Assessment of naturally occurring radionuclides around England and Wales: Application of the G-BASE dataset to estimate doses to non-human species
| Autor: | Neil Breward, Nicholas A. Beresford, C. Scheib, Catherine L. Barnett, Michael Wood, David Copplestone, David G. Jones, A.C. MacKenzie, James D. Appleton |
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| Rok vydání: | 2009 |
| Předmět: |
Hydrology
Radionuclide Renewable Energy Sustainability and the Environment Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Sampling (statistics) Biota Environmental media Ecology and Environment Toxicology Nuclear Energy and Engineering Internal dose Soil water Environmental science Environmental impact assessment Safety Risk Reliability and Quality Dose rate Waste Management and Disposal |
| Zdroj: | Radioprotection. 44:629-634 |
| ISSN: | 1769-700X 0033-8451 |
| DOI: | 10.1051/radiopro/20095116 |
| Popis: | An assessment of the natural radiation dose to wildlife in England and Wales was made to determine the contribution it may make to the total radiation dose estimated during environmental impact assessments. Significant use was made of systematic datasets for environmental media (stream sediments, stream waters and soils), in particular those produced by the Geochemical Baseline Survey of the Environment (G-BASE) project. This provided extensive, although variable, coverage for different elements and sample types after normalisation of data to account for changes in sampling and analysis over time. Almost complete coverage for K in stream sediments was achieved by merging G-BASE andWolfson Atlas data. This required normalisation of theWolfson data to the G-BASE results. Coverage was improved greatly for U and Th in sediments, and K, U and Th in soils, by using the strong relationship between soils and sediments and geology (both solid and superficial) to extrapolate the data. The total U, Th and K data were used to derive activity concentrations of 238U and 232Th series radionuclides and 40K. External dose rates to wildlife were then estimated from derived media concentrations; internal dose rates were estimated from measured activities in biota or activities predicted using recommended concentration ratios. |
| Databáze: | OpenAIRE |
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