Transfer Factor of 137Cs from Deposition to Total-diet: P23 for Assessing Effective Dose Equivalent Commitment of the General Public through Ingestion Pathways by the UNSCEAR's Method. (I). Application of the Radioactivity Survey Data to Preparation of th

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概要

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• The dose assessment study following the Chernobyl nuclear accident by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) was reviewed. A discussion on the advantageous feature of its methodology was made with emphasis on the simplicity in the determination of effective dose equivalent commitment through the ingestion pathway. The transfer factor of 137Cs from deposition to total diet: P23 which was the key parameter in the Committee's calculation model was derived by a regression analysis of the radioactivity survey data reported for Tokyo and Hokkaido. The effective dose equivalent commitment was given as 15 and 23μSv respectively for the population in Tokyo and Hokkaido as a result of the unit deposition density (1kBq/km2) of 137Cs. The contribution of the first year transfer to the total was significantly less in both cases than those reported for European countries and the United States, presumably owing to less consumption of dairy products and meat which could reflect radioactive contamination in the environment shortly after the release.

• 日本保健物理学会の論文

著者

• 渡部 輝久

  財団法人環境科学技術研究所

関連論文

• Transfer Factor of 137Cs from Deposition to Total-diet: P23 for Assessing Effective Dose Equivalent Commitment of the General Public through Ingestion Pathways by the UNSCEAR's Method. (I). Application of the Radioactivity Survey Data to Preparation of th

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