Radiocaesium activity concentrations in parmelioid lichens within a 60 km radius of the Fukushima Dai-ichi Nuclear Power Plant

Radiocaesium activity concentrations (134Cs and 137Cs) were measured in parmelioid lichens collected within the Fukushima Prefecture approximately 2 y after the Fukushima Dai-ichi Nuclear Power Plant accident. A total of 44 samples consisting of nine species were collected at 16 points within a 60 k...

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Bibliographic Details
Published in:Journal of environmental radioactivity 2015-08, Vol.146, p.125-133
Main Authors: Dohi, Terumi, Ohmura, Yoshihito, Kashiwadani, Hiroyuki, Fujiwara, Kenso, Sakamoto, Yoshiaki, Iijima, Kazuki
Format: Article
Language:English
Subjects:
Biomonitor
Cesium Radioisotopes - analysis
Cesium Radioisotopes - metabolism
Endangered Species
Fallout
Flavoparmelia caperata
Fukushima
Fukushima Nuclear Accident
Japan
Nuclear Power Plants
Parmeliaceae - chemistry
Parmeliaceae - metabolism
Parmotrema clavuliferum
Radiation Monitoring
Radioactive Fallout - analysis
Radiocesium
Soil Pollutants, Radioactive - analysis
Soil Pollutants, Radioactive - metabolism
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Summary:Radiocaesium activity concentrations (134Cs and 137Cs) were measured in parmelioid lichens collected within the Fukushima Prefecture approximately 2 y after the Fukushima Dai-ichi Nuclear Power Plant accident. A total of 44 samples consisting of nine species were collected at 16 points within a 60 km radius of the Fukushima Dai-ichi Nuclear Power Plant. The activity concentration of 134Cs ranged from 4.6 to 1000 kBq kg−1 and for 137Cs ranged from 7.6 to 1740 kBq kg−1. A significant positive correlation was found between the 137Cs activity concentration in lichens and the 137Cs deposition density on soil (n = 44), based on the calculated Spearman's rank correlation coefficients as r = 0.90 (P 
ISSN:0265-931X
1879-1700
DOI:10.1016/j.jenvrad.2015.04.013