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Overview of active cesium contamination of freshwater fish in Fukushima and Eastern Japan

a,1, 1

Scientific Reports

Nature Publishing Group

3638159

10.1038/srep01742

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      Abstract

      This paper focuses on an overview of radioactive cesium 137 (quasi-Cs137 included Cs134) contamination of freshwater fish in Fukushima and eastern Japan based on the data published by the Fisheries Agency of the Japanese Government in 2011. In the area north and west of the Fukushima Nuclear plant, freshwater fish have been highly contaminated. For example, the mean of active cesium (quasi-Cs137) contamination of Ayu (Plecoglossus altivelis) is 2,657 Bq/kg at Mano River, 20–40 km north-west from the plant. Bioaccumulation is observed in the Agano river basin in Aizu sub-region, 70–150 km west from the plant. The active cesium (quasi-Cs137) contamination of carnivorous Salmondae is around 2 times higher than herbivorous Ayu. The extent of active cesium (quasi-Cs137) contamination of Ayu is observed in the entire eastern Japan. The some level of the contamination is recognized even in Shizuoka prefecture, 400 km south-west from the plant.

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      Affiliations
      [1]The Center for Risk Research, Shiga University
      Journal
      Sci Rep
      Sci Rep
      Scientific Reports
      Nature Publishing Group
      2045-2322
      29 April 2013
      2013
      : 3
      Copyright © 2013, Macmillan Publishers Limited. All rights reserved

      This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/

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