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C-14, delta C-13 and total C content in soils around a Brazilian PWR nuclear power plant

Dias, Cintia Melazo; Telles, Everaldo C.; Santos, Roberto Ventura; Stenström, Kristina LU ; Nicoli, Ieda Gomes; Correa, Rosangela da Silveira and Skog, Göran LU (2009) In Journal of Environmental Radioactivity 100(4). p.348-353
Abstract
Nuclear power plants release C-14 during routine operation mainly as airborne gaseous effluents. Because of the long half-life (5730 years) and biological importance of this radionuclide (it is incorporated in plant tissue by photosynthesis), several countries have monitoring programs in order to quantify and control these emissions. This paper compares the activity of C-14 in soils taken within I km from a Brazilian nuclear power plant with soils taken within a reference area located 50 km away from the reactor site. Analyses of total carbon, delta C-13 and Cs-137 were also performed in order to understand the local soil dynamics. Except for one of the profiles, the isotopic composition of soil organic carbon reflected the actual forest... (More)
Nuclear power plants release C-14 during routine operation mainly as airborne gaseous effluents. Because of the long half-life (5730 years) and biological importance of this radionuclide (it is incorporated in plant tissue by photosynthesis), several countries have monitoring programs in order to quantify and control these emissions. This paper compares the activity of C-14 in soils taken within I km from a Brazilian nuclear power plant with soils taken within a reference area located 50 km away from the reactor site. Analyses of total carbon, delta C-13 and Cs-137 were also performed in order to understand the local soil dynamics. Except for one of the profiles, the isotopic composition of soil organic carbon reflected the actual forest vegetation present in both areas. The Cs-137 data show that the soils from the base of hills are probably allocthonous. The C-14 Measurements showed that there is no accumulation due to the operation of the nuclear facility, although excess C-14 Was found in the litter taken in the area close to power plant. This indicates that the anthropogenic signal observed in the litter fall has not been transferred yet to the soil. This study is part of an extensive research programme in which other samples including air, vegetation and gaseous effluents (taken in the vent stack of the Brazilian nuclear power reactors Angra I and II) were also analyzed. The present paper aimed to evaluate how C-14 emissions from the nuclear power plant are transferred and stored by soils present in the Surroundings of the reactor site. This is the first study concerning anthropogenic 14C in soils in Brazil. (9) 2009 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nuclear power plants, Cs137, C-13, Soils, C-14, PWR
in
Journal of Environmental Radioactivity
volume
100
issue
4
pages
348 - 353
publisher
Elsevier
external identifiers
  • wos:000264649500011
  • scopus:61349143616
ISSN
1879-1700
DOI
10.1016/j.jenvrad.2008.12.017
language
English
LU publication?
yes
id
a06bc908-1c94-4a18-adcd-10fdbd050893 (old id 1401020)
date added to LUP
2009-06-12 09:23:40
date last changed
2017-03-05 03:33:35
@article{a06bc908-1c94-4a18-adcd-10fdbd050893,
  abstract     = {Nuclear power plants release C-14 during routine operation mainly as airborne gaseous effluents. Because of the long half-life (5730 years) and biological importance of this radionuclide (it is incorporated in plant tissue by photosynthesis), several countries have monitoring programs in order to quantify and control these emissions. This paper compares the activity of C-14 in soils taken within I km from a Brazilian nuclear power plant with soils taken within a reference area located 50 km away from the reactor site. Analyses of total carbon, delta C-13 and Cs-137 were also performed in order to understand the local soil dynamics. Except for one of the profiles, the isotopic composition of soil organic carbon reflected the actual forest vegetation present in both areas. The Cs-137 data show that the soils from the base of hills are probably allocthonous. The C-14 Measurements showed that there is no accumulation due to the operation of the nuclear facility, although excess C-14 Was found in the litter taken in the area close to power plant. This indicates that the anthropogenic signal observed in the litter fall has not been transferred yet to the soil. This study is part of an extensive research programme in which other samples including air, vegetation and gaseous effluents (taken in the vent stack of the Brazilian nuclear power reactors Angra I and II) were also analyzed. The present paper aimed to evaluate how C-14 emissions from the nuclear power plant are transferred and stored by soils present in the Surroundings of the reactor site. This is the first study concerning anthropogenic 14C in soils in Brazil. (9) 2009 Elsevier Ltd. All rights reserved.},
  author       = {Dias, Cintia Melazo and Telles, Everaldo C. and Santos, Roberto Ventura and Stenström, Kristina and Nicoli, Ieda Gomes and Correa, Rosangela da Silveira and Skog, Göran},
  issn         = {1879-1700},
  keyword      = {Nuclear power plants,Cs137,C-13,Soils,C-14,PWR},
  language     = {eng},
  number       = {4},
  pages        = {348--353},
  publisher    = {Elsevier},
  series       = {Journal of Environmental Radioactivity},
  title        = {C-14, delta C-13 and total C content in soils around a Brazilian PWR nuclear power plant},
  url          = {http://dx.doi.org/10.1016/j.jenvrad.2008.12.017},
  volume       = {100},
  year         = {2009},
}