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Geochemical interactions of actinides in the environment.
From a chemist’s perspective, the environment is a complex, particularly elaborate system. Hundreds of chemically active compounds and minerals reside within the earth’s formations, and every patch…
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The aqueous geochemistry of neptunium: Dynamic control of soluble concentrations with applications to nuclear waste disposal
The valence state of neptunium, one of the most important radionuclides of concern for long-term emplacement of nuclear waste, primarily defines its geochemical reactions and migration behavior. We…
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Kinetic Study of the Oxidative Dissolution of UO2 in Aqueous Carbonate Media
The oxidative dissolution of uranium(IV) dioxide powder at room temperature in aqueous carbonate media has been investigated. Kinetic studies evaluating the efficacy of various oxidants, including…
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Spectroscopic characterization of trivalent f-element (Eu, Am) solid carbonates
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Solubility and sorption of redox-sensitive radionuclides (Np, Pu) in J-13 water from the Yucca Mountain site: comparison between experiment and theory
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Higher order speciation effects on plutonium L(3) X-ray absorption near edge spectra.
TLDR
This large database of X-ray near edge absorption spectra for Pu(0-VII) are reported, extending the known correlations between the energy and shape of these spectra from the usual association of the XANES with valence and site symmetry to higher order chemical effects.
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A Study of Solid-Liquid Phase Equilibria of Trivalent Lanthanide and Actinide Ions in Carbonate Systems
The solid-liquid phase equilibria of trivalent Nd, Eu and Am are investigated in carbonate systems of 0.1 M NaC104 under different C 0 2 partial pressures of 0.03%, 1.0% and 100%. The solid phase…
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225Ac and 223Ra production via 800 MeV proton irradiation of natural thorium targets.
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Neptunium and Plutonium Solubilities in a Yucca Mountain Groundwater
Solubilities of neptunium and plutonium were studied in J-13 groundwater (ionic strength of about 3.7 mmol; total dissolved carbonate of 2.8 mmol) from the proposed Yucca Mountain Nuclear Waste…
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Switchable phase behavior of [HBet][Tf2N]-H2O upon neodymium loading: implications for lanthanide separations.
TLDR
The change in the liquid-liquid equilibrium of [HBet][Tf(2]N]-H(2)O upon the addition of Nd(III) is investigated by cloud-point measurements, which led to the formation of single crystals of [Nd(2)(H( 2)O)(8)(μ(2)-Bet)(2)( μ(3)-Bet](2)][(Cl)(2)N)(4)] from the TSIL phase.
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