STUDY OF THE FLUORESCENCE ENHANCEMENT SYSTEM EUROPIUM-GADOLINIUM-THENOYLTRIFLUOROACETONE-CETYLTRIMETHYLAMMONIUM BROMIDE-TRITON X-100 AND ITS APPLICATION

被引：10

作者：

ZHU, GY

SI, ZK

PING, L

WEI, J

机构：

[1] Department of Applied Chemistry, Shandong University, Jinan

来源：

ANALYTICA CHIMICA ACTA | 1991年 / 247卷 / 01期

关键词：

FLUOROMETRY; EUROPIUM; MINERALS; RARE EARTH MINERALS;

D O I：

10.1016/S0003-2670(00)83049-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A fluorescence enhancement phenomenon on adding Gd3+ to the europium-thenoyltrifluoroacetone-cetytrimethylammonium bromide-Triton X-100 fluorescence system was observed and studied in detail. The fluorescence intensity of this system was 60 times greater than that of the system without gadolinium. The optimum conditions are a Gd3+ concentration of 2.0 x 10(-5) M and pH 7.5-8.5; the fluorescence intensity is a linear function of the concentration of europium in the range 6.0 x 10(-11)-1.0 x 10(-7) M and the detection limit is 2.0 x 10(-12) M europium. This system was used for the determination of trace amounts of europium in rare earth samples with satisfactory results.

引用

页码：37 / 43

页数：7

共 4 条

[1] FLUORESCENCE ENHANCEMENT OF THE EUROPIUM YTTRIUM DIPHACINONE AMMONIA SYSTEM [J].