【摘要】 为进一步认识日本福岛核事故对海洋生物体内放射性水平及公众辐射剂量的影响,本研究对日本福岛核事故后采集自西北太平洋的巴特柔鱼(Ommastrephes bartramii)器官组织中总α、总β放射性活度进行了测量分析,结果表明:巴特柔鱼各内脏器官中总α和总β的活度浓度明显高于其他软组织,其中以肝脏最为明显;巴特柔鱼各内脏器官的总β的活度浓度明显高于总α活度浓度。除此之外,利用国际上公开发布的海洋环境核素活度浓度水平,对日本近岸以及西太平洋公海的巴特柔鱼进行了3个时间段的辐射剂量评估。评估结果表明,根据公开数据,日本近岸受影响严重且时限较长,西太平洋公海区域受影响程度不大,时限亦不长。更多还原

【Abstract】 For further understanding the impacts of the accident of Japan’s Fukushima-Daii-Chi Nuclear Power Plant on the radioactivity levels of marine organisms and the public radiation dose. The radioactivities of gross alpha and gross beta from the organs and tissues of Ommastrephes bartramii collected from the northwest Pacific Ocean after the accident were measured and analyzed. The results showed that the activity concentrations of gross alpha and gross beta in the organs, particularly the liver, of the O. bartramii were significantly higher than those of other soft tissues. The activity concentration of gross beta in the O. bartramii was significantly higher than that of gross alpha activity. In addition, the radiation dose of the O. bartramii was evaluated during three time periods in the waters adjacent to Japan and in the western Pacific Ocean by using the nuclide activity concentration levels in the marine environment published internationally. The results show that according to the open data, the impacts were serious and would last for a long time in the adjacent waters of Japan while it was limited and would last for a shorter time in the far western Pacific Ocean.更多还原