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《Chemical Research and Application》 2013-07
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Synthesis of dimethyl phthalate imprinted adsorption material in aqueous media and its application in solid phase extraction

ZHANG Jin*,JIN Ya-hua,ZUO Cong-yun,WANG Chao-ying(College of Chemistry and Life Science,Guizhou Normal College,Guiyang,550018,China)  
Molecularly imprinted polymers(MIP)for dimethyl phthalate(DMP)was synthesized on the surface of silica gel with DMP as template molecule,methylacrylamide(MAM)as functional monomer and N,N′-methylenebis acrylamide((MBAA))as a crosslinking agent in methanol-water system.The intermolecular interaction between MAM and DMP was confirmed by ultraviolet spectroscopy(UV)and the structure of MIP was analyzed by fourier transform infrared spectroscopy(FTIR).The binding properties of the MIP were evaluated by equilibrium adsorption experiment method.The dissociation constant(Kd)and the max adsorption capacity(Qmax)of the template-polymer system was analyzed via scatchard plot.The experiments of binding different substrates indicated that the MIP possessed good affinity and selectivity for DMP.In addition,the MIP was successfully used as a stationary phase for solid-phase extraction(SPE)to enrich DMP from several environmental water samples and the recoveries were in the range of 90.28-95.25%with RSD of 3.52-7.61%.
【Fund】: 贵州省科学技术基金项目(J20112078)资助;; 贵州省特色重点学科建设基金(2012442)资助
【CateGory Index】: O658.2
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