高纯稀土氧化物的火花源质谱定量分析

Analysis of Trace Elements in High Purity Rare Earth Oxide by Spark Source Mass Spectrometry

采用同位素稀释和相对灵敏度因子法相结合，定量分析了高纯稀土氧化物Ｔｍ２Ｏ３、Ｔｂ４Ｏ７和Ｅｕ２Ｏ３（纯度９９．９９９％～９９．９９９９％）中２５种痕量稀土杂质与非稀土杂质元素，测定下限为０．０Ｘ～０．００Ｘμｇ／ｇ，相对标准偏差在３０％以内，其中Ｃｕ、Ｚｎ、Ｂａ、Ｄｙ、Ｅｕ采用同位素稀释法分析，相对标准偏差均在１０％以内。

Quantitative analysis of 25 trace elements in high purity Eu2O3,Tb4O7 and Tm2O3samples by isotope dilution spark source mass spectrometry are described. The detection limit of the method is 0. 0X￣0. 00Xμg/g,relative standard derivation is 5%￣30%.