CHROMATOGRAPHIC-SEPARATION OF NIOBIUM AND TANTALUM IN A HYDROFLUORIC-ACID HYDROCHLORIC-ACID SYSTEM WITH MACROPOROUS POLYACRYLATE RESIN BEADS

被引：2
作者：
WAKUI, Y
MATSUNAGA, H
ITABASHI, O
机构：
[1] Tohoku National Industrial Research Institute, Nigatake
来源：
ANALYTICAL SCIENCES | 1995年 / 11卷 / 01期
关键词：
NIOBIUM; TANTALUM; AMBERLITE XAD-7; ADSORPTION; CHROMATOGRAPHY;
D O I：
10.2116/analsci.11.23
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The separation of niobium and tantalum was examined by using macroporous polyacrylate polymer beads (Amberlite XAD-7) as an adsorbent in hydrofluoric acid-hydrochloric acid mixtures. The adsorption of niobium and tantalum was measured as a function of each acidic concentration; it was found that niobium showed a lesser adsorption than did tantalum, and that both metals could be released by weakly acidic solutions. Column chromatography was carried out using the resin as a stationary phase and acidic solutions of appropriate concentrations as a mobile phase. The niobium and tantalum were successfully separated from each other, and application to a multielemental sample containing both metals was also demonstrated. By using this chromatographic system, trace tantalum was effectively removed from the niobium matrix.
引用
收藏
页码：23 / 27
页数：5
相关论文
共 26 条
123