Fluorescence determination of europium with pyridine-2,4,6-tricarboxylic acid

被引：0
|
作者：
Zhao, J [1 ]
Zhao, GH [1 ]
Liang, HG [1 ]
Zhang, HB [1 ]
机构：
[1] Gansu Agr Univ, Coll Sci, Lanzhou 730070, Peoples R China
来源：
RARE METALS | 2005年 / 24卷 / 02期
关键词：
fluorescent determination; europium; pyridine-2,4,6-tricarboxylic acid; luminescence;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Europium can form a stable chelate with pyridine-2,4,6-tricarboxylic acid (PTA) with a ratio of 1:1 in aqueous. The system, having the maximum excitation and emission wavelengths at 311.0 nm and 616.3 nm, separately, shows a constant fluorescence intensity in the pH range of 11.0-12.0. The method has high selectivity and sensitivity as well as low effect from foreign ions. The optimum determinate conditions were obtained. The fluorescence intensity is a linear function of Eu3+, concentration in the range of 0.0029-1.5200 mu g center dot mL(-1) and the limit of detection is 2.90 ng center dot mL(-1).
引用
收藏
页码：115 / 118
页数：4
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