摘要
提出了在表面活性剂存在下 ,2 ,6-吡啶 -二羧酸 (DPA)体系荧光分光光度法测定痕量铕 ,研究了最佳反应条件 ,铕的检出限可达 0 0 4 5ng/mL ,可允许存在一定量的其他共存稀土离子 ,并考察了Al3+,Fe3+,Ca2 +,Mg2 +离子对测定的影响 ,该法用于测定包头混合稀土氧化物中痕量铕 ,获得了较满意的结果。
The optimum conditions for the fluorescence spectrophtotometric determination of europium with 2,6-pyridine dicarboxylic acid in the precence of CTMAB and the effect of coexisting ions, especially Al 3+ , Fe 3+ , Ca 2+ , Mg 2+ have been investigated. The detection limit of Eu 3+ is 0.045ng/mL. The proposed method provides a direct and rapid analytical procedure for the determination of trace europium in a natural mixture of rare earth oxides. The results of sample obtained are in good agreement with recommended values.
出处
《冶金分析》
CAS
CSCD
北大核心
2000年第4期27-29,共3页
Metallurgical Analysis
基金
国家自然科学基金!资助项目 (2 9562 0 0 5)
关键词
铕
溴化十六烷基三甲基铵
荧光分光光度法
测定
Europium
2
6-Pyridine dicarboxylic acid
Cetyltrimethylammonium bromide
Fluorescence spectrophotometry
