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Reference type: Journal
Authors: Zhao WH, Sheng N, Zhu R, Wei FD, Cai Z, Zhai MJ, Du SH, Hu Q
Article Title: Preparation of dummy template imprinted polymers at surface of silica microparticles for the selective extraction of trace bisphenol A from water samples.
Publication date: 2010
Journal: Journal of Hazardous Materials
Volume: 179
Issue: (1-3)
Page numbers: 223-229.
DOI: 10.1016/j.jhazmat.2010.02.083
Alternative URL: http://www.sciencedirect.com/science/article/B6TGF-4YHP063-5/2/fa52695f00445d938f147565fd96a1a6

Abstract: 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 958áμmolág-1, and it only took 40ámin 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 0.0760-0.912 ng mL-1 of BPA. The limit of detection was 15.2 pg mL-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
Template and target information: template analogues, dummy templates, 4,4'-dihydroxybiphenyl, 3,3',5,5'-tetrabromobisphenol A, bisphenol A, BPA
Author keywords: BPA, Water sample, molecular imprinted polymers, Solid-phase extraction


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