title: Preparation of magnetic multi-functional molecularly imprinted polymer beads for determining environmental estrogens in water samples.
abstract: Magnetic multi-functional molecularly imprinted polymer (mag-MFMIP) beads were prepared for determining environmental estrogens in water samples. This novel material adopted a superparamagnetic microparticle as the supporter and used 17β-estradiol (E2) as the imprinting template, aiming for recognizing many kinds of environmental estrogens simultaneously. Characterization analysis and binding experiments revealed that mag-MFMIP beads had outstanding magnetic property, large adsorption capacity and high competitive selectivity to most of the commonly seen environmental estrogens. When mag-MFMIP beads were used as dispersed solid-phase extraction (SPE) adsorbents in water samples, the recoveries of estriol (E3), bisphenol A (BPA), E2 and ethynylestradiol (EE) were 72.2 - 92.1%, 89.3 - 96.0%, 93.3 - 102% and 89.7 - 95.9%, respectively with relative standard deviation (RSD) lower than 7.0%. These results indicated that mag-MFMIP beads had the potential to be the common adsorbents for many kinds of environmental estrogens, representing a novel application of MIPs in the field of environmental chemistry.
authors.affiliation: Institute of Watershed Science and Environmental Ecology, Wenzhou Medical College, Wenzhou 325035, PR China.
authors.forename: Zhenkun
authors.initials: Z
authors.lastname: Lin
authors.forename: Qiaoya
authors.initials: Q
authors.lastname: He
authors.forename: Lituo
authors.initials: L
authors.lastname: Wang
authors.forename: Xuedong
authors.initials: X
authors.lastname: Wang
authors.forename: Qiaoxiang
authors.initials: Q
authors.lastname: Dong
authors.forename: Changjiang
authors.initials: C
authors.lastname: Huang
mesh_terms: D000327:Adsorption; D004967:Estrogens / Q000032:analysis* / Q000737:chemistry; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D060328:Magnetic Phenomena; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D054802:Molecular Imprinting; D011137:Polystyrenes / Q000737:chemistry*; D052616:Solid Phase Extraction; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D004967:Estrogens; D011137:Polystyrenes; D014874:Water Pollutants, Chemical; D052203:Ferrosoferric Oxide