Overview of active cesium contamination of freshwater fish in Fukushima and Eastern Japan.

Overview of active cesium contamination of freshwater fish in Fukushima and Eastern Japan.
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DOI:
10.1038/srep01742
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Kubo, Hideya
Kubo, Hideya
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Mizuno, Toshiaki;Kubo, Hideya

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本文根据日本政府水产厅2011年公布的数据,对福岛和日本东部淡水鱼的放射性铯137(准铯137包括铯134)污染情况进行了综述。在福岛核电站的北部和西部地区,淡水鱼受到了严重污染。例如,在电厂西北20-40公里处的马诺河,Ayu (Plecoglossus altivelis)的活性铯(准铯137)污染平均值为2,657 Bq/kg。在该工厂以西70-150公里的会津次区域的Agano河流域观察到生物蓄积。肉食性鲑科的活性铯(准铯137)污染比草食性阿玉高约2倍。在整个日本东部观测到Ayu的活性铯(准铯137)污染程度。甚至在距核电站西南400公里的静冈县也发现了一定程度的污染。
This paper focuses on an overview of radioactive cesium 137 (quasi-Cs137 included Cs134) contamination of freshwater fish in Fukushima and eastern Japan based on the data published by the Fisheries Agency of the Japanese Government in 2011. In the area north and west of the Fukushima Nuclear plant, freshwater fish have been highly contaminated. For example, the mean of active cesium (quasi-Cs137) contamination of Ayu (Plecoglossus altivelis) is 2,657 Bq/kg at Mano River, 20–40 km north-west from the plant. Bioaccumulation is observed in the Agano river basin in Aizu sub-region, 70–150 km west from the plant. The active cesium (quasi-Cs137) contamination of carnivorous Salmondae is around 2 times higher than herbivorous Ayu. The extent of active cesium (quasi-Cs137) contamination of Ayu is observed in the entire eastern Japan. The some level of the contamination is recognized even in Shizuoka prefecture, 400 km south-west from the plant.
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