title: Radiocesium concentrations in wild mushrooms collected in Kawauchi Village after the accident at the Fukushima Daiichi Nuclear Power Plant.
abstract: It is well known from the experience after the 1986 accident at the Chernobyl Nuclear Power Plant that radiocesium tends to concentrate in wild mushrooms. In this study, we collected wild mushrooms from the Kawauchi Village of Fukushima Prefecture, located within 30 km of the Fukushima Daiichi Nuclear Power Plant, and evaluated their radiocesium concentrations to estimate the risk of internal radiation exposure in local residents. We found that radioactive cesium exceeding 100 Bq/kg was detected in 125 of 154 mushrooms (81.2%). We calculated committed effective doses based on 6,278 g per year (age > 20 years, 17.2 g/day), the average intake of Japanese citizens, ranging from doses of 0.11-1.60 mSv, respectively. Although committed effective doses are limited even if residents eat contaminated foods several times, we believe that comprehensive risk-communication based on the results of the radiocesium measurements of food, water, and soil is necessary for the recovery of Fukushima after this nuclear disaster.
authors.affiliation: Department of Global Health, Medicine and Welfare, Atomic Bomb Disease Institute, Nagasaki Univerity Graduate School of Biomedical Sciences , Nagasaki , Japan.
authors.forename: Kanami
authors.initials: K
authors.lastname: Nakashima
authors.affiliation: Department of Global Health, Medicine and Welfare, Atomic Bomb Disease Institute, Nagasaki Univerity Graduate School of Biomedical Sciences , Nagasaki , Japan.
authors.forename: Makiko
authors.initials: M
authors.lastname: Orita
authors.affiliation: Department of Radioisotope Medicine, Atomic Bomb Disease Institute, Nagasaki University , Nagasaki , Japan.
authors.forename: Naoko
authors.initials: N
authors.lastname: Fukuda
authors.affiliation: Nagasaki Prefecture Office, Pharmaceutical Affairs , Nagasaki , Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Taira
authors.affiliation: Division of Strategic Collaborative Research Center for Promotion of Collaborative Research on Radiation and Environment Health Effects, Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan.
authors.forename: Naomi
authors.initials: N
authors.lastname: Hayashida
authors.affiliation: Department of Radiation Biology and Protection, Atomic Bomb Disease Institute, Nagasaki University , Nagasaki , Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Matsuda
authors.affiliation: Department of Global Health, Medicine and Welfare, Atomic Bomb Disease Institute, Nagasaki Univerity Graduate School of Biomedical Sciences , Nagasaki , Japan.
authors.forename: Noboru
authors.initials: N
authors.lastname: Takamura
keywords: Chernobyl; Fukushima; Mushroom; Radiocesium; Radionuclides