摘要
研究了ICP-AES法测定高纯氧化镧中十四种稀土杂质的方法。利用简单的加热去溶装置成功地测定了99.99％La_2O_3中14种稀土杂质。10mg/ml La_2O_3基体工作曲线下限为(以氧化物百分含量计算)Ce、Pr、Sm_2×10^(-3);Gd、Tb1×10^(-3);Nd,Lu 8×10^(-4),Er,Ho,Dy4×10^(-4); Tm.Eu 2×10^(-4),Yb 8×10^(-5),Y_4×^(-5)。相对标准偏差为2.8—9.7,回收率为85—114％。
A method for the determination of 14 rate earth elements in high-purity lanthanum oxide has been developed. The removal of solvent by heating is also studied. The detection limit of working curves are 0.002％ for Ce, Pr and Sm, 0.001％ for Gd and Tb, 0.0008％ for Nd and Lu, 0.0004％ for Er, Ho and Dy. 0.0002％ for Tm and Eu,0.00008％ for Y, 0,00004％ for Yb in 10mg/ml lanthanum oxide (counted by oxide). RSD is 2.8 to 9.7％, and rate of recovery 85—114％. This method is simple,rapid, sensitive and accurate. It has been applied to the determination of 14 rare earth impurities in 99.99％ lanthan(?)m oxide with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1989年第1期61-64,共4页
Chinese Journal of Analytical Chemistry
