锗与茜素S-络合物吸附波的探讨及其在矿石中的应用  

A Research of Polarographic Adsorption Catalytic Wave of Germanium and Its Application for Determination of Germanium in Ores

作　　者：卢巽珍[1] Lu Xun-zhen

机构地区：[1]中国地质科学院天津地质矿产研究所

出　　处：《岩矿测试》1983年第4期292-294,I0006,共4页Rock and Mineral Analysis

摘　　要：锗是典型的稀散元素,一般伴生于岩石矿物之中,其含量很低,需要有个灵敏的测定方法,目前仍普遍采用苯芴酮萃取比色法。近年来鉴于许多文献的报导锗与含有或基团的有机试剂能形成络合物的分析特征,我们选择了几种有机试剂(如溴邻苯三酚红、苯芴酮、变色酸、茜素—S)进行条件试验。发现锗与茜素—S络合物在各种支持电解质中PH2.5-2.6左右,均有对称性良好的导数示波极谱波。The polarographic behaviour of germanium complex with alizarin-S has been studied in this paper.The germanium complex gives a high sensitive wave at dropping-mercury electrode at-0.68 v.The optimum condition for determination of Ge is 0.2 M ammonium chloride,2%formic acid,and 0.001 M alizarin-S.The linear relationship between the peak height and concentration,of germanium occurs in the range of 0.005-0.8 ppm.Some interfering ions(anodic and cathodic)are tested.

关 键 词：溴邻苯三酚红 络合物吸附波 苯芴酮 变色酸 有机试剂 萃取比色法 支持电解质 岩石矿物 

分 类 号：O65[理学—分析化学]