中文摘要： 本文开发了一个气体辅助分散液相微萃取法，用于检测蔬菜和果汁中的农药残留，该方法以深共晶溶剂作为萃取溶剂并与气相色谱-火焰离子化检测法联用进行检测。在最佳提取条件下，富集因子和检测回收率范围分别为247-355和49-71 %，检测限和定量限范围分别为0.24-1.4μg/L和0.71-4.2μg/L。该方法具有简单、快速、高效、廉价等优点。
外文摘要：In this study, a gas-assisted dispersive liquid-phase microextraction method using a deep eutectic solvent as the extraction solvent combined with gas chromatography and flame ionization detection was developed for the extraction and determination of some pesticide residues in vegetable and fruit juice samples. In this method, choline chloride and 4-chlorophenol at a molar ratio of 1: 2 were mixed. By heating and vortexing, a clear, water-immiscible, and homogeneous liquid was formed. The obtained deep eutectic solvent was added to an aqueous solution ofthe analytes in a conical test tube. Air was bubbled into the aqueous solution and a cloudy solution was obtained. During this step, theanalytes were extracted into the fine droplets of the extraction solvent. After centrifugation, an aliquot of the settled phase wasinjected into the separation system. Under the optimum extraction conditions, enrichment factors, and extraction recoveries were obtained in the ranges of 247-355 and 49-71%, respectively. The obtained values for the limits of detection and quantification were in the ranges of 0.24-1.4 and 0.71-4.2 mu g/L, respectively. The proposed method is simple, fast, efficient, and inexpensive.
 
外文关键词：fruit, gas chromatography, microextraction, pesticides, vegetables
作者：Farajzadeh, Mir Ali; Dabbagh, Masoumeh Sattari; Yadeghari, Adeleh
作者单位：Univ Tabriz, Dept Analyt Chem, Fac Chem, POB 5166614766, Tabriz, Iran.
期刊名称：JOURNAL OF SEPARATION SCIENCE
期刊影响因子：2.557
出版年份：2017
出版刊次：5
点击下载：深共晶溶剂辅助气相分散液相微萃取-气相色谱-火焰离子化检测器测定果蔬样品中的农药残留