著者
Hiromi NAKANISHI Atsushi MORI Kouki TAKEDA Houdo TANAKA Natsuko KOBAYASHI Keitaro TANOI Takashi YAMAKAWA Satoshi MORI
出版者
日本学士院
雑誌
Proceedings of the Japan Academy, Series B (ISSN:03862208)
巻号頁・発行日
vol.91, no.4, pp.160-174, 2015-04-10 (Released:2015-04-10)
参考文献数
34
被引用文献数
3 or 0

Six months after the explosion of TEPCO’s Fukushima Dai-ichi nuclear power plant, radioactive silver (110mAg), was detected in concentrations of 3754 Bq/kg in Nephila clavata (the orb-web spider; Joro-gumo in Japanese) collected at Nimaibashi, Iitate village in Fukushima Prefecture, whereas 110mAg in the soil was 43.1 Bq/kg. A survey of 35 faunal species in the terrestrial environment during the 3.5 years after the accident showed that most of Anthropoda had two orders higher 110mAg in their tissues than soils, although silver is not an essential element for their life. However, tracing of the activity of 110mAg detected in spider Atypus karschi collected regularly at a fixed location showed that it declined much faster than the physical half-life. These results suggest that 110mAg was at once biologically concentrated by faunal species, especially Arthropoda, through food chain. The factors affecting the subsequent rapid decline of 110mAg concentration in faunal species are discussed.

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Discovery of radioactive silver in spiders and other fauna in the terrestrial environment after Fukushima Read 結摩新聞 http://t.co/tw6rFjxJkP
放射線像の著者、森敏さんの論文 https://t.co/vFsqtxLCi3 福島原発由来の放射性銀がクモなどで見つかる。土を縦切りしてオートラジオグラフィーをとると、上から2cmくらいまで汚染されてる(浪江町の林の土)。 http://t.co/MyyAfy3V4I
@sinwanohate: 福島のクモ(ジョロウグモなど)から放射性銀((110m)Ag)検出(数千Bq/kg)。(東大など英語論文) https://t.co/90SgOakyjQ 図Aは汚染された個体、Bは非汚染個体の放射線像。 http://t.co/nXQ41xSCos
Discovery of radioactive silver (110mAg) in spiders and other fauna in the terrestrial... http://t.co/K38288xFTF
"Discovery of radioactive silver (110mAg) in spiders and other fauna in the terrestrial environment after the... http://t.co/O0BVd2IGGT
"Discovery of radioactive silver (110mAg) in spiders and other fauna in the terrestrial environment after the... http://t.co/J59hoZbTtj
福島のクモ(ジョロウグモなど)から放射性銀((110m)Ag)が検出された(数千Bq/kg)。(東大などからの英語論文) https://t.co/vFsqtxLCi3 図Aは汚染された個体、Bは汚染されていない個体の放射線像。 http://t.co/dGQ2yrhFVv

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