Characterization of the nitrate complexes of Pu(IV) using absorption spectroscopy, 15N NMR, and EXAFS
作者： D. Kirk Veirs , Coleman A. Smith , John M. Berg , Bill D. Zwick , S. Frederic Marsh
DOI: 10.1016/0925-8388(94)90924-5
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摘要: The nitrate complexes of Pu (IV) are studied in solutions containing nitrate at concentrations up to 13 molar (M) using absorption spectroscopy, 15 N nuclear magnetic resonance (NMR), and extended X-ray absorption fine structure (EXAFS). Four major nitrato complexes are observed and identified as Pu (NO 3) 3+, Pu (NO 3) 2 2+, Pu (NO 3) 4, and Pu (NO 3) 6 2−. The Pu (NO 3) 3 1+ and Pu (NO 3) 5 1− complexes are not observed here and an upper limit of 0.10 can be set on the fraction for each of these species.
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