同位素稀释火花源质谱法直接测定高纯氧化钆中的稀土杂质元素  

Direct Determination of Trace Rare Earth Elements in High-purity Gadolinium Oxide by Isotope Dilution-Spark Source Mass Spectrometry

作　　者：孟哲生 周文证 滕宗周 张悫 赵杰 

机构地区：[1]202厂理化检测中心,包头014035

出　　处：《分析化学》1995年第5期572-574,共3页Chinese Journal of Analytical Chemistry

摘　　要：本文采用同位素稀释火花源质谱法直接测定高纯氧化铁中 Nd、Sm、Eu、Dy、Ers个元素,再以该法测定的Nd和Er为内标,同时测定La、Ce,、Pr、Y和Tb、Ho、Tm、Lu 8个元素.方法的测定下限∑RE为8μg/g回收率为85%～114%.相对标准偏差为4%～21%.A method for the determination of trace Nd, Sm, Eu, Dy and Er in high-purity gadolinium oxide was developed by isotope dilution-spark source mass spectrometry. The trace elements, La, Ce, Pr, Y, Tb, Ho, Tm and Lu, are determined with respect to the internal standard Nd or Er determined by the method. The sum of the detection limits for 13 rare earth impurities is 8 μg/g. The recoveries are 85%-114%. The relative standard deviations are 4%-21%.

关 键 词：同位素稀释法 质谱 氧化钆 稀土杂质 

分 类 号：O614.33[理学—无机化学] O657.6[理学—化学]