title: A novel superparamagnetic surface molecularly imprinted nanoparticle adopting dummy template: an efficient solid-phase extraction adsorbent for bisphenol A.
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.
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: Wenjing
authors.initials: W
authors.lastname: Cheng
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Li
authors.forename: Zhiren
authors.initials: Z
authors.lastname: Liu
authors.forename: Xiangping
authors.initials: X
authors.lastname: Chen
authors.forename: Changjiang
authors.initials: C
authors.lastname: Huang
mesh_terms: D000327:Adsorption; D001559:Benzhydryl Compounds; D005618:Fresh Water / Q000032:analysis; D008280:Magnetics; D054802:Molecular Imprinting; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010636:Phenols / Q000032:analysis* / Q000302:isolation & purification; D011108:Polymers / Q000737:chemistry; D052616:Solid Phase Extraction; D017550:Spectroscopy, Fourier Transform Infrared; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D010636:Phenols; D011108:Polymers; C006780:bisphenol A; D000098826:Bisphenol A Compounds