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

Fifty-one seabed sediments were collected to estimate the influence of the Fukushima Daiichi Nuclear Power Plant accident on the area offshore from Ibaraki. The 134 Cs and 137 Cs radioactivity levels were 3.8–206.7 and 6.1–296 Bq/kg (dry wt), respectively, and the activity ratios of 134 Cs/ 137 Cs w...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2015-02, Vol.303 (2), p.1305-1308
Main Authors: Nagaoka, M., Yokoyama, H., Fujita, H., Nakano, M., Watanabe, H., Sumiya, S.
Format: Article
Language:English
Subjects:
Accidents
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Drying
Hadrons
Heavy Ions
Inorganic Chemistry
Ionizing radiation
Measurement
Nuclear accidents
Nuclear Chemistry
Nuclear energy
Nuclear fuel cycle
Nuclear Physics
Nuclear power generation
Nuclear power plants
Ocean bottom
Physical Chemistry
Radiation
Radiation, Background
Radioactivity
Sea beds
Sediments
Sediments (Geology)
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Summary:Fifty-one seabed sediments were collected to estimate the influence of the Fukushima Daiichi Nuclear Power Plant accident on the area offshore from Ibaraki. The 134 Cs and 137 Cs radioactivity levels were 3.8–206.7 and 6.1–296 Bq/kg (dry wt), respectively, and the activity ratios of 134 Cs/ 137 Cs were 0.48–0.77. The 90 Sr and 239,240 Pu activity levels were ND–0.26 and 0.170–0.78 Bq/kg (dry wt), respectively. The ratios of 238 Pu/ 239,240 Pu activity were 0.014–0.019. The 90 Sr radioactivity was increased by the accident and Pu isotopes radioactivity was not changed.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-014-3633-9