Cation-cation complexes of PuO2+ and NpO2+ with Th4+ and UO22+
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N. J. Stoyer
Cation-cation complexes of NpO2+ and PuO2+ with UO22+ and Th4+ were studied using laser-induced photoacoustic spectroscopy (LIPAS). An equilibrium constant of 2.4±0.2 M-1 was measured at an ionic strength of 6.0 M for the NpO2+ · UO22+ complex which is in good agreement with previous measurements using conventional absorption spectroscopy and Raman spectroscopy. Equilibrium constants of 1.8±0.9 and 2.2±1.5 M-1 were measured for NpO2+ · Th4+ and PuO2+ · UO22+ complexes at an ionic strength of 6.0 M, respectively. This is the first time that LIPAS has been used to study cation-cation complexes and the first time that the PuO2+ · UO22+ cation-cation complex has been reported.
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Artikel in diesem Heft
- Investigation of 50Cr(d,n)51Mn and natCr(p,x)51Mn processes with respect to the production of the positron emitter 51Mn
- Fluoride complexation of rutherfordium (Rf, element 104)
- Continuous on-line chromatography of short lived isotopes of tungsten as homolog of seaborgium (element 106)
- Cation-cation complexes of PuO2+ and NpO2+ with Th4+ and UO22+
- The influence of dibutylphosphate on actinide extraction by 30% tributylphosphate
- Synthesis and spectroscopic properties of neptunium VI and plutonium VI oxoanion compounds
- Thermodynamic model for the solubility of thorium dioxide in the Na+-Cl--OH--H2O system at 23°C and 90°C
- Uranium and thorium isotopes in some red sea sediments
