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Separation and Sensitive Analysis of Chlorophenols by MEEKC |
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| Authors: | Qingxiang Zhou Jinli Mao Guohong Xie Junping Xiao |
| Institution: | 1. School of Chemistry and Environmental Sciences, Henan Normal University, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Xinxiang, 453007, People’s Republic of China 2. Heraeus Materials Technology Shanghai Ltd, Minhang District, Shanghai, 201108, People’s Republic of China 3. College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang, 453003, People’s Republic of China 4. Department of Chemistry, University of Science and Technology Beijing, Beijing, 100083, People’s Republic of China |
| Abstract: | A new microemulsion electrokinetic chromatographic method has been established for separation and sensitive analysis of the three chlorophenols 2-chlorophenol, 4-chlorophenol, and 2,4-dichlorophenol. The optimum microemulsion system was 15 mM SDS, 112 mM n-butanol, and 10 mM n-octane in 20 mM sodium tetraborate (pH 9.0). Under the optimum conditions, baseline separation was achieved within 8 min. The method was used for analysis of a real water sample previously pretreated by SPE. The linear ranges, precision of migration time and peak area, and limits of detection (LOD) were in the ranges of 0.5–50 μg L?1, 4.85–9.75%, 0.49–0.706% (n = 6), and 0.6–1 μg L?1, respectively, for the three chlorophenols. |
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