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研究论文

壳聚糖修饰电极测定碘的研究

  • 刘斌 ,
  • 孙向英 ,
  • 徐金瑞
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  • 华侨大学材料科学与工程学院,华侨大学材料科学与工程学院,华侨大学材料科学与工程学院 福建泉州362011 ,福建泉州362011 ,福建泉州362011

收稿日期: 2004-02-28

  修回日期: 2004-02-28

  网络出版日期: 2004-02-28

Study on Determination of Iodine Ion at Chitosan Modified Glassy Carbon Electrode

  • LIU Bin~ ,
  • SUN Xiang-ying ,
  • XU Jin-rui
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  • (College of Materials Science and Engineering,Huaqiao University, Quanzhou 362011,China

Received date: 2004-02-28

  Revised date: 2004-02-28

  Online published: 2004-02-28

摘要

应用共价键合法将壳聚糖修饰在玻碳电极表面,研究了I-在该修饰电极上的微分脉冲阳极溶出伏安特性,并对相关机理进行探讨.实验表明,修饰电极在pH为4.0的0.1mol·L-1KH2PO4溶液中,对I 具有良好的吸附性和选择性,电极响应灵敏.其阳极溶出峰电流在2.0×10-6~2.0×10-3mol·L-1I-浓度范围内呈良好线性关系,检出下限达2.0×10-7mol·L-1.该法应用于食用碘盐中总碘量的测定,取得较好的结果.

本文引用格式

刘斌 , 孙向英 , 徐金瑞 . 壳聚糖修饰电极测定碘的研究[J]. 电化学, 2004 , 10(1) : 59 -64 . DOI: 10.61558/2993-074X.1545

Abstract

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).

参考文献

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