作　　者： ; ;

机构地区： 广东工业大学

出　　处： 《理化检验（化学分册）》 1999年第8期348-349,352,共3页

摘　　要： 在0.6mol·L^(-1)的盐酸介质中,分别用252、273、220nm作为Ce^(3+)、Gd^(3+)、Tb^(3+)的激发波长,产生相应最佳发射波长为350、310和544nm.用盐酸体系测定混合样比用硫酸体系测定时.Gd^(3+)的检出限提高一倍,Gd^(3+)抗Ce^(3+)的干扰能力提高10倍.同时测定三种离子的回收率在95.3%～108.1%之间. The determination of Ce^(3+) , Gd^(3+) and TV^(3+) in rare earth oxides hy fluorometry is reported in this paper. The determination is carried out in a HC1 medium of 0. 6mol ?L^(-1). The excitation wavelengths for Ce^(3+), Gd^(3+) Tb^(3+) are 252nm, 273nm and 220nm respectively, and the optimum radiation wavelengths of 350nmi 310nm and 544nm are produced. The limit of detection for Gd^(3+) is raised about 100% in HC1 medium as compared with that in H_2SO_4 medium. And also the tolerance of co-existing cerium is raised to about 10 times. The recoveries for the alove mentioned elements are between 95. 3%^-108.1%.

关 键 词： 荧光光度法 铈 钆 铽 测定 稀土氧化物

领　　域： [理学] [理学] [理学] [理学]