Radioactive Contamination of Rice in Japan-with Reference to Sr-90 and Cs-137 Content in Rice until 1962-

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概要

• 論文の詳細を見る

• In Japan, Sr-90 in brown rice showed two peaks at October 1959 and October 1962, whereas Sr-90 in polished rice showed almost constant level, and quite less contamination. Cs-137 contamination was roughly 10 times of that of Sr-90 in polished rice. This ratio is higher than that of fall-out itself, which has been estimated as around 3. A discussion was made on the mechanisms, which can be important factors to give rise such a high Cs-137 contamination of polished rice: characteristic effect of NH^+_4 ion on the liberation of Cs^+ ion from flooded rice soil, rate of absorption of Cs and Sr by plant roots as well as plant body surfaces, and rate of translocation of Cs and Sr in plants.

• 日本放射線影響学会の論文

著者

• 小平 潔

  National Institute Of Agricultural Sciences

関連論文

• Cesium-137 in Japanese Soil and Rice
• Cesium-137 in Japanese People and Diet Feb.1960-May 1962
• Japanese Dietary Habits and the Fall-out Problem
• Radioactive Contamination of Rice in Japan-with Reference to Sr-90 and Cs-137 Content in Rice until 1962-

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