Ionic liquid based dispersive liquid-liquid microextraction of aromatic amines in water samples  

作　　者：Yun Chang Fan Zheng Liang Hu Mei Lan Chen Chao Shen Tu Yan Zhu 

机构地区：[1]Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China [2]The Zhejiang University National Science Park, Hangzhou 310013, China [3]Biology and Environment Engineering College of Zhejiang Shuren University, Hangzhou 310015, China

出　　处：《Chinese Chemical Letters》2008年第8期985-987,共3页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.20375035,20527005,20775070);by Zhejiang Provincial Natural Science Foundation of China(Nos.Z404105,Y507252).

摘　　要：In this work, a new microextraction method termed ionic liquid based dispersive liquid-liquid microextraction （IL-DLLME） was demonstrated for the extraction of 2-methylaniline, 4-chloroaniline, 1-naphthylamine and 4-aminobiphenyl in aqueous matrices. After extraction the ionic liquid （IL） phase was injected directly into the high performance liquid chromatography （HPLC） system for determination. Some parameters that might affect the extraction efficiency were optimized. Under the optimum conditions, good linear relationship, sensitivity and reproducibility were obtained. The limits of detection （LOD, S/N = 3） for the four analytes were in the range of 0.45-2.6 μg L^-1. The relative standard deviations （R.S.D., n = 6） were in the range of 6.2-9.8%. This method was applied for the analysis of the real water samples. The recoveries ranged from 93.4 to 106.4%. The main advantages of the method are high speed, high recovery, good repeatability and volatile organic solvent-free.In this work, a new microextraction method termed ionic liquid based dispersive liquid-liquid microextraction （IL-DLLME） was demonstrated for the extraction of 2-methylaniline, 4-chloroaniline, 1-naphthylamine and 4-aminobiphenyl in aqueous matrices. After extraction the ionic liquid （IL） phase was injected directly into the high performance liquid chromatography （HPLC） system for determination. Some parameters that might affect the extraction efficiency were optimized. Under the optimum conditions, good linear relationship, sensitivity and reproducibility were obtained. The limits of detection （LOD, S/N = 3） for the four analytes were in the range of 0.45-2.6 μg L^-1. The relative standard deviations （R.S.D., n = 6） were in the range of 6.2-9.8%. This method was applied for the analysis of the real water samples. The recoveries ranged from 93.4 to 106.4%. The main advantages of the method are high speed, high recovery, good repeatability and volatile organic solvent-free.

关 键 词：Ionic liquid （IL） Dispersive liquid-liquid microextraction （DLLME） High performance liquid chromatography （HPLC） Aromatic amines 

分 类 号：O6-3[理学—化学]