期刊
TALANTA
卷 85, 期 3, 页码 1598-1602出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2011.06.050
关键词
Temperature-controlled ionic liquid dispersive liquid-phase microextraction; Bisphenol A; 4-N-nonylphenol; 4-Tert-octylphenol; 1-Octyl-3-methylimidazolium hexafluorophosphate; High performance liquid chromatography-fluorescence detector
资金
- National Natural Science Foundation of China [20877022]
- Program for New Century Excellent Talents in University [NCET-10-0813]
Present study described a simple, sensitive, and viable method for the determination of bisphenol A, 4-n-nonylphenol and 4-tert-octylphenol in water samples using temperature-controlled ionic liquid dispersive liquid-phase microextraction coupled to high performance liquid chromatography-fluorescence detector. In this experiment, 1-octyl-3-methylimidazolium hexafluorophosphate ([C8MIM][PF6]) was used as the extraction solvent, and bisphenol A. 4-n-nonylphenol and 4-tert-octylphenol were selected as the model analytes. Parameters affecting the extraction efficiency such as the volume of [C8MIM][PF6], dissolving temperature, extraction time, sample pH, centrifuging time and salting-out effect have been investigated in detail. Under the optimized conditions, good linear relationship was found in the concentration range of 1.0-100 mu g L-1 for BPA, 1.5-150 mu g L-1 for 4-NP, and 3-300 mu g L-1 for 4-OP, respectively. Limits of detection (LOD, S/N = 3) were in the range of 0.23-0.48 mu g L-1. lntra day and inter day precisions (RSDs, n=6) were in the range of 4.6-5.5% and 8.5-13.3%, respectively. This method has been also successfully applied to analyze the real water samples at two different spiked concentrations and excellent results were obtained. (C) 2011 Elsevier B.V. All rights reserved.
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