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C-14 content in veg...
C-14 content in vegetation in the vicinities of Brazilian nuclear power reactors
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Melazo Dias, C (author)
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Ventura Santos, R (author)
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- Stenström, Kristina (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Gomes Nỉcoli, I (author)
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- Skog, Göran (author)
- Lund University,Lunds universitet,Kvartärgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Quaternary Sciences,Department of Geology,Faculty of Science
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da Silveira Corrêa, R (author)
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(creator_code:org_t)
- Elsevier BV, 2008
- 2008
- English.
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In: Journal of Environmental Radioactivity. - : Elsevier BV. - 1879-1700 .- 0265-931X. ; 99:7, s. 1095-1101
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Abstract in UndeterminedC-14 specific activities were measured in grass samples collected around Brazilian nuclear power reactors. The specific activity values varied between 227 and 299 Bq/kg C. Except for two samples which showed C-14 specific activities 22% above background values, half of the samples showed background specific activities, and the other half had a C-14 excess of 1-18%. The highest specific activities were found close to the nuclear power plants and along the main wind directions (NE and NNE). The activity values were found to decrease with increasing distance from the reactors. The unexpectedly high C-14 excess values found in two samples were related to the local topography, which favors C-14 accumulation and limits the dispersion of the plume. The results indicate a clear C-14 anthropogenic signal within 5 km around the nuclear power plants which is most prominent along northeastwards, the prevailing wind direction.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- carbon-14
- Pressurized Water Reactor (PWR)
- vegetation
- Brazil
- environmental monitoring
Publication and Content Type
- art (subject category)
- ref (subject category)
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