APPLICATION OF MOLECULAR IMPRINTED POLYMERS FOR SELECTIVE SOLID PHASE EXTRACTION OF BISPHENOL A

作者：Poliwoda Anna^*; Moscipan Malgorzata; Wieczorek Piotr P

来源：Ecological Chemistry and Engineering S-Chemia i Inzynieria Ekologiczna S, 2016, 23(4): 651-664.

DOI：10.1515/eces-2016-0046

• bisphenol A
• molecularly imprinted polymer
• 1,1'-azobis(cyclohexanecarbonitryle)
• water analysis
• solid-phase extraction

Selective molecularly imprinted polymers (MIPs) with bisphenol A as template were synthesized using the non-covalent imprinting approach. MIPs were prepared using thermally initiated polymerization with 1,1'-azobis(cyclohexanecarbonitryle) (ACHN) as initiator and ethylene glycol dimethacrylate (EDMA) as a cross-linking agent. The tested functional monomers included methacrylic acid, acrylamide, and 4-vinylpyridine. The selectivity of the BPA-MIP for the solid phase extraction of bisphenol A was tested in samples containing other related alkylphenols. The polymers prepared in acetonitrile using methacrylic acid or acrylamide as monomer showed the highest selectivity towards target analyte (the selectivity ratio 8: 1, respectively for MIP and NIP). The proposed procedure has been proven to be an effective for selective extraction of bisphenol A in aqueous samples (recoveries over 85%) enabling detection and quantification limits of 25 and 70 mu g/ dm(3), respectively based on 10 cm(3) of sample volume, with relative standard deviations (RSD) lower than 6%. The obtained molecularly imprinted material showed interesting properties for selective extraction and preconcentration of studied analyte from large volumes of aqueous samples without any problems of cartridge clogging.

• 出版日期2016-12