【摘要】 本文研究了２－乙基己基膦酸单２－乙基己酯萃取色层分离－原子发射光谱测定超高纯Ｈｏ２Ｏ３、Ｅｒ２Ｏ３中良量稀土杂质，可用于９９．９９９９％Ｈｏ２Ｏ３、Ｅｒ２Ｏ３的纯度分析。更多还原

【Abstract】 This article applied (2 ethyhexyldrogen 2 ethylhexyl phosphonate)extraction chromatography to separate 14 rare earth impurities from ultra highly pure Er 2O 3 and Ho 2O 3,and then the impurities were determined by atomic emission spectrometry.The average percentage recovery for each element is in the range of 70%～140%.The relative standard deviations of the determination are ±3 3%～2 2%.This method can be applied to the determination of the trace amounts of rare eath impurities in Er 2O 3 and Ho 2O 3 with a purity of 99 999 9% 99 999 99%.更多还原