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External and internal irradiation of a Rural Bryansk (Russia) population from 1990 to 2000, following high deposition of radioactive caesium from the chernobyl accident.

Thornberg, Charlotte LU ; Vesanen, R; Wallström, E; Zvonova, I; Jesko, T; Balonov, M and Mattsson, Sören LU (2005) In Radiation and Environmental Biophysics 44(2). p.97-106
Abstract
In 1990, a joint Nordic-Russian project was initiated in order to make independent estimations of the effective dose to selected groups of inhabitants in a highly contaminated area around the city of Novozybkov In the western Bryansk region of Russia. The inhabitants were living in six villages with initial contamination levels of Cs-137 between 0.9 and 2.7 MBq m(-2). Some villages had been decontaminated, others not. Both school children and adults participated in the study. The external irradiation of 100-130 inhabitants was determined during 1 month in September-October each year from 1990 to 2000 (except 1999), using individual thermoluminescent dosemeters. The body burden of (137,) (CS)-C-134 was determined by in vivo measurements in... (More)
In 1990, a joint Nordic-Russian project was initiated in order to make independent estimations of the effective dose to selected groups of inhabitants in a highly contaminated area around the city of Novozybkov In the western Bryansk region of Russia. The inhabitants were living in six villages with initial contamination levels of Cs-137 between 0.9 and 2.7 MBq m(-2). Some villages had been decontaminated, others not. Both school children and adults participated in the study. The external irradiation of 100-130 inhabitants was determined during 1 month in September-October each year from 1990 to 2000 (except 1999), using individual thermoluminescent dosemeters. The body burden of (137,) (CS)-C-134 was determined by in vivo measurements in about 500 inhabitants annually from 1991 to 2000, and for a subgroup also with analysis of the (CS)-C-137 concentration in urine. The mean effective dose (E) from external and internal irradiation due to Cs-137,Cs- 134 deposition varied between 2.5 and 1.2 mSv per year between 1990 and 2000. The total mean E decreased, on average, by 9% per year, while the mean external dose decreased by 16% per year. The dose rate from internal radiation decreased more slowly than the dose rate from external radiation, and also showed an irregular time variation. The contribution from the internal dose to the total E was 30-50%, depending on the village. Predictions for the long-term changes in the effective dose to people living in the areas are presented. The cumulated E for the 70 years following the accident was estimated to be about 90 mSv with the assumption that both internal and external dose decrease by 2% per year after year 2000. The highest E during a life-time received by single individuals living in the area may amount to around 500 mSv considering the individual variations in E. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Radiation and Environmental Biophysics
volume
44
issue
2
pages
97 - 106
publisher
Springer
external identifiers
  • wos:000233303100003
  • pmid:16175396
  • scopus:27644574244
ISSN
1432-2099
DOI
10.1007/s00411-005-0007-2
language
English
LU publication?
yes
id
d77b65c9-32b3-421b-9816-2212c2d40490 (old id 143538)
alternative location
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=16175396&dopt=Abstract
date added to LUP
2007-07-30 16:03:21
date last changed
2017-01-01 07:20:49
@article{d77b65c9-32b3-421b-9816-2212c2d40490,
  abstract     = {In 1990, a joint Nordic-Russian project was initiated in order to make independent estimations of the effective dose to selected groups of inhabitants in a highly contaminated area around the city of Novozybkov In the western Bryansk region of Russia. The inhabitants were living in six villages with initial contamination levels of Cs-137 between 0.9 and 2.7 MBq m(-2). Some villages had been decontaminated, others not. Both school children and adults participated in the study. The external irradiation of 100-130 inhabitants was determined during 1 month in September-October each year from 1990 to 2000 (except 1999), using individual thermoluminescent dosemeters. The body burden of (137,) (CS)-C-134 was determined by in vivo measurements in about 500 inhabitants annually from 1991 to 2000, and for a subgroup also with analysis of the (CS)-C-137 concentration in urine. The mean effective dose (E) from external and internal irradiation due to Cs-137,Cs- 134 deposition varied between 2.5 and 1.2 mSv per year between 1990 and 2000. The total mean E decreased, on average, by 9% per year, while the mean external dose decreased by 16% per year. The dose rate from internal radiation decreased more slowly than the dose rate from external radiation, and also showed an irregular time variation. The contribution from the internal dose to the total E was 30-50%, depending on the village. Predictions for the long-term changes in the effective dose to people living in the areas are presented. The cumulated E for the 70 years following the accident was estimated to be about 90 mSv with the assumption that both internal and external dose decrease by 2% per year after year 2000. The highest E during a life-time received by single individuals living in the area may amount to around 500 mSv considering the individual variations in E.},
  author       = {Thornberg, Charlotte and Vesanen, R and Wallström, E and Zvonova, I and Jesko, T and Balonov, M and Mattsson, Sören},
  issn         = {1432-2099},
  language     = {eng},
  number       = {2},
  pages        = {97--106},
  publisher    = {Springer},
  series       = {Radiation and Environmental Biophysics},
  title        = {External and internal irradiation of a Rural Bryansk (Russia) population from 1990 to 2000, following high deposition of radioactive caesium from the chernobyl accident.},
  url          = {http://dx.doi.org/10.1007/s00411-005-0007-2},
  volume       = {44},
  year         = {2005},
}