Citation: Yun Chang Fan, Zheng Liang Hu, Mei Lan Chen, Chao Shen Tu, Yan Zhu. Ionic liquid based dispersive liquid-liquid microextraction of aromatic amines in water samples[J]. Chinese Chemical Letters, ;2008, 19(8): 985-987. doi: 10.1016/j.cclet.2008.05.024 shu

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

a Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China;
b The Zhejiang University National Science Park, Hangzhou 310013, China;
c Biology and Environment Engineering College of Zhejiang Shuren University, Hangzhou 310015, China

Received Date: 7 March 2008

Fund Project: 20775070) and by Zhejiang Provincial Natural Science Foundation of China (Nos.Z404105Y507252)This research was financially supported by the National Natural Science Foundation of China (Nos.2037503520527005

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.
- Kinetic determination,
- Spectrophotometry,
- Chemometrics,
- Cephalexin,
- Trimethoprim
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