Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/173251
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Comparison of solvent extraction and extraction chromatography resin techniques for uranium isotopic characterization in high-level radioactive waste and barrier materials |
Autor: | Hurtado-Bermúdez, Santiago; Villa-Alfageme, María; Mas, José Luis; Alba, María D. CSIC ORCID CVN | Fecha de publicación: | 2018 | Editor: | Elsevier | Citación: | Applied Radiation and Isotopes 137: 177- 183 (2018) | Resumen: | The development of Deep Geological Repositories (DGP) to the storage of high-level radioactive waste (HLRW) is mainly focused in systems of multiple barriers based on the use of clays, and particularly bentonites, as natural and engineered barriers in nuclear waste isolation due to their remarkable properties. Due to the fact that uranium is the major component of HLRW, it is required to go in depth in the analysis of the chemistry of the reaction of this element within bentonites. The determination of uranium under the conditions of HLRW, including the analysis of silicate matrices before and after the uranium-bentonite reaction, was investigated. The performances of a state-of-the-art and widespread radiochemical method based on chromatographic UTEVA resins, and a well-known and traditional method based on solvent extraction with tri-n-butyl phosphate (TBP), for the analysis of uranium and thorium isotopes in solid matrices with high concentrations of uranium were analysed in detail. In the development of this comparison, both radiochemical approaches have an overall excellent performance in order to analyse uranium concentration in HLRW samples. However, due to the high uranium concentration in the samples, the chromatographic resin is not able to avoid completely the uranium contamination in the thorium fraction. | URI: | http://hdl.handle.net/10261/173251 | DOI: | 10.1016/j.apradiso.2018.04.008 | Identificadores: | doi: 10.1016/j.apradiso.2018.04.008 issn: 1872-9800 |
Aparece en las colecciones: | (ICMS) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
ARI_S_Hurtado_revised.pdf | 288,16 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
26
checked on 10-abr-2024
WEB OF SCIENCETM
Citations
25
checked on 26-feb-2024
Page view(s)
261
checked on 23-abr-2024
Download(s)
434
checked on 23-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Este item está licenciado bajo una Licencia Creative Commons