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Internal dosimetry for continuous chronic intake of caesium-137 in cedar pollen after the Fukushima Daiichi Nuclear Power Plant accident

福島第一原子力発電所事故後のスギ花粉中caesium-137慢性摂取による内部被ばく評価

木名瀬 栄   ; 木村 仁宣 ; 波戸 真治*

Kinase, Sakae; Kimura, Masanori; Hato, Shinji*

Internal dose assessments for chronic intake of caesium-137 in cedar pollen were carried out for adult residents in Fukushima, Ibaraki and Tokyo. Committed effective doses, retention and excretion functions for caesium-137 were evaluated using DSYS-chronic code. The observation period was from early February to the end of May 2012. Consequently, it was found that the committed effective doses for adults in Fukushima, Ibaraki and Tokyo were 1.6-1.8$$times$$10$$^{-9}$$ Sv, 4.5$$times$$10$$^{-10}$$ Sv and 3.0$$times$$10$$^{-10}$$ Sv, respectively. Retention and excretion functions for caesium-137 were found to be dependence on the times of intakes.

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