The separation on microchip provides the advantages including high efficiency, increased throughput, reduced quantities of hazardous materials, cost saving, relatively facile instrumentation, improved portability, etc. A technique of micellar electrokinetic chromatography (MEKC) coupled with amperometric detection has been actualized on a polydimethylsiloxane microchip for the rapid separation and determination of three phenolic xenoestrogens as octylphenol (OP), 4-nonylphenol (4-NP), and bisphenol A (BPA). The baseline separation of these phenolic xenoestrogens is successfully obtained within 55 s under the optimized MEKC conditions with borate running buffer of pH 8.0 containing sodium dodecyl sulfate and β-cyclodextrin. The linear range for OP, 4-NP, and BPA are 20–1,000, 15–1,000, and 20–1,000 μg/L with the detection limit of 5.0, 4.0, and 3.0 μg/L, respectively. The present method is successfully applied for the determination of these phenolic xenoestrogens in some industrial wastewater samples from mainland of China with the recoveries ranged from 90.2 to 109.4 %.
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This work is supported by the National Natural Science Foundation of China (no. 20675055, 21175096), Priority Academic Program Development of Jiangsu Higher Education Institutions, Ph.D. Programs Foundation of Ministry of Education of China (20093201110004), Natural Science Foundation of Jiangsu Province (BK2009111), and Project of Science and Technology of Suzhou (SYJG0901).
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Yang, H., Zhang, Q., Zhao, J. et al. Separation and Determination of Three Phenolic Xenoestrogens in Industrial Wastewater by Micellar Electrokinetic Chromatography on Polydimethylsiloxane Microchip. Water Air Soil Pollut 223, 3461–3469 (2012). https://doi.org/10.1007/s11270-012-1124-6
- Polydimethylsiloxane microchip
- Micellar electrokinetic chromatography
- Amperometric detection
- Phenolic environmental estrogen
- Industrial wastewater