作　　者： ;

机构地区： 山东医科大学药学院

出　　处： 《理化检验（化学分册）》 1999年第7期298-299,共2页

摘　　要： 发现了钆对镝-钛铁试剂荧光体系的协同发光效应,研究了镝-钆-钛铁试剂协同发光体系的荧光光谱特性,确定了试验条件对体系荧光强度的影响.在镝-钛铁试剂荧光体系中引入适量的钆,可使体系的荧光强度提高50倍,体系的荧光强度与镝浓度在1×10^(-8)～9×10^(-6)mol·L^(-1)内成线性关系,检出限为5×10^(-11)mol·L^(-1).用标准加入法测稀土样品中痕量镝可获得满意结果. It was found that gadolinium gives a co-luminescence effect to the dysprosium-tiron reaction system, and the characteristics of fluorescence spectrum of the system was studied in detail. The effect of the experimental conditions on the fluorescence intensity was defined. By adding suitable amount gadolinium to dysprosium-tiron system. the fluorescence intensity can be enhanced about 50 times. The fluorescence intensity is a linear function of the concentration of dysprosium in the range of l×0^(-8)~9×0^(-6)mol ·L^(-1). The detection limit is 5×10^(-11) mol ·L^(-1). Standard addition method is used for determination of dysprosium in synthetic rare earth sample with satisfactory results.

关 键 词： 镝 钆 钛铁试剂 荧光光度法 测定

领　　域： [理学] [理学]