摘要
本文研究了以三价铽(Tb^(3+))离子为发光体的Tb-TTA-phen 体系的共发光效应,其中钆离子(Gd^(3+))的增强倍数最大。表面活性剂和溶剂对Tb-Gd-TTA-Phen 体系共发光效应的形成有重要作用。试验表明非离子表面活性剂TritonX-100的增敏效果最强。该体系已用于痕量铽的测定,其检出限为1.0×10^(-9)mol/L,它比无钆存在时体系的检出限降低了3个数量级。本文认为该体系的分子间能量转移是通过电偶极共振方式进行的。
The columinescence effect of Tb-Gd-TTA-phen-TritonX-100 system with Tb^(3+) as lu-minescence substance is studied,the enhancement fold of Gd^(3+) is the largest.Surfactant andsolvent are important in forming the columinescence of the Tb-Gd-TTA-phen system.Theexperiment showed that nonionic surfactant Triton X-100 is the best to increase sensitivity.This system has been used for the determination of trace Tb^(3+),the detection limit is 1.0×10^(-9)mol/L,which is 3 orders of magnitude lower than that of the non Gd^(3+)system.In thispaper,we consider that the intermolecular energy triansfor is fulfilled by means of dipole res-onant fashion.
出处
《山东大学学报（自然科学版）》
CSCD
1992年第4期483-489,共7页
Journal of Shandong University(Natural Science Edition)
基金
国家自然科学基金
关键词
铽
钆
共发光效应
荧光光度法
TTA
terbium
gadolinium
columinescence effect
spectrofluorimetry
determination of Terbium
