Document Detail


239 + 240Pu and 137Cs concentrations in fish, cephalopods, crustaceans, shellfish, and algae collected around the Japanese coast in the early 1990s.
MedLine Citation:
PMID:  10570839     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Marine organisms, i.e. fish, cephalopods, crustaceans, shellfish, and algae, were collected in the early 1990s along the Sea of Japan coast and the Japanese Pacific coast and analyzed for their 239 + 240Pu and 137Cs concentrations. The 239 + 240Pu concentrations in muscle of fish were below 0.4 mBq/kg wet wt. and the lowest among the analyzed marine organisms. Most 137Cs concentrations in muscle of fish ranged from 100 to 300 mBq/kg wet wt. Higher concentrations of 239 + 240Pu, ranging from 1.6 to 5.7 mBq/kg wet wt., were observed in viscera of cephalopods than in their muscle. The 239 + 240Pu concentrations in whole soft tissues of bivalves varied approximately one order of magnitude from 0.8 to 6.1 mBq/kg wet wt., while 137Cs concentrations had little variation, being approximately 60 mBq/kg wet wt. The 239 + 240Pu concentrations in algae had a wide variation, ranging from 1.7 to 42.3 mBq/kg wet wt., and were higher than those of the other marine organisms. No statistically significant difference in mean concentrations of 239 + 240Pu was detected among the whole soft tissues of bivalves, viscera of cephalopods and crustaceans, and whole bodies of cephalopods and crustaceans within the 95% confidence limit. The mean concentrations of 137Cs became higher in the order, cephalopods and crustaceans and bivalves, algae, viscera of fish, muscles of fish. The mean concentrations of 239 + 240Pu were comparable for algae collected along the Japan Sea coast and the Pacific coast. Furthermore, the difference in mean concentrations of 137Cs in algae between the Japan Sea coast and the Pacific coast was not statistically significant within the 95% confidence limit. These results can be considered to indicate no definite influence from radioactive dumping into the Japan Sea by the former USSR and Russia with respect to radioactive pollution of marine organisms collected along the Japanese coast.
Authors:
M Yamada; T Aono; S Hirano
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Science of the total environment     Volume:  239     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  1999 Oct 
Date Detail:
Created Date:  2000-01-13     Completed Date:  2000-01-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  131-42     Citation Subset:  IM    
Affiliation:
Geochemical Research Section, National Institute of Radiological Sciences, Ibaraki, Japan. m_yamada@nirs.go.jp
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MeSH Terms
Descriptor/Qualifier:
Algae / chemistry*
Animals
Cesium Radioisotopes / analysis
Crustacea / chemistry*
Environmental Monitoring
Fishes*
Japan
Mollusca / chemistry
Oceans and Seas
Pacific Ocean
Plutonium / analysis
Radioisotopes / analysis*
Shellfish*
Water Pollutants, Radioactive / analysis*
Chemical
Reg. No./Substance:
0/Cesium Radioisotopes; 0/Radioisotopes; 0/Water Pollutants, Radioactive; 7440-07-5/Plutonium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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