期刊
ANALYTICA CHIMICA ACTA
卷 720, 期 -, 页码 71-76出版社
ELSEVIER
DOI: 10.1016/j.aca.2012.01.020
关键词
Molecularly imprinted polymer; Superparamagnetic; Dummy template; Solid-phase extraction; Bisphenol A
资金
- National Natural Science Foundation of China [21107083]
- National Environmental Protection Public Welfare Science and Technology Research Program of China [201109013]
- Zhejiang Province Welfare Technology Applied Research Project [2011C23115]
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. (C) 2012 Elsevier B.V. All rights reserved.
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