电感耦合等离子体原子发射光谱测定混合稀土铜合金中稀土和非稀土元素

Determination of Rare Earth and Non-rare Earth Elements in a Copper Alloy With Mixed Rare Earth by Inductively Coupled Plasma-Atomic Emission Spectrometry

本文提出了用电感耦合等离子体原子发射光谱(ICP—AES)法直接测定混合稀土铜合金中13个非稀土和稀土元素。选用了合适的分析线对及ICP光源的工作参数。探讨了观察高度、功率、酸度、载气和基体量的变化对被测元素谱线强度的影响。不用化学分离,可一次同时测定La、Ce、pr、Nd、Sm、Sn、Zn、Fe、Al、Ni、Pb,Mg和Mn。测定范围(％):La_2O_3:0.096～6.4;CeO_2:0.24～16;Pr_6O_(11):0.0384～2.56;Nd_2O_3:0.096～6.4;Sn:0.096～3.2;Mg、Mn、Fe,Sm_2O_3:0.024～1.6;Zn:0.396～6.7;Pb:0.092～6.4;Ni:0.096～3.2;Al:0.0384～1.28。相对标准偏差±3.0～9.1％;回收率85～116％满足冶炼上的要求,得到了满意的结果。

A method has been developed for direct determination of rare carths (La, Ce, Pr, Nd, Sm) and non-rare carth elements (Sn, Zn, Al, Ni, Pb, Mg, Fe, Mn) in a lare earth-copper alloy by using inductively coupled plasma-atomic emission spectrometry without preliminary separation. This method is simple and rapid with good reproducibility and high accuracy.