Published October 2007 | Version v1
Journal article Metadata-only

Estimating the stabilities of actinide aqueous species. Influence of sulfoxy-anions on uranium(IV) geochemistry and discussion of Pa(V) first hydrolysis

Creators

  • 1. CEA Saclay, Laboratoire de Speciation des Radionucleides et des Molecules (LSRM), DEN/DANS/DPC/SECR, 91 - Gif sur Yvette (France)
  • 2. CEA Saclay, UMR 8587, DEN/DANS/DPC/SECR, 91 - Gif sur Yvette (France)
  • 3. CEA Saclay, Laboratoire de Mesures et Modelisation de la Migration des Radionucleides (L3MR), DEN/DANS/DPC/SECR, 91 - Gif sur Yvette (France)
  • 4. CEA Marcoule, DEN/DRCP/SCPS, 30 (France)
  • 5. Universite Paul-Sabatier, Laboratoire de Physique Quantique, CNRS UMR 5626, 31 - Toulouse (France)
  • 6. Laboratoire d'Etude des Transferts en Hydrologie et Environnement (LTHE), UMR 5564, CNRS/INPG/IRD/UJF, 38 - Grenoble (France)

Description

Qualitative chemical information is used as a guideline for correlations between equilibrium constants or between equilibrium constants and atomic charges (deduced from quantum mechanics calculations). Pa(V) and Nb(V) hydrolysis constants are also recalculated from experimental data. logK01(AnI3V/RO2-2)=6.59 ± 0.55 (S2O32-), 10.06 ± 0.88 (SO32-), 11.97 ± 1.07 (CO32-), and 10.05 ± 0.88 (HPO42-) are estimated based on the trend of affinity for An cations in the series CO32- ≥ HPO42- ∼ SO32- ≥ SO42- ∼ S2O32-. These ideas and values are used to discuss U(IV) chemistry in S-containing ground-waters. (authors)

Availability note (English)

Available from doi: <http://dx.doi.org/10.1016/j.crci.2007.04.015

Additional details

Identifiers

DOI
10.1016/j.crci.2007.04.015;

Publishing Information

Journal Title
Comptes Rendus. Chimie
Journal Issue
no.10-11t.10
Journal Page Range
p. 978-993
ISSN
1631-0748

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
39020422
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Descriptors DEI
ACTINIDES; CARBONATES; GEOCHEMISTRY; GROUND WATER; HYDROLYSIS; RADIOACTIVE WASTE DISPOSAL; SULFATES; THIOSULFATES
Descriptors DEC
CARBON COMPOUNDS; CHEMICAL REACTIONS; CHEMISTRY; DECOMPOSITION; ELEMENTS; HYDROGEN COMPOUNDS; LYSIS; MANAGEMENT; METALS; OXYGEN COMPOUNDS; RADIOACTIVE WASTE MANAGEMENT; SOLVOLYSIS; SULFUR COMPOUNDS; WASTE DISPOSAL; WASTE MANAGEMENT; WATER

Optional Information

Notes
36 refs.