Hollow-fiber-supported liquid-phase microextraction using an ionic liquid as the extractant for the preconcentration of bisphenol A, 17-β-estradiol, estrone and diethylstilbestrol from water samples with HPLC detection

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• 作者：Yanmin ZouZhen ZhangXiaoling ShaoYao ChenXiangyang WuLiuqing Yang
• 会议时间：2013-12-01
• 关键词：EDCs ; Hollow-fiber-supported liquid-phase microextraction ; HPLC/UV ; Ionic liquid
• 作者单位：Yanmin Zou(School of Pharmacy,Jiangsu University,301 Xuefu Rd.,212013 Zhenjiang,Jiangsu,China)Zhen Zhang,Xiaoling Shao,Yao Chen,Xiangyang Wu(School of the Environment,Jiangsu University,301 Xuefu Rd.,212013 Zhenjiang,Jiangsu,China)Liuqing Yang(School of Chemistry & Chemical Engineering,Jiangsu University,301 Xuefu Rd.,212013 Zhenjiang,Jiangsu,China)
• 母体文献：2013年水资源生态保护与水污染控制研讨会论文集
• 会议名称：2013年水资源生态保护与水污染控制研讨会
• 会议地点：哈尔滨
• 主办单位：中国环境科学学会
• 语种：chi

摘要

A new method for the determination of 4 EDCs (bisphenol A, 17-β-estradiol, estrone and diethylstilbestrol) in water samples has been developed by using polypropylene hollow fiber supported ionic liquid (IL, 1-Octyl-3-methylimidazolium hexafluorophosphate, [C8MIM][PF6]) microextraction (HF-LPME) combined with HPLC/UV, which was applied to investigate the pollutions in surface water at Neijiang River located at Zhenjiang, Jiangsu Province.To achieve the optimum extraction efficiencies, several main parameters were investigated.Under the optimal extraction conditions (sample pH, 2.0; volume of extraction solvent, 2.5 μL; ionic strength, 2.57) the proposed method offered: good linearity range, 0.15~100μg L-1, with the correlation coefficients (r2) of 0.9996, 0.9994, 0.9990 and 0.9984, respectively; low LOD, 0.03, 0.05, 0.10, 0.05 μg L-1 (S/N=3) for bisphenol A, 17-β-estradiol, estrone and diethylstilbestrol, respectively; good reproducibility (relative standard deviation, RSD, 8.41%, 7.61%, 9.00%, 7.22%, respectively, n=5); satisfied recoveries (80.2-107.1%, n=5); high enrichment factor, 5240, 3693, 2425 and 2086 for the four chemicals, respectively.Using the proposed HF-LPME, among 15 sampling sites along Neijiang River, bisphenol A, diethylstilbestrol and 17-β-estradiol were detected in some sites, all which were the near suburban sampling sites.The result indicated that the role of municipal sewage is an important source of EDCs contamination.