On-line speciation of uranyl chelates in supercritical CO2 by time-resolved laser-induced fluorescence spectroscopy

被引：17
作者：
Addleman, RS
Carrott, M
Wai, CM [1 ]
Carleson, TE
Wenclawiak, BW
机构：
[1] Univ Idaho, Dept Chem, Moscow, ID 83844 USA
[2] Univ Idaho, Dept Chem Engn, Moscow, ID 83844 USA
[3] Univ Siegen, Dept Chem, D-57068 Siegen, Germany
来源：
ANALYTICAL CHEMISTRY | 2001年 / 73卷 / 06期
关键词：
D O I：
10.1021/ac001039p
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The dynamic emission characteristics of selected uranyl complexes in supercritical (ScF) CO2 have been quantified with time-resolved laser-induced fluorescence (TRLIF). A variety of factors were found to affect the emission from uranyl complexes in ScF including ligand, adduct, pressure, and temperature. TRLIF was shown to allow on-line speciation and quantitative analysis of uranyl complexes with different primary ligands in ScF CO2. The method was applied to real-time analysis of multiligand uranium extractions from aqueous solutions with ScF CO2.
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页码：1112 / 1119
页数：8
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