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.
出处
《分析试验室》
CAS
CSCD
北大核心
2012年第2期112-114,共3页
Chinese Journal of Analysis Laboratory
关键词
预镀铋膜
镍铬合金基体电极
伏安法
铅、镉
Nichrome substrate
Bismuth film/nichrome electrode
Linear sweep voltammetry
Pb（Ⅱ）、Cd（Ⅱ）
