The stabilities of the technetium polymers Tc2OCl104- and TcnOy4n-2y+ have been studied under light irradiation in 3 M chloride media with a pH range from 0 to 1.3...
Keywords: Technetium, Polymer, Photochemistry, Speciation
02/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagThe condensation mechanisms of tetravalent technetium in chloride media were
studied in the pH range 0–1.5...
Keywords: Technetium, Condensation, Polymer, Speciation, Solubility
05/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagA spectro-electrochemical cell was developed in order to study the speciation of radio-elements in thermodynamic unstable redox states using in situ XAS spectroscopy...
Keywords: Technetium, Rhenium, EXAFS, Speciation, Spectro-electrochemistry
05/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagThe radionuclide 99Tc is one of the fission products of spent nuclear fuel. The chemical forms of this element depend primarily on the pH and Eh of the environment...
Keywords: Sorption, Technetium, Bentonite, Glove box conditions, Deep repository
08/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagThe chemical shift of the X-ray absorption K-edge of Tc(IV) complexes determined by X-ray Absorption Spectroscopy (XAS) measurement was studied...
Keywords: Technetium, XAS, Polymer, Partial charge
09/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagThe sorption of technetium by powdered and polished mineral stibnite Sb2S3 has been investigated in simulated and natural underground waters from the Meuse/Haute–Marne region (France)...
Keywords: Technetium, Stibnite, Natural water, Sorption
09/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagRock analysis and study of groundwater data was combined with a short duration column experiment in order to better understand the behavior of rhenium (Re) in the site of Maqarin (Jordan)...
Keywords: Rhenium, Maqarin, Natural analogue, Migration, Technetium
09/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagTechnetium-99 is a β-emitting fission product of 238U. It is important when considering a safety case for nuclear waste disposal because of its high yield in radioactive waste and long half-life...
Keywords: Technetium, Reduction, Solubility, High pH
12/2007 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag