化学光谱法测定6N氧化铕中14个稀土杂质元素

Chemical Preconcentration Spectrographic Determination of 14 Rare Earth Impurities in 6N Hich Purity Europium Oxide

本文利用铕易被还原的特性，将铕还原为二价进行预分离后，继以Ｐ５０７萃淋树脂柱进行二次分离，光谱测定富集物中１４个稀土杂质元素。本方法富集倍数高达２０，０００倍，化学光谱测定下限为０．６５μｇ／ｇ（ＲＥ），可满足６Ｎ氧化铕产品分析的要求。

A Spectrographic method was developed for the determination of 14 rare earth impurities with two step separation.The sample was first passed through a zine reduction column and a P 507 colunm to remove more than 95% of the matrix.The concentrate was then passed through another P 507 column for quantitative separation of the matrix from rare earth impurities.The detection limit for total rare earth impurities was 0.65μg/g.The method has been used to estimate the purity of 6N europium oxide.