摘要
本文提出了用ICP-AES直接同时测定高纯氧化铕中14个稀土和20个非稀土杂质元素的分析方法。着重考察了铕基体对分析元素的基体效应,谱线干扰及背景影响等情况,同时对仪器的工作条件进行了优化。在标准溶液中改变了以往对高纯物质进行分析时常常忽略基准物质中的含量,而用标准加入法测出氧化铕基准中的各稀土微量杂质元素的含量作为低标值,有效的消除了由于忽略基准中的杂质元素的含量给分析测定带来的误差。在本工作所选定的条件下,各稀土元素、非稀土元素的回收率在90％-112％之间,稀土元素的精密度实验显示相对标准偏差为1.12％-9.5％。对不同稀土分离厂家的样品进行了检测,结果令人满意。
An analytical method for determining 14 rare earth impurity elements and 20 non-rare earth impurity elements directly by ICP-AES was put forward in this paper. The study was focused on matrix effects, spectrum interference and background of the spectral lines of other rare earth elements in europium oxide matrix, and the optimum condition was selected. Using standard addition method to determine the content of every trace impurity rare earth element in europium oxide standard substance as a standard value instead of the former method of neglecting these contents can eliminate the neglected errors. Under the selected conditions, the recovery of every rare earth and non-rare earth elements was between 90%-112%, and the relative standard deviation (RSD) was 1.12%-9.5%. The samples from different rare earth separation plants were inspected and the results were satisfactory.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2003年第5期972-975,共4页
Spectroscopy and Spectral Analysis
基金
江苏省自然科学基金项目(BK2001053)资助
