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Ecological half-lives of radiocesium on Izu-Oshima Island related with the Fukushima Daiichi nuclear power plant accident

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Abstract

Ecological half-lives of radiocesium were observed on Izu-Oshima Island, Japan, a place which experiences typhoons annually. The estimated ecological half-lives (uncertainty) based on the observations above an asphalt and a bare surface were 1.6 year (31.6%) and 1.9 year (14.4%), respectively; those of 134Cs and 137Cs in soil were 1.5 year (7.2%) and 4.0 year (5.9%), respectively. The radiation level was quickly returned to the original level compared to other locations that do not experience such typhoon activity.

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Acknowledgements

The authors thank Mr. Toshirou Nakabayashi for providing assistance with the car-borne survey.

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Authors and Affiliations

  1. Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa-ku, Tokyo, 116-8551, Japan

    Kazumasa Inoue, Masahiro Fukushi, Hideo Shimizu, Hiroshi Tsuruoka, Ken Ichimura, Hayato Tanifuji, Nimelan Veerasamy, Shuto Nakazawa & Yoshiaki Taguchi

  2. Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University, 1-1 Hachioji-shi, Tokyo, 192-0397, Japan

    Makoto Kurokawa & Hinako Kondo

  3. Department of Radiological Sciences, Tsukuba International University, Tsuchiura, Ibaraki, 300-0051, Japan

    Hideo Shimizu & Hiroshi Tsuruoka

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  1. Kazumasa Inoue
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Correspondence to Kazumasa Inoue.

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Inoue, K., Fukushi, M., Kurokawa, M. et al. Ecological half-lives of radiocesium on Izu-Oshima Island related with the Fukushima Daiichi nuclear power plant accident. J Radioanal Nucl Chem 324, 291–300 (2020). https://doi.org/10.1007/s10967-020-07040-9

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  • DOI: https://doi.org/10.1007/s10967-020-07040-9

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