去甲肾上腺素在多壁碳纳米管修饰玻碳电极上的电化学行为  

Electrochemical behavior of norepinephrine on the multiply wall carbon nanotube modified electrode

作　　者：李明齐[1] 何晓英[1] 蔡铎昌[1] 

机构地区：[1]西华师范大学化学化工学院,四川南充637002

出　　处：《化学研究与应用》2006年第3期302-304,共3页Chemical Research and Application

摘　　要：动物体内的去甲肾上腺素（NE）含量变化反映了肢体神经系统植物交感神经的活动状况，在临床和基础研究中非常重要。用化学修饰电极研究儿茶酚胺类神经递质的电化学行为以及对其进行测定是目前分析化学比较活跃的研究领域。利用羧基化后的多壁碳纳米管（MWC-NT）对电极表面进行修饰除可将材料本身的物化特性引入电极界面外，同时也拥有纳米材料的大比表面积和粒子表面带有较多功能基团的特性，从而对某些物质产生特有的电催化效应。本文将羧基化后的多壁碳纳米管修饰在玻碳电极上，发现该修饰电极对NE有显著的电催化作用，峰电流显著增加，灵敏度高。用于样品测试，结果较好。The electrochemical behavior of norepinephrine （NE） on multiply wall carbon nanotube modified electrode was investigated by cyclic voltammetry（ CV ）and square wave voltammetry（SWV）. Results show that carbon nanotube modified electrode in 0.1 mol/L H3PO4 solutions has an obvious electrocatalytic effect on the oxidation and deoxidization of NE. The oxidation current of NE is linear with it＇s concentration in the range of 1.0 × 10^-6 - 1.5 × 10^-5mol/L and 2. 0 × 10^-5 - 1.0 × 10^-4 mol/L with correlation coefficients of 0. 978 and 0. 9998 ,respectwely. The detection limit is 6.0 × 10^-7 mol/L. While the modified electrode was applied to the determination of injection sample,the result is in good agreement with the stated value.

关 键 词：去甲肾上腺 碳纳米管 修饰电极 电化学 

分 类 号：O646.5[理学—物理化学]