Cloud-point extraction and preconcentration of bisphenol A from water samples  

作　　者：谭志坚 李芬芳 

机构地区：[1]Key Laboratory of Resources Chemistry of Nonferrous Metals of Ministry of Education (Central South University) [2]School of Chemistry and Chemical Engineering,Central South University

出　　处：《Journal of Central South University》2012年第8期2136-2141,共6页中南大学学报（英文版）

基　　金：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

摘　　要：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 recove6es 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.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.

关 键 词：biphenol A cloud-point extraction extraction mechanism high-performance liquid chromatography water samples 

分 类 号：X832[环境科学与工程—环境工程]