dc.creator | Villa Alfageme, María | es |
dc.creator | Mosqueda, F. | es |
dc.creator | Hurtado Bermúdez, Santiago José | es |
dc.creator | Mantero Cabrera, Juan | es |
dc.creator | Manjón Collado, Guillermo | es |
dc.creator | Periáñez Rodríguez, Raúl | es |
dc.creator | Vaca, F. | es |
dc.creator | García-Tenorio García-Balmaseda, Rafael | es |
dc.date.accessioned | 2022-03-29T11:06:21Z | |
dc.date.available | 2022-03-29T11:06:21Z | |
dc.date.issued | 2009 | |
dc.identifier.citation | Villa Alfageme, M., Mosqueda, F., Hurtado Bermúdez, S.J., Mantero Cabrera, J., Manjón Collado, G., Periáñez Rodríguez, R.,...,García Tenorio, R. (2009). Contamination and restoration of an estuary affected by phosphogypsum releases. Science of the Total Environment, 408 (1), 69-77. | |
dc.identifier.issn | 0048-9697 | es |
dc.identifier.uri | https://hdl.handle.net/11441/131407 | |
dc.description.abstract | The Huelva Estuary in Huelva, Spain, has been one of the most studied environmental compartments in the
past years from the point of view of naturally occurring radioactive material (NORM) releases. It has been
historically affected by waste releases, enriched in radionuclides from the U-decay series, from factories
located in the area devoted to the production of phosphoric acid and phosphate fertilizers.
Nevertheless, changes in national regulations forced a new waste management practice in 1998, prohibiting
releases of phosphogypsum into the rivers. The input of natural radionuclides from phosphate factories to
rivers was drastically reduced. Because of this there was a unique opportunity for the study of the response
of a contaminated environmental compartment, specifically an estuary affected by tidal influences, after the
cessation of the contaminant releases to, in this case, the Huelva Estuary (henceforth referred to as the
Estuary).
To investigate the environmental response to this new discharge regime, the specific activities of
radionuclides 226Ra and 210Pb in water and sediment samples collected in four campaigns (from 1999 to
2005) were determined and compared with pre-1998 values.
From this study it is possible to infer the most effective mechanisms of decontamination for the Estuary.
Decontamination rates of 210Pb and 226Ra in the sediments and water have been calculated using exponential
fittings and corresponding half-lives have been deduced from them. The cleaning half-life in the whole area
of the Estuary is about 6 and 3.5 years for 226Ra and 210Pb respectively.
The observed trend clearly shows that contamination of the Estuary by natural radionuclides is now
decreasing and radioactive levels in waters and sediments are approaching the natural background
references. This work attempts to evaluate whether it can be expected that the decontamination of the
enhanced levels of natural radioactivity in the Estuary can be performed via natural processes | es |
dc.format | application/pdf | es |
dc.format.extent | 9 | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Science of the Total Environment, 408 (1), 69-77. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Estuary | es |
dc.subject | Phosphogypsum | es |
dc.subject | Desorption | es |
dc.subject | Time evolution | es |
dc.subject | Radium | es |
dc.subject | Lead | es |
dc.title | Contamination and restoration of an estuary affected by phosphogypsum releases | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Aplicada I | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Aplicada II | es |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0048969709008912?via%3Dihub | es |
dc.identifier.doi | 10.1016/j.scitotenv.2009.09.028 | es |
dc.journaltitle | Science of the Total Environment | es |
dc.publication.volumen | 408 | es |
dc.publication.issue | 1 | es |
dc.publication.initialPage | 69 | es |
dc.publication.endPage | 77 | es |
dc.identifier.sisius | 6682391 | es |