Time-resolved laser-induced fluorescence spectroscopy combined with parallel factor analysis; A Robust speciation technique for UO22+
Time-resolved laser-induced fluorescence spectroscopy combined with parallel factor analysis; A Robust speciation technique for UO22+
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时间分辨激光诱导荧光光谱结合平行因子分析；
DOI：
10.1007/s10967-014-3465-7
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发表时间：
2015
影响因子：
1.6
通讯作者：
Takaumi Kimura
中科院分区：
文献类型：
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作者：
Takumi Saito;Noboru Aoyagi;Takaumi Kimura
时间分辨激光诱导荧光光谱（TRLFS）是一种强大的荧光金属离子形态形成技术，可与平行因子分析（PARAFAC）等多模式因子分析相结合，进一步提高光谱分析的准确性。本研究证明了TRLFS联合PARAFAC在硅酸（Si(OH)4）存在下对铀酰（UO22+）形成的适用性。通过PARAFAC对一系列不同Si(OH)4浓度的TRLFS数据进行处理，得到游离UO22+、UO2SiO(OH)3+和UO2OH+三个因子。根据各影响因素的强度分布，进一步优化了UO2SiO(OH)3+的稳定性常数。
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 (UO22+) in the presence of silicic acid (Si(OH)4). A series of TRLFS data with varied Si(OH)4concentration was processed by PARAFAC, resulting in three factors corresponding to free UO22+, UO2SiO(OH)3+, and UO2OH+. The stability constant of UO2SiO(OH)3+was further optimized, based on the intensity profiles of the factors.