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Omura, Yoshihito*; Matsukura, Kimiyo*; Abe, Junichi*; Hosaka, Kentaro*; Tamaoki, Masanori*; Dohi, Terumi; Kakishima, Makoto*; Seaward, M. R. D.*
Journal of Environmental Radioactivity, 141, p.38 - 43, 2015/03
Times Cited Count:12 Percentile:34.88(Environmental Sciences)Cs concentrations in ten species of foliose lichens collected within Tsukuba-city in August 2013 ranged from 1.7 to 35 kBq/kg. The relationships between Cs in two dominant species, Dirinaria applanata and Physcia orientalis, and the air dose rate (Sv/h) at the sampling sites were investigated. Cs in P. orientalis measured about 1 year after the Fukushima nuclear accident was correlated (r=0.80) more closely with the air dose rate than those measured after about 2 years (r=0.65), possibly demonstrating its continued value as a biomonitor to reflect ambient fall-out levels. In contrast, those of Dirinaria applanata were not correlated with the air dose rate in either year.
Tachiwana, Hiroaki*; Arimura, Yasuhiro*; Matsumoto, Ryohei*; Takizawa, Yoshimasa*; Hori, Tetsuya*; Matsumoto, Atsushi; Oda, Takashi*; Sato, Mamoru*; Kono, Hidetoshi; Fukagawa, Tatsuo*; et al.
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