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《Electrochemistry》 2004-01
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Study on Determination of Iodine Ion at Chitosan Modified Glassy Carbon Electrode

LIU Bin~,SUN Xiang-ying,XU Jin-rui (College of Materials Science and Engineering,Huaqiao University, Quanzhou 362011,China)  
In this paper, a chitosan modified glassy carbon electrode was prepared by the method of covalent-bond reaction, and the anodic stripping voltammetric characteristics of iodine on the modified electrode was studied. The results showed that the modified electrode has higher adsorption and selectivity for I~-, and the sensitivity for I~- has been much improved in 0.1 mol·L~(-1) KH_2PO_4 solution (pH=4.0). The anodic stripping peak current of I~- on the modified electrode varied linearly with I~- concentration in the range of 2.0×10~(-6)~2.0×10~(-3) mol·L~(-1), and the detection limit reached 2.0×10~(-7) mol·L~(-1).
【Fund】: 福建省自然科学基金项目 (D0 3 1 0 0 1 6)资助
【CateGory Index】: O657.14
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