日本海沿岸地区海产品中来自福岛第一核电站的放射性铯含量较低（2012 - 2017年）
Low levels of Fukushima Dai-ichi NPP-derived radiocesium in marine products from coastal areas in the Sea of Japan (2012-2017).
作者信息
Inoue Mutsuo, Yamashita Shiori, Takehara Ryosei, Miki Shizuho, Nagao Seiya
机构信息
Low Level Radioactivity Laboratory, Kanazawa University, Wake O-24, Nomi, Ishikawa 923-1224, Japan.
Low Level Radioactivity Laboratory, Kanazawa University, Wake O-24, Nomi, Ishikawa 923-1224, Japan.
出版信息
Appl Radiat Isot. 2019 Mar;145:187-192. doi: 10.1016/j.apradiso.2018.12.029. Epub 2018 Dec 28.
Radiocesium concentrations in marine biota in coastal areas of the Sea of Japan were < ~0.005-0.02 Bq/kg-wet and ~0.01-0.18 Bq/kg-wet for Cs and Cs, respectively (2012-2017). The biota-seawater concentration factors were ~25-100, which approximately agreed with those of Cs recorded before FDNPP accident. The low levels of Cs in marine biota were likely taken up from ambient seawaters. The total of radiocesium concentrations is now equivalent to that in the 1990s based on the ambient water data.
日本海沿海地区海洋生物群中的放射性铯浓度，2012 - 2017年期间，¹³⁷Cs和¹³⁴Cs分别<~0.005 - 0.02贝可勒尔/千克湿重和约0.01 - 0.18贝可勒尔/千克湿重。生物群与海水的浓度因子约为25 - 100，这与福岛第一核电站事故前记录的¹³⁷Cs浓度因子大致相符。海洋生物群中¹³⁴Cs的低水平可能是从周围海水中摄取的。根据环境水数据，目前放射性铯浓度的总和与20世纪90年代相当。
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