铝镓铟—茜素S络合物的示波极谱研究——Ⅲ矿石中镓和铟的同时测定  

An Oscillo-Polarographic Study of Aluminium-Gallium-Indium-Alizarine S complexes III Simultaneous determination of Gallium and Indium in ores

作　　者：莫茂生 邓益和 李禾 方浩 Mo Mad-sheng

机构地区：[1]地质部矿产综合利用研究所

出　　处：《岩矿测试》1983年第3期226-227,I0008,共3页Rock and Mineral Analysis

摘　　要：Sommer曾提出用脉冲极谱测定镓和铟,灵敏度分别达到0.05ppm镓和0.1ppm铟。本文在前一工作的基础上,进一步研究了镓铟—茜素S络合物的吸附催化波。在0.26M氧化钾—0.08M乙酸钠(pH5)的底液中,当有1×10M茜素S存在下,波高与浓度在0.01—0.4微克镓/毫升,0.004—0.4微克铟/毫升之间呈线性关系。峰电位分别为-1.13伏和-0.63伏(对S、C、E),因此可在同一底液中同时测定镓和铟。The polarographic catalytic waves of gallium and indium have been studied by oscillo-polarogrphy in potassium chloride-sodium acetate-alizarin S at pH 5.0.The peak potential appears at-1.13 v(Vs.S.C.E)for gallium and-0.63 v for indium.The wave height is directly proportional to the concentration of gallium in the range of 1.5×10^(-7)M to 6×10^(-6)M and indium in range of,4×10-8 M to 4×10^(-6)M.This method has been used for simultaneous determination of trace gallium and indium in ores.

关 键 词：脉冲极谱 示波极谱 氧化钾 底液 线性关系 峰电位 乙酸钠 络合物 

分 类 号：R28[医药卫生—中药学]