法成功地分析了不同的水样。 （C）2016 Elsevier B.V.保留所有权利。

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