Spatial distribution of radionuclides in seabed sediments off Ibaraki coast after the Fukushima Daiichi Nuclear Power Plant accident

Nagaoka, Mika ; Yokoyama, Hiroya; Fujita, Hiroki; Nakano, Masanao ; Watanabe, Hitoshi; Sumiya, Shuichi

Various kinds of radionuclides were released into the atmosphere and the sea from the Fukushima Daiichi Nuclear Power Plant on Tokyo Electric Power Co. (TEPCO) by the accident and then reached around our laboratories. Therefore the accident influence on our environment was investigated to measure the concentrations of cesium-134 ( $^{134}$ Cs), cesium-137 $^{137}$ Cs, strontium-90 ( $^{90}$ Sr) and plutonium isotopes in seabed sediments. The values for $^{137}$ Cs ranged from 6.1 to 300 Bq/kg (dry wt) and the ratio of $^{134}$ Cs / $^{137}$ Cs ranged from 0.48 to 0.77. The highest point of $^{137}$ Cs concentration was observed at the northernmost station near Kitaibaraki City and the concentration was similar to report by MEXT.

Language	:	English
Journal	:	Journal of Radioanalytical and Nuclear Chemistry
Volume	:	303
Number	:	2
Pages	:	p.1305 - 1308
Publication Year/Month	:	2015/02
Meeting title	:	5th Asia-Pacific Symposium on Radiochemistry (APSORC '13)
Held date	:	2013/09
Location (city)	:	Kanazawa
Location (country)	:	Japan
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1007/s10967-014-3633-9
DOI for research data	:
Keywords	:	福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident
Research Facility	:
Press Release	:
Article of JAEA R&D Review	:	Investigation of the Concentrations of Radionuclides in Seabed Sediments; The Spatial Distribution of Radionuclides in Seabed Sediments off the Ibaraki Coast[/]
Cooperating Institute	:

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Registration No. : BB20130018
JAEA Abstracts No. : 43000377
Paper Submission No. : 15515

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