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

被引：22

作者：

Dohi, Terumi ^{[1
]}

Ohmura, Yoshihito ^{[2
]}

Kashiwadani, Hiroyuki ^{[1
,2
]}

Fujiwara, Kenso ^{[1
]}

Sakamoto, Yoshiaki ^{[1
]}

Iijima, Kazuki ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Sect Fukushima Res & Dev, Fukushima, Fukushima 9608031, Japan

[2] Natl Museum Nat & Sci, Dept Bot, Tsukuba, Ibaraki 3050005, Japan

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2015年 / 146卷

基金：

日本学术振兴会;

关键词：

Biomonitor; Fallout; Fukushima; Radiocesium; Flavoparmelia caperata; Parmotrema clavuliferum; VERTICAL-DISTRIBUTION; RADIONUCLIDE DISTRIBUTION; CS-137; CONCENTRATIONS; LONG-TERM; BIOMONITORS; CHERNOBYL; FALLOUT; MONITORS; RATIO; SOIL;

D O I：

10.1016/j.jenvrad.2015.04.013

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Radiocaesium activity concentrations (Cs-134 and Cs-137) 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 Cs-134 ranged from 4.6 to 1000 kBq kg(-1) and for Cs-137 ranged from 7.6 to 1740 kBq kg(-1). A significant positive correlation was found between the Cs-137 activity concentration in lichens and the Cs-137 deposition density on soil (n = 44), based on the calculated Spearman's rank correlation coefficients as r = 0.90 (P < 0.01). The two dominant species, Flavoparmelia caperata (n = 12) and Parmotrema clavuliferum (n = 11), showed strong positive correlations, for which the r values were calculated as 0.92 (P < 0.01) and 0.90 (P < 0.01) respectively. Therefore, Flavoparmelia caperata and Parmotrema clavuliferum are suggested as biomonitoring species for levels of radiocaesium fallout within the Fukushima Prefecture. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：125 / 133

页数：9

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