碲料中高含量碲的测定

Determination of High Tellurium in Tellurium Scraps

针对碲料的复杂成分以及高含量特性,本文采用王水溶矿,并加入适量氟化铵助溶,并用硫磷混合酸冒烟,用重铬酸钾滴定法测定了碲料中的高含量碲。针对碲料的复杂成分,探讨了最佳溶样介质,反应时间和温度,以及多种共存离子如Pb2+、Cu2+、Bi3+、Sb3+、As(Ⅲ)、Sn(Ⅳ)等的影响。

For complicated composition and high content of tellurium material characteristics , the determination method in tellurium scraps , with aqua regia dissolving ore and potassium dichromate titration was discussed , and the optimum digestion medium , reaction temperature and velocity were studied , as well as the influence of coexisting ions of Pb^2＋, Cu^2＋, Bi^3＋, Sb^3＋, As（Ⅲ）, Sn（Ⅳ） and so on.