Clay Minerals Sorbing Radiocesium in Fukushima : Investigation by IP Autoradiography and Electron Microscopy
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- KOGURE Toshihiro
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo
Bibliographic Information
- Other Title
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- 放射性Csを吸着している粘土鉱物はどのようなものか : IPオートラジオグラフィと電子顕微鏡による探索(<シンポジウム特集>粘土とセシウム)
- 放射性Csを吸着している粘土鉱物はどのようなものか : IPオートラジオグラフィと電子顕微鏡による探索
- ホウシャセイ Cs オ キュウチャク シテ イル ネンド コウブツ ワ ドノ ヨウ ナ モノ カ : IP オートラジオグラフィ ト デンシ ケンビキョウ ニ ヨル タンサク
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Abstract
Although more than four years have passed after the accident at the Fukushima-Daiichi nuclear power plant, the state of radioactive cesium, which is the main source of the high radioactivity in the environment of Fukushima, is not well understood yet. To advance this situation, we tried to specify radioactive soil particles using IP autoradiography and electron microscopy. As a result, the radioactive soil particles were classified into three types from their morphologies and chemical compositions: (1) conglomerates of fine clay minerals, (2) organic matter containing clay mineral particulates, and (3) weathered biotite with a platy shape originated from granite. The weathered biotite is actually a biotite-vermiculite mixed-layer mineral, forming a porous structure with well-developed cleavage, and kaolinite filling the cleavage spaces. It was indicated that radioactive cesium is located uniformly in the weathered biotite, rather than concentrated around the edges of the platy shape.
Journal
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- Journal of the Clay Science Society of Japan (in Japanese)
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Journal of the Clay Science Society of Japan (in Japanese) 54 (1), 22-27, 2015
The Clay Science Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282679089439616
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- NII Article ID
- 110009984759
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- NII Book ID
- AN00199972
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- ISSN
- 21863563
- 04706455
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- NDL BIB ID
- 026695344
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed