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Hokkaido University Collection of Scholarly and Academic Papers >
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Peer-reviewed Journal Articles, etc >
Aging Effect of Cs-137 Obtained from Cs-137 in the Kanto Loam Layer from the Fukushima Nuclear Power Plant Accident and in the Nishiyama Loam Layer from the Nagasaki A-bomb Explosion
| Title: | Aging Effect of Cs-137 Obtained from Cs-137 in the Kanto Loam Layer from the Fukushima Nuclear Power Plant Accident and in the Nishiyama Loam Layer from the Nagasaki A-bomb Explosion |
| Authors: | Ohta, Tomoko Browse this author | | Mahara, Yasunori Browse this author | | Kubota, Takumi Browse this author | | Igarashi, Toshifumi Browse this author |
| Keywords: | Fukushima nuclear power plant accident | | cesium-137 | | Nagasaki A-bomb | | aging effect | | Kanto loam | | Nishiyama loam | | migration |
| Issue Date: | Oct-2013 |
| Publisher: | Japan soc analytical chemistry |
| Journal Title: | Analytical sciences |
| Volume: | 29 |
| Issue: | 10 |
| Start Page: | 941 |
| End Page: | 947 |
| Publisher DOI: | 10.2116/analsci.29.941 |
| Abstract: | We measured Cs-134 and Cs-137 in the surface soil of the Kanto loam in the eastern Tokyo metropolitan area and the Nishiyama loam in Nagasaki, Japan. The observed Cs-137 deposition in the Kanto loam from the Fukushima nuclear power plant (NPP) accident ranged from 4.0 to 77 kBq m(-2), which corresponds to 0.3 - 5 times of that in the Nishiyama loam. The Cs-137 retardation factor in the Kanto loam obtained seven months after the Fukusima NPP accident and in the Nishiyama loam after 36 and 38 years from the detonation of the Pu atomic bomb (A-bomb) ranged from 180 to 260 and 2000 to 10000, respectively. This difference in the retardation factors is attributed to an aging effect that corresponds to seven months and 36 to 38 years after the deposition of Cs-137 occurred on the soil minerals. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/54528 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 太田 朋子
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