Effects of soil organic matter decomposition on cesium-137 bioavailability in soils.
Project/Area Number |
25870049
|
Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Environmental dynamic analysis
Risk sciences of radiation and chemicals
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Research Institution | Tohoku University |
Principal Investigator |
Arai Hirotsugu 東北大学, 工学(系)研究科(研究院), 助教 (20642078)
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
|
Keywords | 放射性セシウム / 土壌有機物 / 分解・無機化 |
Outline of Final Research Achievements |
This study aimed to elucidate the effects of soil organic matter decomposition on the changes of the amount of bioavailable cesium-137 in soils. The radioactively contaminated soils were incubated in the laboratory to enhance the decomposition. Sequential extraction procedure was applied to those soils for fractionating cesium-137 with different bioavailability. A significant reduction of cesium-137 binding soil organic matter was observed at the first 30 day incubation. On the other hand, water extractable cesium-137 was increased during the same period. In addition, this gain in water extractable cesium-137 might be regulated by the quality of soil organic matter. Based on the results, it is concluded that the decomposition of soil organic matter changed the cesium-137 bioavailability in the soil. Furthermore, it is suggested that the decomposability of soil organic matter should be taken into the consideration for the future cesium-137 dynamics between soil and plants.
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Report
(4 results)
Research Products
(16 results)
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[Journal Article] Application of micron X-ray CT based on micro-PIXE to investigate the distribution of Cs in silt particles for environmental remediation in Fukushima Prefecture2016
Author(s)
K. Ishii, T. Hatakeyama, S. Itoh, D. Sata, T. Ohnuma, T. Yamaguchi, H. Arai, H. Arai, S. Matsuyama, A. Terakawa, S. Kim
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 371
Pages: 387-391
DOI
Related Report
Peer Reviewed
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[Journal Article] The Determination of Soil-plant Transfer Coefficients of Cesium-137 and other elements by g-Ray Measurement and PIXE Analysis, for use in the Remediation of Fukushima2015
Author(s)
K.Ishii, A. Fujita, S. Toyama, A.Terakawa, S.Matsuyama, H.Arai, N.Osada, S. Takyu, T.Matsuyama, S. Koshio, K. Watanabe, S. Ito, K.Kasahara
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Journal Title
Physics Procedia
Volume: 66
Pages: 278-286
DOI
Related Report
Peer Reviewed
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[Journal Article] Evaluating radiocesium retention ablility of root-mat horizon using micro–PIXE analysis2015
Author(s)
. H. Arai, K. Ishii, S. Matsuyama, F. Fujishiro, A. Ishizaki, N. Osada, H. Ssugai, S. Koshio, K. Kusano, Y. Nozawa, S. Yamauchi, M. Karahashi, S. Oshikawa, K. Kikuchi, K. Watanabe, Y. Suzuki, Y. Kikuchi, A. Terakawa.
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Journal Title
International Journal of PIXE
Volume: 24
Issue: 01n02
Pages: 29-34
DOI
Related Report
Peer Reviewed
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[Journal Article] Micro-PIXE analysis of the distribution of cesium in clay particles for environmental remediation of Fukushima2015
Author(s)
K. Ishii, S. Itoh, D. Sata, S. Matsuyama, A. Terakawa, S. Kim, H. Arai, N. Osada, T. Satoh, M. Koka, A. Kitamura, T. Kamiya.
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Journal Title
International Journal of PIXE
Volume: 24
Issue: 03n04
Pages: 131-136
DOI
Related Report
Peer Reviewed
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[Journal Article] Application of PIXE analysis to investigation of plants cultivated with contaminated soil of Fukushima2014
Author(s)
K. Ishii, A. Terakawa, S. Matsuyama, A. Ishizaki, H. Arai, N. Osada, H. Sugai, H. Takahashi, K. Sera, H. Sasaki, T. Sawamura
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 332
Pages: 46-49
DOI
Related Report
Peer Reviewed
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[Journal Article] Remediation of plants contaminated with cesium by aqueous cleaning2014
Author(s)
N. Osada,., K. Ishii, S. Matsuyama, H. Sugai, K. Kusano, Y. Nozawa, S. Yamauchi, M. Karahashi, S. Oshikawa, K. Kikuchi, S. Koshio, K. Watanabe, S. Itoh, Y. Suzuki, A. Terakawa, Y. Kikuchi, F. Fujishiro, A. Ishizaki, H. Arai
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 318
Pages: 102-104
DOI
Related Report
Peer Reviewed
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[Journal Article] Concentration of Cs in plants and water resulting from radioactive pollution2014
Author(s)
A. Ishizaki, K. Ishii, S. Matsuyama, F. Fujishiro, H. Arai, N. Osada, H. Sugai, S. Koshio, S. Yamauchi, K. Kusano, Y. Nozawa, M. Karahashi, S. Oshikawa, K. Kikuchi, K. Watanabe, S. Itoh, K. Kasahara, S. Toyama, Y. Suzuki
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 318
Pages: 105-108
DOI
Related Report
Peer Reviewed
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[Journal Article] Reducing logistical barriers to radioactive soil remediation after the Fukushima No. 1 nuclear power plant accident2014
Author(s)
K. Ishii, A. Terakawa, S. Matsuyama, Y. Kikuchi, F. Fujishiro, A. Ishizaki, N. Osada, H. Arai, H. Sugai, H. Takahashi, K. Nagakubo, T. Sakurada, H. Yamazaki, S. Kim
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 318
Pages: 70-75
DOI
Related Report
Peer Reviewed
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[Journal Article] PIXE analyses of cesium in rice grains2014
Author(s)
Hiroyuki Sugai, Keizo Ishii, Shigeo Matsuyama, Atsuki Terakawa, Yohei Kikuchi, Hiroaki Takahashi, Azusa Ishizaki, Fumito Fujishiro, Hirotsugu Arai, Naoyuki Osada, Masahiro Karahashi, Yuichiro Nozawa, Shosei Yamauchi, Kosuke Kikuchi, Shigeki Koshio, Koji Watanabe
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 318
Pages: 191-193
DOI
Related Report
Peer Reviewed
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