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      Radionuclides in the environment in the south of Spain, anthropogenic enhancements due to industry

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          Abstract

          Levels of natural radionuclides in the environment are affected by human activities in the South of Spain. Industry wastes, such as phosphogypsum, have been released to an estuary since sixties until 1997. Nowadays the wastes management is careful with environment protection, which can be clearly observed today in the radionuclides pattern. Different sources of radionuclides (industry wastes, tidal action and mining) can be distinguished in the estuary. Uranium isotopes, 226Ra, 210Pb and 210Po were determined in water and sediment samples for this study. An iron recycling factory is working close to Seville (South of Spain). A 137Cs source was accidentally burnt in a furnace of this factory in 2001. The environmental impact of this accident was immediately determined. Monitoring procedure and results are shown in this contribution. Radionuclides measurement involves difficult techniques. In this communication a procedure to determine the activity concentration of 210Pb by liquid scintillation counting is presented. Two quality tests, using gamma- and alpha-spectrometry were applied to the 210Pb results.

          Translated abstract

          Los niveles naturales de isótopos radioactivos en el ambiente son afectados por actividades humanas en el sur de España. Desechos industriales, tales como phosphogypsum, han sido depositados en un estuario desde los años sesenta hasta 1997. Actualmente el manejo de los desechos se realiza de manera a protejer el ambiente, lo que se observa claramente en la evolución de los patrones de los isótopos radioactivos. Las diferentes fuentes de radioisótopos (desechos industriales, mareas y minería) pueden distinguirse en el estuario. Isótopos de Uranio, 226Ra, 210Pb y 210Po se midieron en muestras de agua y sedimento para este estudio. Una fábrica de reciclado de acero funciona cerca de Sevilla (Sur de España). Una fuente de 137Cs fue accidentalmente quemada en uno de sus hornos en 2001. El impacto ambiental de este accidente fue inmediato. En este trabajo se presentan los procedimientos para el monitoreo así como los resultados obtenidos. La medida de radioisótopos involucra técnicas complejas. Aquí presentamos el procedimiento para determinar la concentración de210Pb por medio de conteo en centelleadores líquidos. Dos controles de calidad, espectrometría alfa y gama, confirman los resultados.

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          Most cited references16

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          Science of the Total Environment

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            Continental Shelf Research

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              Estuarine

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                Author and article information

                Contributors
                Role: ND
                Journal
                rmf
                Revista mexicana de física
                Rev. mex. fis.
                Sociedad Mexicana de Física (México )
                0035-001X
                February 2007
                : 53
                : suppl 3
                : 97-101
                Affiliations
                [1 ] Universidad de Sevilla Spain
                Article
                S0035-001X2007000900022
                81dfe961-eacd-4c76-8601-a441e57a6e68

                http://creativecommons.org/licenses/by/4.0/

                History
                Categories
                Physics, Multidisciplinary

                General physics
                Radioactivity,environment,phosphogypsum,norm,Radioactividad,ambiental,contaminación,España
                General physics
                Radioactivity, environment, phosphogypsum, norm, Radioactividad, ambiental, contaminación, España

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