Mezaki Yoshihiro, Kato Shigeaki, Nishikawa Osamu, Takashima Isao, Tsubokura Masaharu, Minowa Haruka, Asakura Tadashi, Matsuura Tomokazu, Senoo Haruki
Department of Laboratory Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Center for Regional Cooperation, Iwaki Meisei University, Fukushima, Japan.
Heliyon. 2019 Dec 24;5(12):e03051. doi: 10.1016/j.heliyon.2019.e03051. eCollection 2019 Dec.
An earthquake struck the eastern part of Japan on March 11, 2011. The Fukushima Daiichi nuclear power plant was severely damaged by the earthquake and subsequent tsunami, leading to the emission of large amounts of radioactive pollutants, including Cs and Cs, into the environment. From August 23 to September 1 in 2011, and from August 27 to September 4 in 2013, we collected samples of animals, plants, fungi and lichens from Svalbard, Norway and measured the radioactivity of Cs and Cs contained in the samples. Though no radioactivity of Cs, which has a half-life of approximately 2 years, was observed, radioactivity of Cs, which has a half-life of approximately 30 years, was observed in some samples of lichens and fungi. We failed to detect the radioactivity of Cs in any of the samples we collected, therefore, it was impossible to say clearly that the radioactivity is derived from Fukushima or not. Nevertheless, the radioactivity data documented in this report are a useful reference for the future surveys of radioactivity within the Arctic.
2011年3月11日，日本东部发生地震。福岛第一核电站因地震及随后的海啸受到严重破坏，导致大量放射性污染物，包括铯-134和铯-137，排放到环境中。在2011年8月23日至9月1日以及2013年8月27日至9月4日期间，我们从挪威斯瓦尔巴群岛采集了动物、植物、真菌和地衣样本，并测量了样本中所含铯-134和铯-137的放射性。尽管未观测到半衰期约为2年的铯-134的放射性，但在一些地衣和真菌样本中观测到了半衰期约为30年的铯-137的放射性。我们在采集的任何样本中均未检测到铯-134的放射性，因此，无法明确断定该放射性是否源自福岛。尽管如此，本报告记录的放射性数据对未来北极地区的放射性调查而言是一份有用的参考资料。
