Article
Sedimentary speciation of U and Th isotopes in a marsh area at the southwest of Spain
Author/s | Martínez Aguirre, Aránzazu
Periáñez Rodríguez, Raúl |
Department | Universidad de Sevilla. Departamento de Física Aplicada I |
Publication Date | 2001 |
Deposit Date | 2022-04-12 |
Published in |
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Abstract | A study of the distribution of U and Th-isotopes in different fractions of intertidal sediments collected in a marsh area has been carried out. This
marsh area is affected by the releases of natural radionuclides from ... A study of the distribution of U and Th-isotopes in different fractions of intertidal sediments collected in a marsh area has been carried out. This marsh area is affected by the releases of natural radionuclides from fertilizer industries carried out into the Odiel river. The study has shown that uranium is mainly located in non-residual fractions of the sediments and particularly coprecipitated with amorphous ferromanganese oxyhydroxides. In the case of Th isotopes, the contribution of residual fractions is higher than that of non-residual fractions, being the main non residual fraction again the amourphous ferromanganese oxyhydroxides. However, all fractions seems to reflect the same pattern of contamination. Thus, those sediments located along the Odiel river basin have the higher concentration in all sequentially extracted fractions. Some interesting activity and mass ratios have also been investigated. |
Citation | Martínez Aguirre, A. y Periáñez Rodríguez, R. (2001). Sedimentary speciation of U and Th isotopes in a marsh area at the southwest of Spain. Journal of Radioanalytical and Nuclear Chemistry, 247 (1), 45-52. |
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