Europium speciation by time-resolved laser-induced fluorescence

被引：100

作者：

Plancque, G ^{[1
]}

Moulin, V

Toulhoat, P

Moulin, C

机构：

[1] CEA Saclay, Serv Chim Phys & Analyt, Dept Chim Phys, Direct Energie Nucl, F-91191 Gif Sur Yvette, France

[2] UMR 8587, Evry, Val Essonne, France

[3] CEA Saclay, DEN, DDIN, F-91191 Gif Sur Yvette, France

来源：

ANALYTICA CHIMICA ACTA | 2003年 / 478卷 / 01期

关键词：

laser-induced fluorescence; europium; speciation; hydroxide; carbonate; humic substances; LUMINESCENCE EXCITATION SPECTROSCOPY; ION PROBE SPECTROSCOPY; FULVIC-ACIDS; COMPLEXATION; BINDING; EU(III); CM(III); SITES; EU;

D O I：

10.1016/S0003-2670(02)01486-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Time-resolved laser-induced fluorescence has been used to investigate Eu complexes formed with a few main ligands encountered in natural waters: hydroxide, carbonate and humic substances. By varying pH and concentrations of ligands at fixed europium concentration and ionic strength, it was possible, together with free europium EU(3+), to identify spectrally and temporally carbonate complexes, namely Eu(CO(3))(+), Eu(CO(3))(2)(-) and Eu(CO(3))(3)(3-) and humate complexes EuHA. For hydroxide complexes, no differences were found in terms of fluorescence spectra and lifetimes. A spectral interpretation is described by using deconvolution for all systems. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：11 / 22

页数：12

共 37 条

[1] EUROPIUM(III) LUMINESCENCE EXCITATION SPECTROSCOPY - QUANTITATIVE CORRELATION BETWEEN THE TOTAL CHARGE ON THE LIGANDS AND THE 7F0-]-5D0 TRANSITION FREQUENCY IN EUROPIUM(III) COMPLEXES [J].