Separation and Sensitive Analysis of Chlorophenols by MEEKC
2010
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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