摘要
采用玻碳电极为工作电极 ,以醋酸钠—醋酸—氯化钾溶液为底液 ,用二次导数阳极溶出伏安法测定了硫酸锌中的微量铅和镉。峰电位分别为 - 0 .4 3V (Vs.SCE)和 - 0 .6 2V (Vs .SCE) ,线性范围分别为 0～2 .0 μg/(2 5mL) 和 0～ 0 .8μg/(2 5mL)。方法准确、快速。
The determination of micro-amount of lead and cadmium in zinc sulfate by anodic stripping voltammetry is described.A glassy carbon electrode was used as working electrode in the method.It was found that Pb 2+ had a very sensitive ASV peak at the potential of -0.43 V(Vs.SCE)and Cd 2+ at -0.62 V (Vs.SCE)in the solution of NaAc-HAc-KCl.The linear relationship between the ion concentrition and wave length of Pb existed in the range of 0～2.0 μg/25 mL,and that of Cd existed in the range of 0～0.8 μg/25 mL.The method was proved to be a accurate,fast and simple method.
出处
《无机盐工业》
CAS
2003年第1期54-55,共2页
Inorganic Chemicals Industry
关键词
阳极溶出伏安法
测定
硫酸锌
铅
镉
玻碳电极
anodic stripping voltammetry
glassy carbon electrode
lead
cadmium
zinc sulfate
