摘要
采用重铬酸钾容量法 ,测定铜铅阳极泥及碲回收物料中高含量碲。针对阳极泥样品成分复杂的特征 ,确定了最佳溶样介质 ;探讨了Cu2 +、Cd2 +、Bi3+、Ag+、Sb(Ⅲ )、As(Ⅲ )、Pb2 +、Se(Ⅳ )、Sn(Ⅳ )、Au(Ⅲ )等共存元素的影响及其消除方法 ;改善了滴定条件。方法适用于w(Te)>1 %碲的测定 ,样品分析结果与原子吸收法测定结果一致 ,RSD(n =5 )为 0 .4%～ 4.1 %。
Determination of high content of tellurium in anode mud and tellurium scraps by titrimetry with potassium dichromate is reported in this paper. The sample digestion condition is optimized and the interference from coexisting ions of Cu 2+ , Cd 2+ ,Bi 3+ ,Ag +,Sb(Ⅲ),As(Ⅲ),Pb 2+ , Se(Ⅳ), Sn(Ⅳ), Au(Ⅲ) on determination of Te and its elimination are discussed. The method has been applied to the determination of tellurium in samples with w (Te)>1%. The results are in agreement with those determined by AAS with precision of 0.4% to 4.1% RSD ( n =5).
出处
《岩矿测试》
CAS
CSCD
北大核心
2002年第2期143-146,共4页
Rock and Mineral Analysis
