Department of Nuclear Physics and Biophysics, Comenius University, Bratislava, Slovakia.
Environ Sci Technol. 2012 Sep 18;46(18):10356-63. doi: 10.1021/es301997c. Epub 2012 Aug 27.
The impact of the Fukushima-derived radiostrontium ((90)Sr and (89)Sr) on the western North Pacific Ocean has not been well established, although (90)Sr concentrations recorded in surface seawater offshore of the damaged Fukushima Dai-ichi nuclear power plant were in some areas comparable to or even higher than (as those in December 2011 with 400 kBq m(-3)(90)Sr) the (137)Cs levels. The total amount of (90)Sr released to the marine environment in the form of highly radioactive wastewater could reach about 1 PBq. Long-term series (1960-2010) of (90)Sr concentration measurements in subtropical surface waters of the western North Pacific indicated that its concentration has been decreasing gradually with a half-life of 14 y. The pre-Fukushima (90)Sr levels in surface waters, including coastal waters near Fukushima, were estimated to be 1 Bq m(-3). To better assess the impact of about 4-5 orders of magnitude increased radiostrontium levels on the marine environment, more detail measurements in seawater and biota of the western North Pacific are required.
福岛放射性锶（(90)Sr 和 (89)Sr）对西北太平洋的影响尚未得到充分证实，尽管在受损的福岛第一核电站附近海域的表层海水中记录到的 (90)Sr 浓度在某些地区与（2011 年 12 月时）（137）Cs 水平相当，甚至更高。以高放射性废水形式排放到海洋环境中的（90）Sr 总量可能达到约 1 PBq。西北太平洋亚热带表层海水的长期系列（1960-2010 年）的 (90)Sr 浓度测量表明，其浓度随着半衰期为 14 年逐渐降低。福岛核事故前，包括福岛附近海域在内的表层海水中的（90）Sr 水平估计为 1 Bq m(-3)。为了更好地评估约 4-5 个数量级增加的放射性锶水平对海洋环境的影响，需要对西北太平洋的海水和生物群进行更详细的测量。
