Author:
M. Yamada National Institute of radiological Sciences Research Center for Radioecology Isozaki 3609, Hitachinaka 311-12 Ibaraki Japan

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Abstract  

Salmon (Oncorhynchus keta) samples were collected on the Pacific coast of Japan and analyzed for their239+240Pu and137Cs concentrations in six places, i.e., muscle, viscera, gill, gonad, skin and spine. The239+240Pu concentrations in muscle ranged from 0.07 to 0.14 mBq/kg (wet) and had the lowest value among the six regions. The mean239+240Pu concentrations in viscera, gonad and spine were more than 1 mBq/kg (wet_ while those in muscle and skin were one order of magnitude lower. The largest amounts of239+240Pu were accumulated in gonad. The239+240Pu/137Cs activity ratios in all positions were lower than that of the global fallout ratio of 0.022, suggesting that137Cs could be accumulated with greater ease than239+240Pu in all positions and ratios of uptake differed remarkably from position to position. The total accumulations of239+240Pu and137Cs in salmon were 1.32 and 328 mBq/individual, respectively.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)