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Reference type: Journal
Authors: Yan HY, Cheng XL, Sun N
Article Title: Synthesis of Multi-core-shell Magnetic Molecularly Imprinted Microspheres for Rapid Recognition of Dicofol in Tea.
Publication date: 2013
Journal: Journal of Agricultural and Food Chemistry
Volume: 61
Issue: (11)
Page numbers: 2896-2901.
DOI: 10.1021/jf400847b

Abstract: Magnetic multi-core-shell molecularly imprinted microspheres (Fe3O4@MIMs) based on multi-Fe3O4 nanoparticles as core structures and dummy imprinted materials as shell structures have been synthesized by a surface-imprinted technique using dichlorodiphenyltrichloroethane as the dummy template and were successfully used as a specific adsorbent for rapid isolation of trace levels of dicofol from teas. The resulting Fe3O4@MIMs were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, vibrating sample magnetometer, and thermogravimetric analysis. In comparison to the imprinted polymers prepared by the traditional polymerizations, the obtained Fe3O4@MIMs showed regularly spherical shape, porous morphologies, high saturation magnetization [56.8 electromagnetic units (emu)/g], and rapid response time (15 s). The as-synthesized Fe3O4@MIMs, which incorporated the excellent molecular recognition and magnetic separation properties, were successfully used as special adsorbents for rapid isolation and extraction of trace levels of dicofol and its analogues from a complicated tea matrix
Template and target information: dicofol, dichlorodiphenyltrichloroethane, dummy template
Author keywords: Multi-core-shell imprinted microsphere, magnetic separation, rapid isolation and extraction, Dicofol, tea

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