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Radiocesium concentrations in wild boars captured within 20 km of the Fukushima Daiichi Nuclear Power Plant

The Fukushima Daiichi Nuclear Power Plant (FDNPP) accident in 2011 released large amounts of artificial radioactive substances into the environment. In this study, we measured the concentration of radiocesium ((134)Cs + (137)Cs) in 213 muscle samples from wild boars (Sus scrofa) captured in Tomioka...

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Autores principales: Cui, Limeng, Orita, Makiko, Taira, Yasuyuki, Takamura, Noboru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7283223/
https://www.ncbi.nlm.nih.gov/pubmed/32518319
http://dx.doi.org/10.1038/s41598-020-66362-6
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author Cui, Limeng
Orita, Makiko
Taira, Yasuyuki
Takamura, Noboru
author_facet Cui, Limeng
Orita, Makiko
Taira, Yasuyuki
Takamura, Noboru
author_sort Cui, Limeng
collection PubMed
description The Fukushima Daiichi Nuclear Power Plant (FDNPP) accident in 2011 released large amounts of artificial radioactive substances into the environment. In this study, we measured the concentration of radiocesium ((134)Cs + (137)Cs) in 213 muscle samples from wild boars (Sus scrofa) captured in Tomioka town, which is located within 20 km of the FDNPP. The results showed that 210 (98.6%) muscle samples still exceeded the regulatory radiocesium limit (100 Bq/kg) for general foods. Radiocesium ((134)Cs + (137)Cs) levels ranged from 87.1–8,120 Bq/kg fresh mass (FM), with a median concentration of 450 Bq/kg FM. The median committed effective dose was estimated to be 0.070–0.26 μSv/day for females and 0.062–0.30 μSv/day for males. The committed effective dose for one-time ingestion of wild boar meat could be considered extremely low for residents in Tomioka. The relatively high levels of radioactivity found in this study suggest that the high variability of food sources may have led to the large accumulation of radioactive substances. These results suggest that comprehensive long-term monitoring is needed to identify risk factors affecting recovery from a nuclear disaster.
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spelling pubmed-72832232020-06-15 Radiocesium concentrations in wild boars captured within 20 km of the Fukushima Daiichi Nuclear Power Plant Cui, Limeng Orita, Makiko Taira, Yasuyuki Takamura, Noboru Sci Rep Article The Fukushima Daiichi Nuclear Power Plant (FDNPP) accident in 2011 released large amounts of artificial radioactive substances into the environment. In this study, we measured the concentration of radiocesium ((134)Cs + (137)Cs) in 213 muscle samples from wild boars (Sus scrofa) captured in Tomioka town, which is located within 20 km of the FDNPP. The results showed that 210 (98.6%) muscle samples still exceeded the regulatory radiocesium limit (100 Bq/kg) for general foods. Radiocesium ((134)Cs + (137)Cs) levels ranged from 87.1–8,120 Bq/kg fresh mass (FM), with a median concentration of 450 Bq/kg FM. The median committed effective dose was estimated to be 0.070–0.26 μSv/day for females and 0.062–0.30 μSv/day for males. The committed effective dose for one-time ingestion of wild boar meat could be considered extremely low for residents in Tomioka. The relatively high levels of radioactivity found in this study suggest that the high variability of food sources may have led to the large accumulation of radioactive substances. These results suggest that comprehensive long-term monitoring is needed to identify risk factors affecting recovery from a nuclear disaster. Nature Publishing Group UK 2020-06-09 /pmc/articles/PMC7283223/ /pubmed/32518319 http://dx.doi.org/10.1038/s41598-020-66362-6 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Cui, Limeng
Orita, Makiko
Taira, Yasuyuki
Takamura, Noboru
Radiocesium concentrations in wild boars captured within 20 km of the Fukushima Daiichi Nuclear Power Plant
title Radiocesium concentrations in wild boars captured within 20 km of the Fukushima Daiichi Nuclear Power Plant
title_full Radiocesium concentrations in wild boars captured within 20 km of the Fukushima Daiichi Nuclear Power Plant
title_fullStr Radiocesium concentrations in wild boars captured within 20 km of the Fukushima Daiichi Nuclear Power Plant
title_full_unstemmed Radiocesium concentrations in wild boars captured within 20 km of the Fukushima Daiichi Nuclear Power Plant
title_short Radiocesium concentrations in wild boars captured within 20 km of the Fukushima Daiichi Nuclear Power Plant
title_sort radiocesium concentrations in wild boars captured within 20 km of the fukushima daiichi nuclear power plant
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7283223/
https://www.ncbi.nlm.nih.gov/pubmed/32518319
http://dx.doi.org/10.1038/s41598-020-66362-6
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