| Title | Radiocesium concentrations in wild mushrooms after the accident at the Fukushima Daiichi Nuclear Power Station: Follow-up study in Kawauchi village |
| Publication Type | Journal Article |
| Authors | Orita, Makiko, Kanami Nakashima, Yasuyuki Taira, Toshiki Fukuda, Yoshiko Fukushima, Takashi Kudo, Yuko Endo, Shunichi Yamashita, and Noboru Takamura |
| Journal | Scientific Reports |
| Abstract | Since the accident at the Chernobyl Nuclear Power Plant, it has become well known that radiocesium tends to concentrate in wild mushrooms. During the recovery process after the accident at the Fukushima Daiichi Nuclear Power Station (FDNPS), it is important to perform follow-up measurements of the activity concentrations of radiocesium in mushrooms. We evaluated the activity concentrations of the detected artificial radionuclides (radiocesium) in wild mushrooms collected from Kawauchi village, which is within 30 km of the FDNPS, in 2015, four years after the accident. We found that
the radiocesium was determined in 147 of 159 mushroom samples (92.4%). Based on the average mushroom consumption of Japanese citizens (6.28 kg per year), we calculated committed effective doses ranging from <0.001 to 0.6 mSv. Although committed effective doses are relatively limited, even if residents have consumed mushrooms several times, continuous monitoring of the radiocesium in mushrooms in Fukushima is needed for sustained recovery from the nuclear disaster. |
| Notes | 'Annotations(1/12/2024, 1:24:29 PM)\n“Recently, we evaluated the radiocesium in wild mushroom samples collected in Kawauchi village and found that radiocesium exceeding 100Bq/kg was detected in 125 of 154 mushroom samples (81.2%) collected in 2013, two years after the FDNPS accident15. In our current study, radiocesium concentrations were detected in 123 of the 159 mushroom samples (77.4%) collected in 2015, four years after the accident. These results suggest that the portion of mushroom samples with radiocesium concentrations above 100Bq/kg did not dramatically change in Fukushima over two years. In accordance with the shorter half-life of 134Cs, the activity concentrations of 134Cs (half-life=2.1 years) in 2015 were significantly lower than those found in 2014, whereas there was no difference in the activity concentrations of 137Cs (half-life=30.1 years) between 2014 and 2015” (Orita et al., 2017, p. 3)“Further, we did not evaluate the potential loss of radiocesium upon cooking in mushrooms. The influence of eating habits, including cooking methods, must be considered” (Orita et al., 2017, p. 5)(Orita et al., 2017, p. 5) Refer to Baeza (2014) for good info on this\n\n - AlexanderSE'
'Read\n - AlexanderSE'
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| DOI | 10.1038/s41598-017-05963-0 |
| Short Title | Radiocesium in Wild Mushrooms |
