阳极溶出伏安法同时测定锌电解液中微量镉和铅

摘要

Differential pulse polarography anodic stripping voltammetry is employed to determine trace cadmium and lead in zinc electrolyte simultaneously. The sensitive stripping peaks of cadmium and lead are found at -0. 6V and -0.4V respectively. Under the optimum experimental conditions, the relative standard deviations are 0.6% and 0.9% with recovery rate of 96.0% ～100.4% and 96. 4% ～104.0% respectively. The results are satisfactory.%采用微分脉冲阳极溶出伏安法同时测定锌电解液中微量镉和铅,Cd2+,pb2+分别在-0.6V 和-0.4V左右产生灵敏溶出峰.在选定的最佳实验条件下,通过标准加入法对锌电解液中微量镉和铅进行分析,其相对标准偏差分别为0.6％,0.9％,回收率分别为96.0％～ 100.4％和96.4％～ 104.0％,测定结果令人满意.