Year-round variations in the fluvial transport load of particulate .sup.137Cs in a forested catchment affected by the Fukushima Daiichi Nuclear Power Plant accident

Particulate .sup.137Cs was collected from stream water for 2 years to assess the long-term trend of .sup.137Cs discharge from a forest after the Fukushima Nuclear Power Plant accident. A seasonal increase in the fluvial transport load of particulate .sup.137Cs in suspended solids (SS) was observed i...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2016-11, Vol.310 (2), p.679
Main Authors: Matsunaga, Takeshi, Nakanishi, Takahiro, Atarashi-Andoh, Mariko, Takeuchi, Erina, Muto, Kotomi, Tsuduki, Katsunori, Nishimura, Syusaku, Koarashi, Jun, Otosaka, Shigeyoshi, Sato, Tsutomu, Miyata, Yoshiki, Nagao, Seiya
Format: Article
Language:English
Subjects:
Accidents
Air pollution
Clay minerals
Geomorphology
Green technology
Nuclear accidents
Nuclear energy
Nuclear power plants
Rain
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Summary:Particulate .sup.137Cs was collected from stream water for 2 years to assess the long-term trend of .sup.137Cs discharge from a forest after the Fukushima Nuclear Power Plant accident. A seasonal increase in the fluvial transport load of particulate .sup.137Cs in suspended solids (SS) was observed in July-October when rainfall was abundant. The .sup.137Cs load was controlled by the SS load. This control was attributed to cesium affinity for phyllosilicate clay minerals as verified by the low extractability of particulate .sup.137Cs. These findings indicate the fluvial particulate .sup.137Cs load is significantly related to the climate and geomorphological features of Japan.
ISSN:0236-5731
DOI:10.1007/s10967-016-4840-3