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Spatial variation of radioiodine (129I) dissolution from sediment of a brackish lake beside a spent nuclear fuel reprocessing plant in Japan

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Abstract

The dissolution and chemical forms of sedimentary radioiodine (129I) in aquatic sediments were evaluated in Lake Obuchi, which is situated adjacent to a spent nuclear fuel reprocessing plant in Japan. The dissolution flux of 129I from the sediment to its overlying water in the western part of the lake was negligible as with that reported in our previous study in the center part. The contribution of the soluble fraction of sedimentary 129I was larger in the western part of the lake than in the center.

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Acknowledgements

We wish to thank Ms. Monika Wilk-Alemany and Dr. William E. Kieser of A. E. Lalonde AMS Laboratory at the University of Ottawa, and Drs. Naoki Kinoshita and Jun Kuwahara of the Japan Atomic Energy Agency, for helping with the AMS analysis for our study. This study was supported by the Environment Research and Technology Development Fund [1RF-1902] of the Environmental Restoration and Conservation Agency of Japan. In addition, the study was performed under a contract with the government of Aomori Prefecture, Japan.

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  1. Department of Radioecology, Institute for Environmental Sciences (IES), 1-7 Rokkasho, Aomori, 039-3212, Japan

    Yuhi Satoh, Shoko Imai & Shinji Ueda

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  1. Yuhi Satoh
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  2. Shoko Imai
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Correspondence to Yuhi Satoh.

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Satoh, Y., Imai, S. & Ueda, S. Spatial variation of radioiodine (129I) dissolution from sediment of a brackish lake beside a spent nuclear fuel reprocessing plant in Japan. J Radioanal Nucl Chem 329, 1477–1489 (2021). https://doi.org/10.1007/s10967-021-07890-x

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