钇离子对铕、铽、镝-萘啶酮酸体系的荧光增敏效应  

Fluorescence Sensitizing Effect of Yttrium Ion on Europium,Terbium and Dysprosium-Nalidixic Acid System

作　　者：贾祥琪[1] 李兰英[1] 黄汉国 

机构地区：[1]河北理工学院化工系,唐山063009

出　　处：《冶金分析》1997年第6期20-22,共3页Metallurgical Analysis

基　　金：河北省自然科学基金资助课题

摘　　要：发现在萘啶酮酸体系荧光法同时测定Eu^(3+),Tb^(3+),Dy^(3+)含量时,由于 Y^(3+)的存在能使这些离子的特征荧光显著增敏,检测限可分别达到0.2,0.02,0.01ng/ml,从而开发了 Y^(3+)-萘啶酮酸增敏体系同时测定 Eu^(3+),Tb^(3+),Dy^(3+)的荧光新体系。应用本法同时测定了混合稀土试样、荧光级氧化钇中的 Eu^(3+),Tb^(3+),Dy^(3+),取得满意的结果。This paper has been revealed that in fluorometric method for the determination of Eu^(3+),Tb^(3+)and Dy^(3+)with nalidixic acid in the presence of Y^(3+).The sensitivity of the characteristic fluorescence of the above ions is enhanced.A new nalidixic acid-Y^(3+)fluorometric sensitizing system,in which Eu^(3+),Tb^(3+)and Dy^(3+)can be determined has been devel- oped.The detection limit of Eu^(3+),Tb^(3+)and Dy^(3+)is 0.2,0.02,0.01ng/ml,respectively.These three ions in mixed rare earth oxides and yttrium oxides of fluorescence grade are determined with this method.The results were in good agreement with those obtained by other methods.

关 键 词：萘啶酮酸 钇 铕 铽 镝 荧光分析法 增敏 钇离子 

分 类 号：O614.3[理学—无机化学]