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- Title
Plutonium isotopes and Am in surface sediments off the coast of the Japanese islands before and soon after the Fukushima Dai-ichi nuclear power plant accident.
- Authors
Oikawa, S.; Watabe, T.; Takata, H.; Misonoo, J.; Kusakabe, M.
- Abstract
The concentrations of Pu, Pu and Am in the sediments at the coast of Japanese islands from 2008 to 2011 varied widely from one sampling site to another and were generally lower in sandy sediments at shallower sites, and higher in clayey sediments at deeper sites. In contrast, there seemed to be no temporal variation in the concentrations during the survey period. The Am/Pu activity ratio was relatively higher than the global fallout presumably owing to the ingrowth of Am from the ancestor, Pu originating mainly from the hydrogen bomb explosion tests in the Marshall Islands in the 1950s.
- Subjects
MARSHALL Islands; PLUTONIUM isotopes; MARINE sediments; FUKUSHIMA Nuclear Accident, Fukushima, Japan, 2011; CLAY soils
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2015, Vol 303, Issue 2, p1513
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-014-3530-2