应用生态学报2017，Vol.28Issue(9)：3071-3077,7.DOI:10.13287/j.1001-9332.201709.006
2013年北太平洋公海渔场柔鱼体内典型放射性核素分析及风险评估
Analysis of the typical radionuclides for neon flying squid of the high seas fisheries in North Pacific Ocean and risk assessment in 2013
摘要
Abstract
To understand the pollution effect of radionuclides emitted from Fukushima nuclear accident on marine organisms,we collected flying squid samples in the North Pacific Ocean (40°-44° N,145°-160° E) from August to November in 2013.Radionuclides' concentrations at different localities were analyzed by the ultra-low background high purity germanium (HPGe) γspectrometer.The result showed that nuclide specific activities of 134Cs and 110mAg were not higher than the background values,while those of 210Pb,137 Cs and 40 K were detected in all samples.Specific activity ranges of 210Pb,137 Cs and 40 K for neon flying squid were 0.99-7.60 Bq · kg-1,the mininum detection limit to 0.37 Bq · kg-1 and 46.00-107.00 Bq · kg-1,respectively.The 250-300 mm mantle length group of neon flying squid had the highest nuclide concentration of 210Pb,and the minimum concentration of 210Pb was found in the 200-250 mm and ＞400 mm groups.The 200-250 mm mantle length group had the highest nuclide concentration of 137Cs,and the 250-300 mm and 350-400 mm groups had the minimum.The 250-300 mm mantle length group had the highest nuclide concentration of 40K,and the 150-200 mm group had the minimum,and the overall distribution was much more uniform.Nuclide concentration distributions were different in different organs of neon flying squid,but all highest values were detected in innards.Risk assessment showed that the entropy values of all tested marine life value and basic value of radionuclide content in the fishing grounds of North Pacific high seas were not higher than 1,indicating there was no high risk of the radiation on fishery resources temporarily in North Pacific Ocean.The study provided the theory basis for assessment of the marine ecological environment and public health hazard resulted from Fukushima nuclear accident.关键词
福岛核事故/北太平洋公海/海洋生物/放射性核素/监测Key words
Fukushima nuclear accident/high seas in North Pacific Ocean/marine organism/radioactive nuclide/monitoring引用本文复制引用
唐峰华,张胜茂,崔雪森,王锦龙,杜金洲..2013年北太平洋公海渔场柔鱼体内典型放射性核素分析及风险评估[J].应用生态学报,2017,28(9):3071-3077,7.基金项目
本文由国家科技支撑计划项目(2013BAD13B01)和国家“863”计划项目(2012AA092303)资助 （2013BAD13B01）
This work was supported by National Science and Technology Support Program of China (2013BAD13B01) and National 863 Plan Project of China (2012AA092303). （2013BAD13B01）
