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.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1997年第4期377-381,共5页
Chinese Journal of Analytical Chemistry
关键词
萃取色谱
氧化铥
氧化镱
氧化镥
稀土杂质
Extraction chromatography
atomic emission spectrometry
thulium oxide
ytter- bium oxide
lutetium oxide
