微分脉冲极谱法测定锌电解液中微量锗  

Determination of trace germaniumin zinc plant electrolyte with differential pulse polarography

作　　者：程良娟[1] 张旭[1] 沈庆峰[1] 刘鸿飞[1] 盛晓星 张云彭 CHENG Liang-juan ZHANG Xu SHEN Qing-feng LIU Hong-fei SHENG Xiao-xing ZHANG Yun-peng(Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 65009)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《分析试验室》2017年第7期837-840,共4页Chinese Journal of Analysis Laboratory

摘　　要：选用HClO_4-EDTA-茜素红-V(Ⅳ)体系,在悬汞电极上采用微分脉冲极谱法测定湿法炼锌电解液中的微量Ge,实验结果表明:Ge在HClO_4介质下和茜素红-V(Ⅳ)发生络合反应产生灵敏度极高的极谱波,峰电位为-0.424 V。Ge质量浓度在0.13~20μg/L范围内与相应峰电流有良好的线性关系,检出限为2.3 nmol/L,其相对标准偏差为0.014%~1.2%,回收率为98.1%~102.4%。方法可应用于湿法炼锌电解液中微量锗的测定。Germanium is detrimental to the electrochemical deposition of zinc, and its concentration needs to be monitored by differential pulse polarography. HC104-EDTA-alizarin red-vanadium （ IV ）. Alizarin red has been studied. The results showed that germanium with alizarin red-V （IV） produces a very sensitive polarographic wave at -0. 424 V in presence of HC104. The mass concentration of germanium showed a good linear relationship to the peak current in rang of 0. 13 -20 μg/L with the detection limit of 2.3 nmol/L. The relative standard deviations were 0. 014% - 1.2%. The recoveries were 98. 1% - 102. 4%. The developed method has been applied to determine germanium in zinc plant electrolyte.

关 键 词：锗 悬汞电极 微分脉冲极谱法 湿法炼锌 

分 类 号：TF03[冶金工程—冶金物理化学]