A novel superparamagnetic surface molecularly imprinted nanoparticle adopting dummy template: An efficient solid-phase extraction adsorbent for bisphenol A

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• 作者：Zhenkun Lin¹ ; Wenjing Cheng¹ ; Yanyan Li ; Zhiren Liu ; Xiangping Chen ; Changjiang Huang ; ^{cjhuang5711@163.com}
• 关键词：Molecularly imprinted polymer ; Superparamagnetic ; Dummy template ; Solid-phase extraction ; Bisphenol A
• 刊名：Analytica Chimica Acta
• 出版年：2012
• 期刊代码：2_00032670
• 类别：ch
• 出版时间：30 March, 2012
• 卷：720
• 期：Complete
• 页码：71-76
• 文件大小：964 K

摘要

Leakage of the residual template molecules is one of the biggest challenges for application of molecularly imprinted polymer (MIP) in solid-phase extraction (SPE). In this study, bisphenol F (BPF) was adopted as a dummy template to prepare MIP of bisphenol A (BPA) with a superparamagnetic core-shell nanoparticle as the supporter, aiming to avoid residual template leakage and to increase the efficiency of SPE. Characterization and test of the obtained products (called mag-DMIP beads) revealed that these novel nanoparticles not only had excellent magnetic property but also displayed high selectivity to the target molecule BPA. As mag-DMIP beads were adopted as the adsorbents of solid-phase extraction for detecting BPA in real water samples, the recoveries of spiked samples ranged from 84.7%to 93.8%with the limit of detection of 2.50 pg mL^鈭?, revealing that mag-DMIP beads were efficient SPE adsorbents.