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《Chinese Journal of Analysis Laboratory》 2011-02
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Determination of melamine based on a sol-gel molecular imprinting technique

ZHANG Yi-gen1,QI Wen-jing1,LIU Ying1,SONG Qi-jun1 and JIAO Xin-yuan2(1.School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122;2.Hebei Tiantian Dairy Company Limited,Zhengding 050800)  
Based on sol-gel molecular imprinting technology,a sensitive and selective electrochemical method for the direct determination of melamine in complex matrix was developed.The electrochemical behavior of melamine was initially studied and a possible oxidation mechanism was proposed.The experimental conditions for the electrochemical determination of melamine were optimized.It was found that a characteristic oxidation peak appeared at 0.75 V,and the peak currents were linearly dependant on the logarithm of melamine concentration,I(μA)=10.78lg c(mol/L)+99.76(R=0.9973).It was proved that the method has excellent selectivity.The proposed method has been successfully applied to the determination of the concentration of melamine in the milk and soymilk samples and the recoveries were in the range of 97.5%～103.3%.
【Key Words】： Molecular Imprinting Sol-gel Cyclic voltammetry Melamine
【Fund】： 国家自然科学基金(20977042);; 石家庄市科技攻关项目(09117272A)资助
【CateGory Index】： O657.1;TS207.3
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【Citations】
Chinese Journal Full-text Database 2 Hits
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1 WANG Miao1,LIU Ping2,JIA Jin-ping1,HU Xiao-fang1(1.School of Environmental Science and Engineering;2.School of Chemistry and Chemical Technology,Shanghai Jiaotong University,Shanghai 200240);Determination of Benzene and Its Analogues in a Commercial Adhesive by Headspace Solid-phase Micro-extraction Using a Novel Biphenyl-imprinted Sol-gel Coated Fibre[J];Environmental Science & Technology;2006-06
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