4,5-二溴苯基萤光酮-CTAB光度法测定矿物中微量铟  

Spectrophotometric Determination of Indium with 4,5-di-bromophenylfuorone in The Presence of CTMAB

作　　者：王东进[1] 何文全[1] 蔡志高 潘庆洪 Wang Dongjim

机构地区：[1]福州大学化学系 [2]中山大学化学系

出　　处：《岩矿测试》1985年第1期82-83,I0015,共3页Rock and Mineral Analysis

摘　　要：本文较详细地研究了In^(3+)-Br-PF-CTAB三元络合物的形成条件、组成及干扰的消除,拟定了矿物中微量铟的测定方法。实验部分一、主要试剂铟标准溶液(100/g/ml):准确称取0.1000克铟(光谱纯)溶于20一30毫升浓盐酸中,用水稀释至1升。A new sensitive spectrophotometric method for the determination of In(I)with 4,5-dibromophenylfluorone and CTMAB is descr ibed.The molar absorptivity of the ternary complex is 1.63×10^(5) l mol^(-1) cm^(-1) at 590nm.The molar ratio of In/Br-PF/CTMAB is 1:3:6.Beer's law obeyed for indium in the range of 0-10μg/10 ml.In(Ⅲ)is extracted with n-butyl actate from the sample solution in 5 N hydrobromic acid.The method permits deter mination of n(10^(-1)-10^(-5))%of Indium.

关 键 词：三元络合物 光谱纯 微量铟 二溴苯基萤光酮 标准溶液 浓盐酸 CTAB 光度法测定 

分 类 号：O65[理学—分析化学]