表面活性剂对铽—钛铁试剂体系纸上荧光的增敏作用及其应用

THE SENSITIZATION OF SURFACTANT ON THE FLUORESCENCE REACTION OF Tb^(3+)—TIRON SYSTEM USING FILTER PAPER AS THE SUBSTRATE AND ITS APPLICATION

探讨了九种表面活性剂对钛铁试剂体系纸上荧光法中Tb^(3+)特征荧光的增敏效应,并探讨了钛铁试剂一溴化十六烷基三甲胺体系纸上荧光法测定Tb^(3+)的最佳条件,Tb^(3+)的检测限达0.7ng。应用本方法成功地测定了中稀土分离富集物中Tb_4O_7含量。

The sensitization of different surfactants on the Tb^(3+)—Tironsystem fluorescence reaction using filter paper as the substrate was discussed. The result is different from that in solution, such as excitation wavelength andthe kinds of sensitizing surfactant. The optimal conditions to determinate Tb^(3+) with Tb^(3+)—Tiron—CTMAB system Were studied. The detection limit of Tb^(3+)is 0. 7ng. The content of Tb^(3+) in separated rich rare earth oxide was determined with satisfactory results.