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J Environ Radioact. 2016 Nov;164:60-64. doi: 10.1016/j.jenvrad.2016.07.002. Epub 2016 Jul 15.

Radiocaesium contamination of wild boars in Fukushima and surrounding regions after the Fukushima nuclear accident.

Author information

1
Fukushima Project Headquarters, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan. Electronic address: fuma.shoichi@qst.go.jp.
2
Fukushima Project Headquarters, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan.
3
Hokkaido University of Education Kushiro Campus, 1-15-55 Shiroyama, Kushiro, Hokkaido 085-8580, Japan.
4
Tokyo Nuclear Services Co., Ltd., Sorimachi Building, 1-3-5 Taito, Taito-ku, Tokyo 110-0016, Japan.
5
Department of Management and Planning, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan.

Abstract

Analysis of radioactivity data obtained under the food monitoring campaign in Japan indicates that elevated 134Cs+137Cs activity concentrations in wild boar meat remained constant or slowly decreased in Fukushima and surrounding prefectures from 2011 to 2015. The activity concentrations in some samples are still over the regulatory limit of 100 Bq kg-1 fresh weight, even in 2015. Activity concentrations of 137Cs in muscle of wild boars we captured in 2011 were higher than those in kidney, liver, spleen, heart and lung. A food processing retention factor, Fr, was 0.5 or 0.6 for 137Cs when the wild boar meat was boiled, suggesting that a parboiling process is effective for reduction of radiocaesium intake from wild boar meat.

KEYWORDS:

Cooking; Food; Game; Hunting; Monitoring; Organ

PMID:
27423074
DOI:
10.1016/j.jenvrad.2016.07.002
[Indexed for MEDLINE]

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