电感耦合等离子体发射光谱(ICP-OES)法测定稀土钢中微量镧、铈  

Determination of Trace Lanthanum and Cerium in Rare Earth Steel by Inductively Coupled Plasma Optical Emission Spectrometry

作　　者：郭宏杰[1] 李辉[1] 张庸 GUO Hongjie;LI Hui;ZHANG Yong(Institute of Metal Research,Chinese Academy of Science,Shenyang,Liaoning 110016,China)

机构地区：[1]中国科学院金属研究所,沈阳110016

出　　处：《中国无机分析化学》2021年第3期75-78,共4页Chinese Journal of Inorganic Analytical Chemistry

摘　　要：采用稀王水溶解样品,选择La 408.672 nm、Ce 456.236 nm为分析线,建立了电感耦合等离子体发射光谱(ICP-OES)法测定稀土钢中微量镧、铈的方法。结果表明,各元素校准曲线线性良好,相关系数可达0.99999;方法测定范围为0.0001%~0.10%。检出限为镧0.00002%,铈0.00006%。按照实验方法测定标准样品中镧、铈,结果的相对标准偏差RSD(n=8)为2.2%、1.7%,方法简单、快速、准确,适宜推广应用。The sample was dissolved in 3 ml hydrochloric acid and 1 ml nitric acid,and La 408.672 nm and Ce 456.236 nm were selected as the analytical lines.A method for the determination of trace lanthanum and cerium in rare earth steel by inductively coupled plasma optical emission spectrometry(ICP-OES)was established.The results show that the calibration curve of each element has good linearity,the correlation coefficient can reach 0.99999,and the determination range is 0.0001%—0.10%.The detection limit was 0.00002%for La and 0.00006%for Ce.The relative standard deviation(RSD)(n=8)of lanthanum and cerium in standard samples were 2.2%and 1.7%respectively.The method is simple,rapid and accurate,which is suitable for popularization and application.

关 键 词：电感耦合等离子体发射光谱法 稀土钢 镧 铈 

分 类 号：O657.31[理学—分析化学] TH744.11[理学—化学]