以镍铬合金为基体的铋膜电极的构建及其应用  

Studies on the fabrication and application of the bismuth film nichrome electrode

作　　者：赵文静[1] 汪振辉[1] 李全民[1] 

机构地区：[1]河南师范大学化学与环境科学学院,河南省环境污染控制重点实验室,新乡453007

出　　处：《分析试验室》2012年第2期112-114,共3页Chinese Journal of Analysis Laboratory

摘　　要：采用循环伏安法以镍铬合金为基体构建了铋膜/镍铬合金电极,以扫描电镜表征其表面形貌,利用线性扫描伏安法研究了Pb(II)、Cd(II)在该电极上电化学行为。结果表明:在0.20 mol/L HAc-NaAc缓冲溶液(pH4.5)中,该电极对Pb(II)、Cd(II)离子有较好的电催化活性,Pb(II)、Cd(II)的阳极溶出峰电流与其浓度分别呈良好的线性关系,检出限分别为6.39μg/L和3.52μg/L。In this paper,nichrome was adopted as the substrate to fabricate the bismuth film nichrome electrode（BNCE） by cyclic voltammetry.The electrochemical properties of BNCE was characterized by linear sweep stripping voltammetry,and its surface morphology was observed with scanning electron microscope（SEM）.The results revealed that BNCE exhibited sensitive electrochemical responses to Pb（Ⅱ） and Cd（Ⅱ） in 0.20 mol/L HAc-NaAc buffer solution（pH4.5）.Two sets of well-defined stripping peak currents increased linearly with increasing their concentrations,and the detection limits were respectively 6.39 μg/L and 3.52 μg/L.

关 键 词：预镀铋膜 镍铬合金基体电极 伏安法 铅、镉 

分 类 号：O657.1[理学—分析化学]