Affiliation:
1. Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima-shi, Fukushima 960-1296, Japan;
Abstract
It has been 10 years since the accident at Fukushima Daiichi nuclear power plant in 2011. Large quantities of 131I, 134Cs, and 137Cs were released into the environment, and 80% of 137Cs still remains. In addition to the decrease by attenuation, the transfer of 137Cs to plants, animals, and humans is decreasing due to movement and changing fractions with elapsed time. The activity concentration of 137Cs in the atmosphere has decreased drastically, and the internal radiation dose due to inhalation is negligible. The activity concentration of 137Cs in agricultural plants is decreasing due to decontamination of soil, application of potassium, and lower levels in irrigation water. The activity concentration of 137Cs in wild animals is decreasing, and shows seasonal variation in wild boars. The activity concentration of 137Cs in offshore seawater has decreased to 0.01 Bq l−1. Therefore, the radiation dose is <1 mSv of the additional radiation dose.
Subject
Public Health, Environmental and Occupational Health,Radiology, Nuclear Medicine and imaging,Radiological and Ultrasound Technology
Reference25 articles.
1. Preliminary Estimation of Release Amounts of131I and137Cs Accidentally Discharged from the Fukushima Daiichi Nuclear Power Plant into the Atmosphere
2. Fukushima Prefecture, 2000. Monitoring of Wild Animals. Fukushima: Fukushima Prefecture. Available at: https://www.pref.fukushima.lg.jp/site/portal/wildlife-radiationmonitoring1.html (last accessed 29 March 2021) [in Japanese].
3. IAEA, 2020. Environmental Transfer of Radionuclides in Japan Following the Accident at the Fukushima Daiichi Nuclear Power Plant. IAEA-TECDOC-1927. International Atomic Energy Agency, Vienna.
4. Concentration of 137Cs in atmospheric coarse and fine particles collected in Fukushima Prefecture
5. Regression model analysis of the decreasing trend of cesium-137 concentration in the atmosphere since the Fukushima accident
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