2,6-吡啶-二羧酸—溴化十六烷基三甲基铵体系荧光分光光度法测定痕量铕  

Fluorescence Spectrophotometric Determination of Trace Europium in the Europium(Ⅲ)-2,6-Pyridine-dicardoxylic Acid-CTMAB System

作　　者：敖登高娃[1] 连锡山[1] 乌兰[2] 

机构地区：[1]内蒙古大学化学系,呼和浩特010021 [2]内蒙古大学方圆公司,包头014060

出　　处：《冶金分析》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)

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.

关 键 词：铕 溴化十六烷基三甲基铵 荧光分光光度法 测定 

分 类 号：O657.31[理学—分析化学]