萃取色谱分离-原子发射光谱测定超高纯氧化铥、氧化镱和氧化镥中痕量稀土杂质  

Determination of Rare-Earth Impurities in Ultra-pure Thulium Oxide, Ytterbium Oxide, Lutetium Oxide by Extraction Chromatography-Atomic Emission Spectrometry

作　　者：彭春霖[1] 李武帅[1] 袁甫[1] 綦文娣[1] 冯文达 王旭生 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《分析化学》1997年第4期377-381,共5页Chinese Journal of Analytical Chemistry

摘　　要：用２－乙基己基膦酸单２－乙基己酯萃取色谱分离－原子发射光谱测定超高纯Ｔｍ２Ｏ３、Ｙｂ２Ｏ３、Ｌｕ２Ｏ３中痕量稀土杂质，可用于纯度为９９．９９９９％～９９．９９９９９％（不含非稀土杂质）Ｔｍ２Ｏ３、Ｙｂ２Ｏ３、Ｌｕ２Ｏ３的纯度分析，１４个稀土杂质的回收率在６７％～１３３％之间；相对标准偏差 ５．１％～２３．２％；分离周期 １０～１３ ｈ。2-ethylhexanoate-2-ethylhexyl phosphonate extraction chromatography was used to separate l4 rare earth impurities from ultra-pure Tm2O3, Yb2O3 and Lu2O3 and then the impurities were determined by atomic emission spectrometry. The recovery for each element is 72% -128%. The relative standard deviation of the determination is 5. 1%-23. 2. This method can be applied to the determination of trace amounts of rare earth impurities in 99. 9999 %-99. 99999 % Tm2O3,Yb2O3 and Lu2O3.

关 键 词：萃取色谱 氧化铥 氧化镱 氧化镥 稀土杂质 

分 类 号：O614.33[理学—无机化学]