Concentration and distribution patterns of naturally occurring radionuclides in sediments and flood plain soils of the catchment area of the river Elbe |
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| Affiliation: | 1. Simons Initiative for the Developing Brain, University of Edinburgh, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, UK;2. Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU, UK;3. Division of Psychiatry, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, EH10 5HF, UK;4. Patrick Wild Centre, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, EH10 5HF, UK;1. Stanford University, Resources for the Future, and NBER, USA;2. National School of Development, Peking University, China;3. Yale University, USA;4. Resources for the Future, USA;5. Sichuan University, China;1. General Directorate of RDI National Planning, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh, 11442, Saudi Arabia;2. Department of Physics, College of Educational Science, University of Garmian, 46021, Kalar, Kurdistan Region, Iraq;3. Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia;4. Basic and Applied Scientific Research Center, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia;5. Nuclear and Radiological Control Unit, Nuclear Sciences Research Institute, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh, 11442, Saudi Arabia;1. EDF-LNHE, 6 Quai Watier, 78400 Chatou, France;2. LHSV -Laboratoire Hydraulique St Venant-, 6 Quai Watier, 78400 Chatou, France;3. INRAE, UR RiverLy, centre de Lyon-Grenoble, 5 Rue de la Doua, CS 20244, 69625 Villeurbanne Cedex, France;4. IGE -Université Grenoble Alpes, CNRS, IRD, Grenoble INP (Institute of Engineering Univ.Grenoble Alpes)-, 38000 Grenoble, France |
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| Abstract: | The impact of uranium mining and milling as well as that of traditional mining activities on river sediments and flood plain soils in the catchment area of the river Elbe was investigated over the years 1994 to 1995. Contamination resulting from mining activities has been identified by comparing the median values for the measured radionuclides, and by establishing the ratio between Ra-226 and Ra-228. The transport and deposition of contaminated materials as a result of high water events, and river discharge of waste water from mining and milling facilities, can be considered to be the main paths of sediment and soil contamination. Sediments and flood plain soils located in the vicinity of former uranium mining and milling sites are primarily influenced by discharges of waste water. Long distance transport and deposition at dams, barrages and on flood plains has mainly been caused by high water events. In many cases the radionuclide concentrations were higher in the subsurface layer than in the top layer of flood plain soil. Due to termination of uranium mining and milling activities, no significant contamination of newer or fresh sediments was found. Radiation exposure arising in relation to angling or walking on flood plains is low. |
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