Browsing by Author "Kim, J. I."
Now showing items 1-5 of 5
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Article
The Chemistry of Pu in Concentrated Aqueous NaCl Solution: Effects of Alpha Self-Radiolysis and the Interaction between Hypochlorite and Dioxoplutonium(VI) [1]
Pashalidis, Ioannis; Lierse, C.; Sullivan, J. C.; Kim, J. I. (1992)The reactions between dioxoplutonium(VI) and hypochlorite in aqueous solution produce the species Pu02(0H)(C10) and Pu02(C10)2. The results of spectrophotometric observations are presented and the data used to calculate ...
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Article
Solid-Liquid Phase Equilibria of Pu(VI) and U(VI) in Aqueous Carbonate Systems. Determination of Stability Constants
Pashalidis, Ioannis; Czerwinski, K. R.; Fanghänel, Th; Kim, J. I. (1997)The carbonate complexation constants of hexavalent plutonyl and uranyl ions are determined by solubility study of PuO2CO3(s) and UO2CO3(s) under 100% and 1% CO2 atmosphere for Pu(VI) and 100% CO2 atmosphere for U(VI). pH ...
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Article
Spectroscopic investigation on the formation of hypochlorite by alpha radiolysis in concentrated NaCl solutions
Kelm, M.; Pashalidis, Ioannis; Kim, J. I. (1999)The hypochlorite formation induced by alpha radiation in saline solutions is studied by UV/VIS spectroscopy. Experiments are carried out in NaCl solutions of various concentrations between 1 and 5 mol/l and with volume ...
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Article
Spectroscopic Study of the Hydrolysis of PuO22+ in Aqueous Solution
Pashalidis, Ioannis; Kim, J. I.; Ashida, T.; Grenthe, I. (1995)The hydrolysis of Pu(VI) is investigated under Ar atmosphere in the pH range between 4.5 and 9.0 at 22°C in 0.1 M NaC104 solution in contact with an initial solid phase, PuO2CO3(s). Under the given conditions, PuO2CO3(s) ...
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Article
A Study of Solid-Liquid Phase Equilibria of Pu(VI) and U(VI) in Aqueous Carbonate Systems
Pashalidis, Ioannis; Runde, W.; Kim, J. I. (1993)Solubility products of PuO2CO3(s) and UO2CO3(s) are determined in 0.1 M NaC1O4 at 22 1 C under 100%, 1 % and 0.03% CO2. The carbonate precipitates of Pu(VI) and U(VI), prepared under 100% CO2 at neutral pH, are characterized ...