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首页> 外文期刊>Chromatographia >Application of DLLME Based on the Solidification of Floating Organic Droplets for the Determination of Dinitrobenzenes in Aqueous Samples
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Application of DLLME Based on the Solidification of Floating Organic Droplets for the Determination of Dinitrobenzenes in Aqueous Samples

机译：漂浮有机液滴固化DLLME技术在水样中二硝基苯测定中的应用

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摘要

Dispersive liquid–liquid microextraction (DLLME) based on the solidification of floating organic droplets (DLLME-SFO) combined with gas chromatography-electron-capture detection (GC–ECD) has been developed for extraction and analysis of three dinitrobenzenes. The extraction conditions including extraction solvent, disperser solvent, extraction time, salt effect and temperature were investigated and optimized systematically. The limits of detection were 0.019 μg L−1 for 1,4-dinitrobenzene, 0.079 μg L−1 for 1,3-dinitrobenzene and 0.034 μg L−1 for 1,2-dinitrobenzene. Moreover, it offered good repeatability and high recovery. This method was successfully applied to monitor DNBs in different water samples.
机译：基于漂浮有机液滴固化的分散液-液微萃取（DLLME-SFO）与气相色谱-电子捕获检测（GC-ECD）的结合已经开发用于三种二硝基苯的提取和分析。系统地研究了提取条件，包括提取溶剂，分散剂，提取时间，盐效应和温度等。 1,4-二硝基苯的检出限为0.019μgL -1 ，1,3-二硝基苯的检出限为0.079μgL -1 和0.034μgL - 1 代表1,2-二硝基苯而且，它具有良好的重复性和高回收率。该方法已成功应用于监测不同水样中的DNB。

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