Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resource, 184 Daxue Road, Xiamen 361005, China.
Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resource, 184 Daxue Road, Xiamen 361005, China.
Mar Pollut Bull. 2020 Mar;152:110900. doi: 10.1016/j.marpolbul.2020.110900. Epub 2020 Feb 17.
To understand the status of the radionuclides released during the Fukushima Dai-ichi Nuclear Power Plant accident, the Cs, Cs and Sr in the seawater in the public area of the northwest Pacific Ocean were analyzed in November-December 2012. The radioactivity of Cs, Cs and Sr decreased sharply from June 2011 to November-December 2012. The highest average values of Cs and Cs were found at a depth of 500 m, suggesting that Cs and Cs had been transported to a depth of 500 m or deeper by the end of 2012. Total inventories of 0.80 ± 0.20 pBq for Cs from the surface to a depth of 500 m and 0.07 ± 0.02 pBq for Sr from the surface to a depth of 100 m were obtained in the waters southeast of Fukushima. Cs was detectable in the Chinese exclusive economic zone, and the seawater quality was much lower than the target level for China.
为了解福岛第一核电站事故期间释放的放射性核素的状况，于 2012 年 11 月至 12 月分析了西北太平洋公共海域海水中的 Cs、Cs 和 Sr。自 2011 年 6 月以来，Cs、Cs 和 Sr 的放射性迅速下降。Cs 和 Cs 的最高平均值出现在 500m 深处，这表明到 2012 年底，Cs 和 Cs 已被输送到 500m 或更深的深度。在福岛东南水域，从表层至 500m 深处，Cs 的总活度为 0.80±0.20pBq，从表层至 100m 深处，Sr 的总活度为 0.07±0.02pBq。Cs 在我国专属经济区可检测到，海水质量远低于中国的目标水平。
