Preparation of dummy template imprinted polymers at surface of silica microparticles for the selective extraction of trace bisphenol A from water samples.
Preparation of dummy template imprinted polymers at surface of silica microparticles for the selective extraction of trace bisphenol A from water samples.
复制标题
DOI：
10.1016/j.jhazmat.2010.02.083
复制
发表时间：
2010-07
影响因子：
13.6
通讯作者：
Wenhui Zhao;Na Sheng;Rong Zhu;Fangdi Wei;Zheng Cai;M. Zhai;Shuhu Du;Qin Hu
中科院分区：
文献类型：
--
作者：
Wenhui Zhao;Na Sheng;Rong Zhu;Fangdi Wei;Zheng Cai;M. Zhai;Shuhu Du;Qin Hu
采用表面分子印迹技术制备了双酚A（BPA）分子印迹聚合物。采用双酚A的类似物4，4 ′-二羟基联苯和3，3 ′，5，5 ′-四溴双酚A代替双酚A作为模拟模板，避免了痕量目标分析物（BPA）的泄漏。结果表明，所制备的模拟分子印迹聚合物对双酚A具有较大的吸附容量、较高的识别能力和较快的结合动力学。DMIPs的最大吸附量可达958μmolg−1，且仅需40 min即可达到吸附平衡。将DMIPs应用于固相萃取-HPLC/UV联用测定水样中的BPA。在0.0760-0.912ngmL− 1的浓度范围内，分析方法的校准曲线呈线性，相关系数大于0.999。检测限为15.2pgmL−1（S/N=3）。回收率在92.9-102%之间，相对标准偏差（RSD）小于11%。用所建立的方法测定了自来水、饮用水、雨水和一次性餐具渗沥液中的痕量双酚A，结果令人满意。
Molecularly imprinted polymers for bisphenol A (BPA) were prepared by using surface molecular imprinting technique. Analogues of BPA, namely 4,4′-dihydroxybiphenyl and 3,3′,5,5′-tetrabromobisphenol A, were used as the dummy templates instead of BPA, to avoid the leakage of a trace amount of the target analyte (BPA). The resulting dummy molecularly imprinted polymers (DMIPs) showed the large sorption capacity, high recognition ability and fast binding kinetics for BPA. The maximal sorption capacity was up to 958μmolg−1, and it only took 40min for DMIPs to achieve the sorption equilibrium. The DMIPs were successfully applied to the solid-phase extraction coupled with HPLC/UV for the determination of BPA in water samples. The calibration graph of the analytical method was linear with a correlation coefficient more than 0.999 in the concentration range of 0.0760–0.912ngmL−1of BPA. The limit of detection was 15.2pgmL−1(S/N=3). Recoveries were in the range of 92.9–102% with relative standard deviation (RSD) less than 11%. The trace amounts of BPA in tap water, drinking water, rain and leachate of one-off tableware were determined by the method built, and the satisfactory results were obtained.