Distribution and risk assessment of radionuclides released by Fukushima nuclear accident at the northwest Pacific

作者：Yu Wen^*; He Jianhua; Lin Wuhui; Li Yiliang; Men Wu; Wang Fenfen; Huang Jiang

来源：Journal of Environmental Radioactivity, 2015, 142: 54-61.

DOI：10.1016/j.jenvrad.2015.01.005

• Marine radioactivity
• Radiological risk assessment
• Squid
• Fukushima Dai-ichi nuclear power plant accident

In order to understand the impact of Fukushima Nuclear Accident (FNA) on the marine environment, seawater and a composite squid (Ommastrephe bartrami) sample were collected on the monitoring cruise XT01 during June 16 July 4, 2011. The concentration levels of Cesium-134, Cesium-137, Strontium-90, Silver-110m, Cobalt-58 and Cobalt-60 were measured both for the seawater and squid samples. The elevated activity levels of Cesium-134 and Cesium-137 were found in the sampling area. Cesium-134 and Silver-110m, which were usually undetectable before FNA, were also found in the squid sample, with the activity levels of 1.65 +/- 0.13 Bq/kg-wet and 0.07 +/- 0.01 Bq/kg-wet, respectively. The radiological assessment result showed that the radioactive release from the FNA would not have a significant adverse effect on marine biota at the population level.

• 出版日期2015-4
• 单位国家海洋局第三海洋研究所