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Cesium concentrations in various environmental media at Namie, Fukushima

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Abstract

The radioactivity of cesium in the water and sediments of two major rivers was measured along with airborne radioactivity in Namie Town, after the recent partial lift on the evacuation order in 2017. The observed concentrations were up to 384 ± 11 mBq/L for 137Cs in unfiltered water and 1.28 ± 0.09 mBq m−3 for 137Cs in air, while the sediment had a maximum of 44,900 ± 23 Bq kg−1 for 137Cs. The potential yearly committed effective dose was estimated based on the data.

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Acknowledgements

This work was supported by Research on the Health Effects of Radiation organized by Ministry of the Environment Japan. We express our thanks to the local government of Namie and to the Fukushima prefectural government, who kindly provided the monitoring opportunity.

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Correspondence to S. Tokonami.

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Hegedűs, M., Shiroma, Y., Iwaoka, K. et al. Cesium concentrations in various environmental media at Namie, Fukushima. J Radioanal Nucl Chem 323, 197–204 (2020). https://doi.org/10.1007/s10967-019-06942-7

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Keywords

  • Radioactivity in water
  • Radioactivity in sediments
  • Airborne radioactivity
  • Cesium
  • Fukushima
  • Namie