【摘要】 发现在萘啶酮酸体系荧光法同时测定Eu³⁺,Tb³⁺,Dy³⁺含量时,由于 Y³⁺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 Y³⁺-萘啶酮酸增敏体系同时测定 Eu³⁺,Tb³⁺,Dy³⁺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 Eu³⁺,Tb³⁺,Dy³⁺,取得满意的结果。更多还原

【Abstract】 This paper has been revealed that in fluorometric method for the determination of Eu³⁺,Tb³⁺and Dy³⁺with nalidixic acid in the presence of Y³⁺.The sensitivity of the characteristic fluorescence of the above ions is enhanced.A new nalidixic acid-Y³⁺fluorometric sensitizing system,in which Eu³⁺,Tb³⁺and Dy³⁺can be determined has been devel- oped.The detection limit of Eu³⁺,Tb³⁺and Dy³⁺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.更多还原