Radiocesium contamination of the moss Hypnwn plumaeforme caused by the Fukushima Dai-ichi Nuclear Power Plant accident

被引:4
作者
Oguri, Emiko [1 ,2 ]
Deguchi, Hironori [1 ]
机构
[1] Hiroshima Univ, Grad Sch Sci, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan
[2] Fukushima Univ, Inst Environm Radioact, 1 Kanayagawa, Fukushima 9601296, Japan
关键词
Contamination; Fukushima Dai-ichi Nuclear Power Plant accident; Hypnum plumaeforme; Radiocesium; RADIOACTIVE FALLOUT; HEAVY-METALS; LICHENS; BRYOPHYTES; CS-137; INDICATORS; DEPOSITION; CHERNOBYL; RADIONUCLIDES; ACCUMULATION;
D O I
10.1016/j.jenvrad.2018.02.013
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
We investigated Cs-134 and Cs-137 activity concentrations in the common Japanese moss species Hypnwn plumaeforme collected from 32 sites within ca. 100 km radius of the Fukushima Dai-ichi Nuclear Power Plant. A total of 32 samples of H. plumaeforme were collected during the field surveys from November 2013 to September 2014. The maximum radiocesium activity concentrations in H. plumaeforme were 60.9 +/- 1.8 kBq kg(-1) for Cs-134 and 123 +/- 2.3 kBq kg(-1) for Cs-137. The mean value for the Cs-134/Cs-137 was 1.17 +/- 0.05, and the mean Tag value was 0.09 +/- 0.13. Positive correlations were obtained between total Cs-134 + Cs-137 activity concentrations in H. plumaeforme and the air dose rate with a correlation coefficient (r) of 0.55 (P = 0.001), and between Cs-137 activity concentration in H. plumaeforme and Cs-137 deposition density on soil with r of 0.55 (P = 0.001). These results suggest that the perennial moss species H. plumaeforme could be more suitable and useful as a qualitative indicator for the radiocesium pollution compared to vascular plants spreading over the lowlands including human habitation in Fukushima Prefecture.
引用
收藏
页码:648 / 653
页数:6
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