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  • Title: Preparation of magnetic molecularly imprinted polymers for bisphenol A and its analogues and their application to the assay of bisphenol A in river water.
    Author: Hiratsuka Y, Funaya N, Matsunaga H, Haginaka J.
    Journal: J Pharm Biomed Anal; 2013 Mar 05; 75():180-5. PubMed ID: 23262418.
    Abstract:
    Magnetic molecularly imprinted polymers (M-MIPs) for bisphenol A (BPA) and its structural analogues have been prepared by a multi-step swelling and polymerization method using uniformly-sized magnetic particles as a shape template. Binding experiments and Scatchard analyses revealed that two classes of binding sites were formed on M-MIP(BPA). The retention and molecular-recognition properties of M-MIPs for BPA and its structural analogues were evaluated using a mixture of phosphate buffer and acetonitrile or a mixture of water and acetonitrile as a mobile phase by LC. M-MIPs for BPA and [²H₁₆]BPA (BPA-d₁₆), M-MIP(BPA) and M-MIP(BPA-d16), showed almost the same imprinting factors for BPA, while M-MIP for bisphenol B (2,2-bis(4-hydroxyphenyl)butane, BPB), M-MIP(BPB), gave the moderate imprinting factor for BPA. Furthermore, M-MIP(BPB) was applied for the selective extraction and determination of BPA in environmental water samples. The concentration of BPA in river water samples was determined to be 68 ng/L.
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