Concentration Factors for Cs-137 in Marine Algae from Japanese Coastal Waters

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概要

• 論文の詳細を見る

• Concentration factors (CF: Bq, kg^<-1> in wet algae/Bq, kg^<-1> in filtered seawater) for Cs-137 in Japanese coastal algae, were investigated during 1984-1990. Cs-137/Cs(stable) atom ratios were also examined to clarify the distribution equilibrium of Cs-137 in marine algae and sea water. The CFs in marine algae were within the range of 5.4-92, and the geometric mean of CF was 28 ± 2 (standard error) in Japanese coastal species. The CFs in edible species were within the range of 5.4-67, and the gemetric mean of CF was 26±4 (standard error). The values of Cs-137/Cs atom ratios in marine algae and sea water indicated that Cs-137 reached an equilibrium state in partition between algae and sea water. Therefore, the CF value obtained in the present study can be regarded as an equilibrated value. Our results showed that the CF for Cs-137 in Japanese coastal algae were consistent with the Japanese guideline CFs, but were smaller than the recommended value by IAEA.

• 日本放射線影響学会の論文

著者

• 立田 穣

  電力中央研究所

• 立田 穣

  電力中央研究所環境科学部

• Koyanagi Taku

  Lnstitute For Environmental Sciences

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• Concentration Factors for Cs-137 in Marine Algae from Japanese Coastal Waters
• ムラサキイガイ・ムラサキインコガイによる放射性核種のとりこみ〔英文〕

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