期刊
CHINESE CHEMICAL LETTERS
卷 19, 期 8, 页码 985-987出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2008.05.024
关键词
Ionic liquid (IL); Dispersive liquid-liquid microextraction (DLLME); High performance liquid chromatography (HPLC); Aromatic amines
资金
- National Natural Science Foundation of China [20375035, 20527005, 20775070]
- Zhejiang Provincial Natural Science Foundation of China [Z404105, Y507252]
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 mu g 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. (C) 2008 Yan Zhu. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
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