FLUORESCENCE ENHANCEMENT OF RARE-EARTHS BY YTTRIUM AND ITS APPLICATION

被引:2
作者
SI, ZK
ZHU, GY
HU, JT
ZHANG, B
JIANG, W
AI, WQ
机构
[1] Department of Chemistry, Shandong University, Jinan
关键词
EUROPIUM; DYSPROSIUM; YTTRIUM; FLUORESCENCE; ENHANCEMENT;
D O I
10.1080/00032719408000289
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A study of the enhancement effect on the fluorescence intensity of the Eu3+-thenoyltrifluoroacetone (TTA)-cetyltri-methylammonium bromide (CTMAB) and the Dy3+ pyrocatechol-3,5-disulphonic acid (Tiron) systems by Y3+ has been carried out. In the presence of yttrium the fluorescence intensity of the systems was enhanced by a factor of about 100 and 15, respectively. The fluorescence intensity was a linear function of the concentration of europium or dysprosium in the range 1.0 x 10-(10)-1.0 x 10(-8) mol dm(-3) and 8.0 x 10(-8)-9.0 x 10(-6) mol dm(-3), respectively. The detection limit was 1.0x 10(-11) mol dm(-3) and 1.0x 10(-10) mol dm(-3), respectively. The standard addition method was used for the determination of europium or dysprosium in rare earth oxides and gave satisfactory results. The mechanism of enhanced fluorescence was proposed.
引用
收藏
页码:1183 / 1191
页数:9
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