Thermodynamics of the PuO2+-Na+-OH--Cl--ClO4--H2O system: use of NpO2+ Pitzer parameters for PuO2+
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Dhanpat Rai
Obtaining reliable thermodynamic data for Pu(V) is difficult because of its redox and/or disproportionation reactions in most aqueous systems. The known stability of Pu(V) in PuO2(am) suspensions in slightly acidic to near neutral conditions was used to study the solubility of PuO2(am) in 0.4 and 4.0 M NaCl or NaClO4 solutions ranging in pcH+ values from 4 to 9 as a function of time. The close agreement between the observed solubility and the predicted solubility using Pitzer ion-interaction parameters of Np(V) with Cl- or ClO4- for Pu(V) indicates that Pu(V), as expected, behaves in an analogous fashion to Np(V) and confirms the value of using Np(V) data to model Pu(V) behavior.
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Artikel in diesem Heft
- Determination of cumulative yields of fission products from 238U by 5.0 MeV neutrons
- Plutonium(IV) peroxide formation in nitric medium and kinetics Pu(VI) reduction by hydrogen peroxide
- Thermodynamics of the PuO2+-Na+-OH--Cl--ClO4--H2O system: use of NpO2+ Pitzer parameters for PuO2+
- Interaction of aerobic soil bacteria with plutonium(VI)
- Complexation behaviour of neptunium with humic acid
- Uranyl(VI) carbonate complex formation: Validation of the Ca2UO2(CO3)3(aq.) species
- The migration of radionuclides 237Np, 238Pu and 241Am in a weak loess aquifer: A field column experiment
- Technetium(VII) transport across supported liquid membranes (SLMs) containing 2-nitrophenyl octyl ether (NPOE)
- Radiotracer study of the electrophoretic behavior of Eu and its complexes with humic acid
- Electroosmotic effects in the determination of ion mobilities of carrier-free radionuclides in free aqueous electrolyte solutions
