Mobility of radioactive cesium in soil originated from the Fukushima Daiichi nuclear disaster: application of extraction experiments

2014 ◽  
Vol 304 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Yoshikazu Kikawada ◽  
Masaaki Hirose ◽  
Atsushi Tsukamoto ◽  
Ko Nakamachi ◽  
Takao Oi ◽  
...  
PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1427 ◽  
Author(s):  
Kanami Nakashima ◽  
Makiko Orita ◽  
Naoko Fukuda ◽  
Yasuyuki Taira ◽  
Naomi Hayashida ◽  
...  

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.


Author(s):  
Noriko Hikosaka Behling ◽  
Thomas G. Behling ◽  
Mark C. Williams ◽  
Shunsuke Managi

2012 ◽  
Vol 27 (2) ◽  
pp. 213-215 ◽  
Author(s):  
Takashi Nagata ◽  
Yoshinari Kimura ◽  
Masami Ishii

AbstractThe Great East Japan Earthquake occurred on March 11, 2011. In the first 10 days after the event, information about radiation risks from the Fukushima Daiichi nuclear plant was unavailable, and the disaster response, including deployment of disaster teams, was delayed. Beginning on March 17, 2011, the Japan Medical Association used a geographic information system (GIS) to visualize the risk of radiation exposure in Fukushima. This information facilitated the decision to deploy disaster medical response teams on March 18, 2011.Nagata T, Kimura Y, Ishii M. Use of a geographic information system (GIS) in the medical response to the Fukushima nuclear disaster in Japan. Prehosp Disaster Med. 2012;27(2):1-3.


2021 ◽  
Author(s):  
Ichiro Tanaka ◽  
Atsushi Yamaguchi ◽  
Kenji Kikuchi ◽  
Nobuo Niimura ◽  
Yume Saeki ◽  
...  

<p>The radioactive cesium (<sup>134</sup>Cs and <sup>137</sup>Cs), which originated from the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, has remained in the soil and on plants as water-insoluble microparticles (termed as CsMPs) to some extent, and maintained relatively high radioactivity levels in the district. However, it has been reported that the radioactive Cs has been absorbed by plants. To interpret this phenomenon, the authors investigated CsMPs to determine if they become soluble during filtration and dialysis experiments. Moreover, other physical properties, such as mechanical properties and thermal stability, were observed during the course of the relevant experiments. These properties can be obtained by using carbonized charcoal litter with CsMPs. And simple and economic decontamination trials of the soil were performed by sieving after drying and roughly crushing.</p>


Chemosphere ◽  
2020 ◽  
Vol 241 ◽  
pp. 125019 ◽  
Author(s):  
Ryohei Ikehara ◽  
Kazuya Morooka ◽  
Mizuki Suetake ◽  
Tatsuki Komiya ◽  
Eitaro Kurihara ◽  
...  

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