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《Journal of Functional Materials》 2011-12
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Preparation and properties of molecularly imprinted polymeric microspheres for recognition of omethoate

HOU Chang-jun1,HUANG Qing-jing1,HUO Dan-qun1,YANG Mei1,FA Huan-bao2,ZHANG Liang3,SHEN Cai-hong3,ZHANG Su-yi1(1.College of Bioengineering,Chongqing University,Chongqing 400044,China; 2.College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400044,China; 3.Luzhou Laojiao Corporation Limited,Luzhou 646000,China)  
Molecularly imprinted microspheres(MIPMs) for recognition of omethoate and non-molecularly imprinted microspheres(NMIPMs) were synthesized by suspension polymerization.Methacrylic acid was used as functional monomer.Then,morphologies of MIPMs and NMIPMs were characterized by scanning electron microscopy(SEM),which showed that the diameters were between 5-25μm.The isotherm binding of MIPMs and NMIPMs at different concentrations of omethoate demonstrated that MIPMs absorbed more substrates than NMIPMs.The data obtained in equilibrium adsorption experiment was processed by Scatchard analysis,which displayed that the MIPMs had two different affinity binding sites.The dissociation constants were calculated to be 0.131 and 5.178mmol/L,and the maximum absorption quantities were estimated to be 3.890 and 62.232μmol/g respectively.MIPMs also showed good selectivity for omethoate through the isotherm binding test of three other different substrates which were diomethoate,isocarbophos and phorate.
【Key Words】： omethoate suspension polymerization molecularly imprinted microsphere absorption properties solectivity properties
【Fund】： 国家高技术研究发展计划(863计划)资助项目(2006AA04Z349);; 重庆市重点攻关资助项目(2008AB2024);; 中央高校基本科研业务费资助项目(CDJZR10230005);; 国家质检总局科研计划检验检疫领域资助项目(2011IK254);; 酿酒生物技术及应用四川省重点实验室开放基金资助项目(NJ2009-04)
【CateGory Index】： TQ450.1
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