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Vertical distributions of global fallout $$^{137}$$Cs and $$^{14}$$C in a Japanese forest soil profile and their implications for the fate and migration processes of Fukushima-derived $$^{137}$$Cs

Koarashi, Jun   ; Atarashi-Andoh, Mariko  ; Amano, Hikaru*; Matsunaga, Takeshi

Vertical distributions of global fallout $$^{137}$$Cs and $$^{14}$$C were investigated in a Japanese forest soil in 2001. Even 38 years after the fallout, $$^{137}$$Cs was still observed mostly in the uppermost 5 cm. A preferential accumulation of $$^{137}$$Cs was found in a 1-cm-thick transition layer between organic-rich A and underlying B horizons. This unique observation indicated that $$^{137}$$Cs migrated through the A horizon at a rate of 0.20% y$$^{-1}$$ and the transition layer acted as a barrier for $$^{137}$$Cs migration to deeper layers. The vertical distributions of $$^{137}$$Cs and $$^{14}$$C were significantly correlated, suggesting a coupled downward migration of $$^{137}$$Cs and organic matter on a time scale of decades, along the same physical pathways.

Language

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English

Journal

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Journal of Radioanalytical and Nuclear Chemistry

Volume

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311

Number

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1

Pages

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p.473 - 481

Publication Year/Month

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2017/01

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1007/s10967-016-4938-7

DOI for research data

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Keywords

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福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident

Research Facility

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AMS(加速器質量分析装置)  

Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:85.35

Category:Chemistry, Analytical

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