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《Chemical Research and Application》 2013-10
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Preparation and application of the copper ion voltametric sensors based on molecularly imprinting technology

XU Li-juan;LI Jin-shu;LU Xiao-quan;WANG Zhi-hua;Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province,College of Chemistry&Chemical Engineering,Northwest Normal University;  
A novel voltammetric sensor based on molecularly imprinted polymer film has been developed for copper ion detection. The sensitive film was prepared by co-polymerization of o-phenylenediamine and copper ion on the carbon nanotubes modified glassy carbon electrode. The molecularly imprinted sensor was characterized by differential pulse voltammetry( DPV) and cyclic voltammetry( CV). Under the optimum conditions,the linear relationships between current and logarithmic concentration were obtained in the range from1. 0 × 10-10to 2. 0 × 10-3mol·L-1,with the linear regression equation Ip=19. 99-1. 666lgC( I: μA,C: mol·L-1),correlation coefficient 0. 9920. The detection limit of 1. 8×10-11mol·L-1was achieved( S/N = 3). This sensor was used successfully for Cu2+determination in drinking water.
【Fund】: 国家自然科学基金项目(20965007)资助;; 甘肃省高分子材料重点实验室项目资助
【CateGory Index】: TP212
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