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Evaluation of the Relationship between Current Internal (137)Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine

After the Chernobyl Nuclear Power Plant accident, the residents living around the Chernobyl were revealed to have been internally exposed to (137)Cs through the intake of contaminated local foods. To evaluate the current situation of internal (137)Cs exposure and the relationship between the (137)Cs...

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Autores principales: Kimura, Yuko, Okubo, Yuka, Hayashida, Naomi, Takahashi, Jumpei, Gutevich, Alexander, Chorniy, Sergiy, Kudo, Takashi, Takamura, Noboru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4581839/
https://www.ncbi.nlm.nih.gov/pubmed/26402065
http://dx.doi.org/10.1371/journal.pone.0139007
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author Kimura, Yuko
Okubo, Yuka
Hayashida, Naomi
Takahashi, Jumpei
Gutevich, Alexander
Chorniy, Sergiy
Kudo, Takashi
Takamura, Noboru
author_facet Kimura, Yuko
Okubo, Yuka
Hayashida, Naomi
Takahashi, Jumpei
Gutevich, Alexander
Chorniy, Sergiy
Kudo, Takashi
Takamura, Noboru
author_sort Kimura, Yuko
collection PubMed
description After the Chernobyl Nuclear Power Plant accident, the residents living around the Chernobyl were revealed to have been internally exposed to (137)Cs through the intake of contaminated local foods. To evaluate the current situation of internal (137)Cs exposure and the relationship between the (137)Cs soil contamination and internal exposure in residents, we investigated the (137)Cs body burden in residents who were living in 10 selected cities from the northern part of the Zhitomir region, Ukraine, and collected soil samples from three family farms and wild forests of each city to measured (137)Cs concentrations. The total number of study participants was 36,862, of which 68.9% of them were female. After 2010, the annual effective doses were less than 0.1 mSv in over 90% of the residents. The (137)Cs body burden was significantly higher in autumn than other seasons (p < 0.001) and in residents living in more contaminated areas (p < 0.001). We also found a significant correlation between the proportion of residents in each city with an estimated annual exposure dose exceeding 0.1 mSv and (137)Cs concentration of soil samples from family farms (r = 0.828, p = 0.003). In conclusion, more than 25 years after the Chernobyl accident, the internal exposure doses to residents living in contaminated areas of northern Ukraine is limited but still related to (137)Cs soil contamination. Furthermore, the consumption of local foods is considered to be the cause of internal exposure.
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spelling pubmed-45818392015-10-01 Evaluation of the Relationship between Current Internal (137)Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine Kimura, Yuko Okubo, Yuka Hayashida, Naomi Takahashi, Jumpei Gutevich, Alexander Chorniy, Sergiy Kudo, Takashi Takamura, Noboru PLoS One Research Article After the Chernobyl Nuclear Power Plant accident, the residents living around the Chernobyl were revealed to have been internally exposed to (137)Cs through the intake of contaminated local foods. To evaluate the current situation of internal (137)Cs exposure and the relationship between the (137)Cs soil contamination and internal exposure in residents, we investigated the (137)Cs body burden in residents who were living in 10 selected cities from the northern part of the Zhitomir region, Ukraine, and collected soil samples from three family farms and wild forests of each city to measured (137)Cs concentrations. The total number of study participants was 36,862, of which 68.9% of them were female. After 2010, the annual effective doses were less than 0.1 mSv in over 90% of the residents. The (137)Cs body burden was significantly higher in autumn than other seasons (p < 0.001) and in residents living in more contaminated areas (p < 0.001). We also found a significant correlation between the proportion of residents in each city with an estimated annual exposure dose exceeding 0.1 mSv and (137)Cs concentration of soil samples from family farms (r = 0.828, p = 0.003). In conclusion, more than 25 years after the Chernobyl accident, the internal exposure doses to residents living in contaminated areas of northern Ukraine is limited but still related to (137)Cs soil contamination. Furthermore, the consumption of local foods is considered to be the cause of internal exposure. Public Library of Science 2015-09-24 /pmc/articles/PMC4581839/ /pubmed/26402065 http://dx.doi.org/10.1371/journal.pone.0139007 Text en © 2015 Kimura et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Kimura, Yuko
Okubo, Yuka
Hayashida, Naomi
Takahashi, Jumpei
Gutevich, Alexander
Chorniy, Sergiy
Kudo, Takashi
Takamura, Noboru
Evaluation of the Relationship between Current Internal (137)Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine
title Evaluation of the Relationship between Current Internal (137)Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine
title_full Evaluation of the Relationship between Current Internal (137)Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine
title_fullStr Evaluation of the Relationship between Current Internal (137)Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine
title_full_unstemmed Evaluation of the Relationship between Current Internal (137)Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine
title_short Evaluation of the Relationship between Current Internal (137)Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine
title_sort evaluation of the relationship between current internal (137)cs exposure in residents and soil contamination west of chernobyl in northern ukraine
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4581839/
https://www.ncbi.nlm.nih.gov/pubmed/26402065
http://dx.doi.org/10.1371/journal.pone.0139007
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