摘要
本工作用火花源质谱法研究了高纯稀土氧化物(Y_2O_3、Eu_2O_3、Tb_4O_7)中痕量稀土杂质的定量分析方法,检测下限为O.06～0.6ppm。本研究还用理论相对灵敏度因子计算了稀土杂质的含量,结果与由实验相对灵敏度因子求得值基本吻合。
This work is the determination of trace rare-earth elements in high-purity yttrium oxide, europium oxide, and terbium oxide by spark source mass spectrometry (SSMS). Relative sensitivity factors (RSF Pd=1.0) are determined by using SPEX MIX—1031.
The commercial high-purity Y_2O_3 (99.99%), Eu_2O_3 (99.95%) and Tb_4O_7 (99.9%) mixed in an equal amount of graphite powder, and then pressed into electrodes as the sample materials.
The limits of detection are 0. 07ppm for La, Tb; 0.1ppm for Ce, Eu, Ho, Tin, Lu; 0.06 ppm for Pr; 0.4 ppm for Nd, Sin, Dy, Yb; 0.6 ppm for Gd; 0.3 ppm for Er. The results obtained by this method are better than those obtained by inductively coupled plasma-atomic emission spectroscopy (IC-AES). This study shows that the theoretical content of each care-earth impurities conform to the experimental one, so without the standard sample the quantitative anlysisof rare-earth clement is possible.
出处
《质谱学报》
EI
CAS
CSCD
1991年第1期79-85,共7页
Journal of Chinese Mass Spectrometry Society
