| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2019-03-05 |
| タイトル |
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タイトル |
Cs-135 activity and Cs-135/Cs-137 atom ratio in environmental samples before and after the Fukushima Daiichi Nuclear Power Plant accident |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Yang, Guosheng
Tazoe, Hirofumi
Yamada, Masatoshi
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| 著者所属 |
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値 |
Hirosaki Univ, Inst Radiat Emergency Med, Dept Radiat Chem |
| 著者所属 |
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値 |
Hirosaki Univ, Inst Radiat Emergency Med, Dept Radiat Chem |
| 著者所属 |
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値 |
Hirosaki Univ, Inst Radiat Emergency Med, Dept Radiat Chem |
| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Cs-135/Cs-137 is a potential tracer for radiocesium source identification. However, due to the challenge to measure Cs-135, there were no Cs-135 data available for Japanese environmental samples before the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. It was only 3 years after the accident that limited Cs-135 values could be measured in heavily contaminated environmental samples. In the present study, activities of Cs-134, Cs-135, and Cs-137, along with their ratios in 67 soil and plant samples heavily and lightly contaminated by the FDNPP accident were measured by combining gamma spectrometry with ICP-MS/MS. The arithmetic means of the Cs-134/Cs-137 activity ratio (1.033 +/- 0.006) and Cs-135/Cs-137 atom ratio (0.334 +/- 0.005) (decay corrected to March 11, 2011), from old leaves of plants collected immediately after the FDNPP accident, were confirmed to represent the FDNPP derived radiocesium signature. Subsequently, for the first time, trace Cs-135 amounts before the FDNPP accident were deduced according to the contribution of global and FDNPP accident-derived fallout. Apart from two soil samples with a tiny global fallout contribution, contributions of global fallout radiocesium in other soil samples were observed to be 0.338%-52.6%. The obtained Cs-135/Cs-137 database will be useful for its application as a geochemical tracer in the future. |
| 書誌情報 |
SCIENTIFIC REPORTS
巻 6,
p. 24119,
発行日 2016-04-07
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2045-2322 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1038/srep24119 |
| 著者版フラグ |
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出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 資源タイプ |
|
|
値 |
Article |
srep24119 (918.6 kB)
