Time-resolved laser-induced fluorescence spectroscopy combined with parallel factor analysis: a robust speciation technique for UO2 2+

被引：15
|
作者：
Saito, Takumi [1 ]
Aoyagi, Noboru [2 ]
Kimura, Takaumi [2 ]
机构：
[1] Japan Atom Energy Agcy, Adv Sci Res Ctr, Nucl Sci Res Inst, Tokai, Ibaraki 3191195, Japan
[2] Japan Atom Energy Agcy, Nucl Sci & Engn Ctr, Nucl Sci Res Inst, Tokai, Ibaraki 3191195, Japan
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2015年 / 303卷 / 02期
关键词：
Uranyl; Complexation; Time-resolved laser-induced fluorescence spectroscopy; Factor analysis; Silicic acid; URANIUM SPECIATION; PARAFAC; TRLFS; ACID;
D O I：
10.1007/s10967-014-3465-7
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Time-resolved laser-induced fluorescence spectroscopy (TRLFS) is a powerful speciation technique for fluorescent metal ions and can be further improved by combining with multi-mode factor analysis such as parallel factor analysis (PARAFAC). This study demonstrates the applicability of TRLFS combined with PARAFAC for the speciation of uranyl (UO2 (2+)) in the presence of silicic acid (Si(OH)(4)). A series of TRLFS data with varied Si(OH)(4) concentration was processed by PARAFAC, resulting in three factors corresponding to free UO2 (2+), UO2SiO(OH) (3) (+) , and UO2OH+. The stability constant of UO2SiO(OH) (3) (+) was further optimized, based on the intensity profiles of the factors.
引用
收藏
页码：1129 / 1132
页数：4
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