In this article, a magnetic molecularly imprinted polymer (MMIPs) based on Fe3O4@SiO2 has been synthesized for simply extraction of clozapine (CLZ) from human serum. The MIPs were coated on the Fe3O4@SiO2-NH2 surface by the copolymerization of methacrylic acid with ethylene glycol dimethacrylate; and clozapine as template molecule. The properties of obtained Fe3O4@SiO2-MIPs were characterized by fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy, dynamic light scattering, energy dispersive X-ray analysis (EDX), vibration sample magnetometer and rebinding experiments. The Fe3O4@SiO2-MIPs showed a highly improved imprinting capacity, a fast adsorption equilibrium, and significant selectivity in molecularly imprinted solid-phase extraction of CLZ from human serum. In addition, MMIPs were regenerated and their adsorption capacity in the eighth use was about 6.67% loss in clozapine solution. Also, the intra and inter-day precision values wereless than 6 and 4%, respectively. These results suggest Fe3O4@SiO2-MIPs may be used for selective extraction and analysis of CLZ in human serum.
کلید واژگان :Core-shell magnetic nanoparticles; Molecularly imprinted polymers; Selective sorption; Clozapine; Magnetic susceptibility
ارزش ریالی : 600000 ریال
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