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Reference type: Journal
Authors: Lin ZK, Cheng WJ, Li YY, Liu ZR, Chen XP, Huang CJ
Article Title: A novel superparamagnetic surface molecularly imprinted nanoparticle adopting dummy template: An efficient solid-phase extraction adsorbent for bisphenol A.
Publication date: 2012
Journal: Analytica Chimica Acta
Volume: 720
Issue: (1)
Page numbers: 71-76.
DOI: 10.1016/j.aca.2012.01.020
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0003267012001201

Abstract: 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-1, revealing that mag-DMIP beads were efficient SPE adsorbents.
Template and target information: bisphenol F, BPF, bsiphenol A, BPA
Author keywords: molecularly imprinted polymer, superparamagnetic, dummy template, Solid-phase extraction, bisphenol A

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