高等学校化学学报

高等学校化学学报

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聚鲁米诺-金属离子复合物膜的电化学发光特性及其分析应用研究

宋玲, 郑行望, 李桂新   

  1. 陕西师范大学化学与材料科学学院, 西安 710062
  • 收稿日期:2006-12-28 修回日期:1900-01-01 出版日期:2007-10-10 发布日期:2007-10-10
  • 通讯作者: 郑行望

Electrochemiluminescence Performances of Compositing Films of Polyluminol with Metal Ions and Its Analytical Application

SONG Ling, ZHENG Xing-Wang*, LI Gui-Xin   

  1. College of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, China
  • Received:2006-12-28 Revised:1900-01-01 Online:2007-10-10 Published:2007-10-10
  • Contact: ZHENG Xing-Wang

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被引次数

11

摘要： 建立了一种基于电聚合和配位效应构建聚鲁米诺-金属离子复合物膜修饰电极测定尿素的电化学发光分析新方法, 并且提出了一种优化聚鲁米诺电化学发光分析特性的新思路. 在最佳条件下, 增敏电化学发光信号与尿素的质量浓度在2.0×10-9—1.0×10-7 g/mL 范围内呈线性关系, 检出限为1.7×10-10 g/mL.

关键词: 聚鲁米诺膜, 电化学发光, 尿素检测, 镍离子, 电聚合

Abstract: In this paper, it was found that the compositing films made from polyluminol and some metal ions(such as Ni2+, Fe2+ and Co2+ ) can be easily generated on the surface of the graphite electrode by electropolymerization of luminol and these metal ions in the acidic medium. Compared to other resulting films, the compositing films made from polyluminol and Ni2+ presented the better electrochemiluminescence(ECL) analytical performance for urea based on its sensing effect for weak ECL signal of electro-oxidation polyluminol. On the basis of these results, a novel ECL method for the determination of urea in urine samples was developed, and a new method to improve the ECL analytical performances of polyluminol by compositing metal ions was also proposed. Under the optimum experimental conditions, the ECL response was linearly to the concentration of urea within the range of 2.0×10-9—1.0×10-7 g/mL with a detecting limit of 1.7×10-10 g/mL.

Key words: Polyluminol film, Electrochemiluminescence(ECL), Determination of urea, Nickel ion, Electropolymerization

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