摘要
用５７０９萃淋树脂还原色层法分离富集高纯氧化铕中微量稀土杂质，随后用顺序扫描等离子体光电光谱法测定。色层分离的条件：上柱稀土基体的质量浓度为２０ｇ／Ｌ，ｐＨ２～３，流速为２５ｍＬ／ｍｉｎ，洗脱液为６ｍｏｌ／Ｌ的ＨＣｌ溶液。共测定铈、镨、钕、钐、钆和镝６种稀土杂质。回收率为８９％～１０５％，相对标准偏差≤４％。
A reduction extraction chromatographic method for separating rare earth impurities from high purity Eu 2O 3 was developed by using HCl as eluate and 5709 leverxtrel resin as stationary phase. At pH 2～3, the matrix mass concentration of 20 g/L Eu 2O 3 was loaded onto the column and eluted with 6 mol/L HCl at flow rate of 2.5 mL/min. The impurities of Ce, Pr, Nd, Sm, Gd and Dy in the eluate were then determined by sequential ICP AES. The recoveries of standard addition for different impurities were in a range of 89%～105% with precision of better than 4% RSD. The method is suitable for the determination of REE impurities in fluorescence grade europium oxides.
出处
《岩矿测试》
CSCD
北大核心
1996年第3期203-206,共4页
Rock and Mineral Analysis
基金
国家计委下达的重点工业试验项目---稀土试验基地建设经费
关键词
铕
稀土元素
光谱法
异烷基磷酸
酯萃淋树脂
rare earth
europium oxide
chromatographic separation
inductively coupled plasma atomic emission spectrometry(ICP AES)
2 ethyl hexyl phosphonic acid 2 methyl heptyl ester(5709 leverxtrel resin)
