萃取分离电感耦合等离子体原子发射光谱法测定钢中的微量稀土元素

• 作 者: 尹志辉 张亚杰
• 机 构: 中国科学院长春应用化学研究所,吉林工业大学应用化学系 长春130022
• 出 处: 分析化学
• 发表日期: 1995年11期
• 关键词: 萃取分离 微量稀土元素 溶剂萃取 稀土元素. 基体元素 光谱干扰 酸度条件 光谱测定 标准储备液 甲基异丁基酮

本文采用苯甲酰苯胲(BPHA)-甲基异丁基酮(MIBK)溶剂萃取方法将钢中基体元素Fe,Ti,Mo,V等大量非稀土元素萃入有机相中,稀土元素留于水溶液中.由电感耦合等离子体原子发射光谱(ICP-AES)仪直接测定水溶液中的微量稀土元素La,Ce,Pr,Nd.Sm,Y和Gd,实验结果与推荐值基本相符,方法的回收率为96％～108％,相对标准偏差低于5％.

In this paper, a large amount of non-rare earth elements such as Fe, Ti, Mo, V and so on were extracted into the organic phase by the solvent extraction method of BPHA-MIBK. The rare earth elements Aqueous solution.The trace rare earth elements La, Ce, Pr, Nd, Sm, Y and Gd in aqueous solution were directly determined by inductively coupled plasma atomic emission spectrometry (ICP-AES), and the experimental results were in good agreement with the recommended values. Rates ranged from 96% to 108% with relative standard deviations below 5%.