Journal Article Monitoring inspection for radiocesium in agricultural, livestock, forestry and fishery products in Fukushima prefecture

Nihei, Naoto  ,  Tanoi, Keitaro  ,  Nakanishi, Tomoko M.

pp.1 - 4 , 2015-09-11 , Springer Netherlands
We selected and re-categorized the monitoring data opened by the government of Fukushima prefecture focusing on the radiocesium concentrations in four agricultural products, from the data on 90,000 samples analyzed during 3 years. Radioactivity was found to be high during 3 months after the accident because of direct fallout. The internal exposure in the area with the highest contamination area of rice during the first 3 months was calculated and estimated to be 0.75 mSv year−1. The radioactivity in foods products rapidly decreased after 3 months later, but in the case of some forestry products and fish, there are still some products in which radioactivity was above the regulated value, 100 Bq kg−1.

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