~(241)Am激发的能量色散X荧光在重稀土分离检测中的应用

• 作 者: 贾江涛 马小桃 严纯华 廖春生 李标国
• 机 构: 北京大学稀土材料化学及应用国家重点实验室
• 出 处: 中国稀土学报
• 发表日期: 1997年04期
• 关键词: 能量色散 Am 重稀土 在线分析 吸收函数 快速分析方法 高纯锗 分离过程 稀土材料 分析线

建立了一种２４１Ａｍ作激发源，高纯锗作探测器的能量色散Ｘ射线荧光（ＥＤＸＲＦ）快速分析方法，并离线分析了含Ｈｏ、Ｙ、Ｅｒ、Ｔｍ的重稀土分离过程中槽体盐酸盐水溶液的稀土组成。该方法除作了适当简化外，还优化选择了分析线，并引入吸收函数校正吸收。结果表明：该法在稀土浓度介于０１～３００ｇ／Ｌ的范围内分析相对误差小于５％，能满足重稀土分离中在线分析的要求。

A rapid analytical method of energy dispersive X - ray fluorescence (EDXRF) with 241Am as excitation source and high purity germanium as detector was established and the effects of heavy rare earth elements containing Ho, Y, Er and Tm on the separation of hydrochloric acid Rare earth salt solution composition. In addition to making the appropriate simplification, the method also optimizes the selection of the analytical line and introduces an absorption function to correct the absorption. The results show that the relative error of this method is less than 5% when the concentration of rare earth is between 01 ~ 300g / L, which can meet the requirements of on-line analysis in heavy rare earth separation.