期刊
TALANTA
卷 65, 期 4, 页码 1008-1014出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2004.08.034
关键词
valence determination; Np; XANES; EXAFS
X-ray absorption near edge structure (XANES) spectroscopy for in situ metal valence determination has become a powerful analytical tool in heterogeneous systems. This is in part because it is applicable without prior separation procedures. For some systems, however, determining the oxidation state from XANES spectra is not straightforward and caution must be used. We show that the analysis of L3,2 edge EXAFS (extended X-ray absorption fine structure) spectra is better suited to distinguish between Np(IV) and Np(V) than from their XANES spectra. Whereas evidence for the oxidation of Np(IV) in solution samples from their Np U XANES is unclear, their EXAFS data unequivocally reveals Np(V) formation in the solutions. (C) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据