多壁碳纳米管修饰玻碳电极检测铅离子的研究  

A Study of MWCNTs/GC Electrodes for the Detection of Pb^(2+)

作　　者：黄柱进[1] 高川[1] 刘雅琼[1] 陈明明[1] 冯艳龙[1] 董玉林[1] 魏登贵[1] 李曦[1] 

机构地区：[1]武汉理工大学理学院化学系,湖北武汉430070

出　　处：《分析科学学报》2014年第1期59-62,共4页Journal of Analytical Science

基　　金：国家自然科学基金(No.51273155);中央高校基本科研业务费专项资金(No.2012-Ia-022);国家大学生创新创业训练计划(No.20121049714011)

摘　　要：采用阳极溶出伏安法研究了Pb2+在多壁碳纳米管(MWCNTs)修饰玻碳(GC)电极上的电化学特性,并探讨了溶液pH、MWCNTs修饰层数、富集时间、富集电位与干扰离子等因素的影响。实验表明,Pb2+的线性扫描峰电流与其浓度在0.8~50μmol/L范围内呈现非常好的线性关系,检测限为0.68μmol/L。该电极具有良好的稳定性、重现性和抗干扰能力,并可用于实际水样中Pb2+的检测。Electrochemical properties of Pb2＋ at MWCNTs modified glassy carbon electrode was studied by anodic stripping voltammetry. The experimental conditions such as the pH of the solution, the amount of MWCNTs, deposition time, deposition potential and interfering ions were investigated by anodic stripping linear voltammetry. The relationship between peak current and the concentration of Pb2＋ was linear in the range of 0. 8-50 9mol/L with a detection limit of 0. 68 μmol/L. The MWCNTs/GC electrodes was applied for the determination of Pb2＋ in real water samples, and it also showed good stability, reproducibility and anti-interference ability.

关 键 词：多壁碳纳米管 修饰电极 铅离子 阳极溶出伏安法 

分 类 号：O657.1[理学—分析化学]