Abstract: A novel magnetic plasticizer molecularly imprinted polymers (MIPs) adsorbing material (MIP@mSiO2-β-CD@Fe3O4) was successfully synthesized for the determination of 6 phthalic acid esters in water, milk and wine samples. The molecularly imprinted polymers were prepared via precipitation polymerization and a surface molecular imprinting technique, using a cyclodextrin-modified magnetic meso-porous material (mSiO2-β-CD@Fe3O4) as magnetic supporter, dibutyl phthalate and butyl benzyl phthalate as the dual template molecules, methacrylic acid as the functional monomer, and ethyleneglycol dimethacrylate as the cross-linking agent. The polymers were characterized by scanning electron microscopy, Infrared spectroscopy and X-ray powder diffraction. Thermogravimetric analysis and static and dynamic adsorption experiments were carried out to assay its stability and selectivity. Under optimal experimental conditions, a magnetic solid phase extraction with MIP@mSiO2-β-CD@Fe3O4 coupled to gas chromatography-mass spectrometry method was successfully developed for the determination of phthalic acid esters. The established method achieved a good linear range of 0.10~8.00 μg/mL (R > 0.99) and a low detection limit of within the range of 1.0~5.0 μg/L. An average recovery rate of 80.2%~103 with relative standard deviation < 6.7% was obtained upon the application of the developed method to detect phthalic acid esters in actual aqueous samples. This article is protected by copyright. All rights reserved
Author keywords: Aqueous samples, Magnetic Plasticizer, Molecularly imprinted polymer, Phthalic acid esters, Trace detection