电感耦合等离子体发射光谱法测定氧化钐中非稀土杂质铜、铁、钙和镍

DETERMINATION OF NONRARE EARTH IMPURITIES INCLUDING Cu,Fe,Ca and Ni IN SAMARIUM OXIDE BY ICPAES

本文提出了用ＩＣＰ－ＡＥＳ法直接测定高纯氧化钐中痕量杂质铜、铁、钙和镍的方法。用正交实验法研究了影响测定的主要因素，选择了铜、铁、钙和镍同时测定的折衷条件。讨论了基体浓度的影响。

The direct determination of nonrare earth trace impurities including Cu,Fe,Ca and Ni in high purity Samarium oxide by means of ICPAES is presented in this paper.By using orthogonality experimentation,we studied main factors of influential determination and selected compromise condition of simultaneous determination of Cu,Fe,Ca and Ni.Influence of matrix concentration was discussed.We used the method of matrix match and subtraction background.For the sample solution containing 5mg/mL of Sm2O3 the determination limits were 00003% for Cu,0003% for Ni,0001% for Ca and Fe,respectively.The relative standard deviation was in the range of 26—92%.The recovery ratio of these elements was in the range of 90—110%.The method is simple and rapid.It was fit to productive control analysis and determination of production.