铽-钆-均苯四甲酸体系的共发光效应及其分析应用  

Columinescence Effect of Terbium-Gadolinium-Pyromellitic Acid System and Its Analytical Application

作　　者：马文元[1] 杨景和[1] 葛红梅[1] 

机构地区：[1]山东大学化学系,济南250100

出　　处：《分析化学》1995年第2期183-186,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金资助项目

摘　　要：本文提出了以均苯四甲酸为配体的铽的荧光测定法。试验表明:在PH=6.0～9.0的缓冲溶液中,轧离子能明显增强Tb～(3+)-均苯四甲酸二元体系的荧光强度。该体系已用于痕量铽的测定,其检出限为4×10～(-9)mol/L。The fluorimetric determination of terbium using pyromellitic acid as the ligand is put forward. The experimental result showed that gadolinium ion could distinctly enhance the fluorescence intensity of the Tb-pyromellitic acid binary system in the buffer solution at pH 6. 0-9. 0. This system has been applied to the determination of trace terbium. The detection limit of terbium was 4*10-9 mol/L.

关 键 词：铽 钆 苯四甲酸 发光效应 荧光测定 稀土 

分 类 号：O614.341[理学—无机化学] O657.31[理学—化学]