Abstract
A novel cloud-point extraction (CPE) was successfully used in preconcentration of biphenol A (BPA) from aqueous solutions. Majority of BPA is extracted into the surfactant-rich phase. The parameters affecting the CPE such as concentration of surfactant and electrolyte, equilibration temperature and time and pH of sample solution were investigated. The samples were analyzed by high-performance liquid chromatography with ultraviolet detection. Under the optimized conditions, preconcentration of 10 mL sample gives a preconcentration factor of 11. The limit of detection (LOD) and limit of quantification (LOQ) are 0.1 μg/L and 0.33 μg/L, respectively. The linear range of the proposed method is 0.2–20 μg/L with correlation coefficients greater than 0.998 7 and the spiking recoveries are 97.96%–100.42%. The interference factor was tested and the extraction mechanism was also investigated. Thus, the developed CPE has proven to be an efficient, green, rapid and inexpensive approach for extraction and preconcentration of BPA from water samples.
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Foundation item: Project(20956001) supported by the National Natural Science Foundation of China; Project(CX2011B083) supported by Hunan Provincial Innovation Foundation for Postgraduate, China; Project(K1104026-11) supported by Project of Changsha Science and Technology Bureau, China
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Tan, Zj., Li, Ff. Cloud-point extraction and preconcentration of bisphenol A from water samples. J. Cent. South Univ. 19, 2136–2141 (2012). https://doi.org/10.1007/s11771-012-1256-2
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DOI: https://doi.org/10.1007/s11771-012-1256-2