Application of the alpha spectrometry for the study of core sediment extracted in the San Marcos dam in Chihuahua
The determination of the specific activities of210Po and isotopic uranium by alpha spectrometry was performed in a sediment core from SanMarcos Dam.The objective of this work was to analyze the vertical distribution of isotopic uranium and210Po and the behavior of these radionuclidesalong sediment c...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/99735 |
| Acceso en línea: | https://hdl.handle.net/11441/99735 |
| Access Level: | acceso abierto |
| Palabra clave: | Espectrometría alfa Uranio Polonio Núcleo de sedimento |
| Sumario: | The determination of the specific activities of210Po and isotopic uranium by alpha spectrometry was performed in a sediment core from SanMarcos Dam.The objective of this work was to analyze the vertical distribution of isotopic uranium and210Po and the behavior of these radionuclidesalong sediment core collected from the San Marcos Dam. Sample was divided into 11 sections, in which210Po and Isotopic Uranium weredetermined using liquid-liquid extraction with tributyl phosphate (TBP). Furthermore, it was made a comparison between the TBP techniqueand the technique of extraction chromatography using UTEVA resins for uranium.The results of specific activities for210Po show a trend to decrease along the core, whereas the uranium isotopic does not show a pointedtrend. The results of isotopic ratios between the234U and238U show that they are close to secular equilibrium in each of the core sections.The comparison between the two uranium extraction techniques indicates that chemical yield is better using the UTEVA technique than TBPextraction. |
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