秦山核电站周围海洋生物放射性水平调查  

Radioactivity in marine organisms around Qinshan Nuclear Power Plant

作　　者：王天姿 涂彧[1] 万骏[1] WANG Tianzi;TU Yu;WAN Jun(State Key Laboratory of Radiation Medicine and Protection,Soochow University,Suzhou 215024 China)

机构地区：[1]苏州大学放射医学与防护国家重点实验室,江苏苏州215024

出　　处：《中国辐射卫生》2023年第2期108-114,共7页Chinese Journal of Radiological Health

基　　金：国家自然科学基金(资助号:U186720);江苏省高等学校学科优先发展计划(PAPD)。

摘　　要：目的 基于秦山核电站历年的流出物排放量及周围海域海洋介质的监测水平,了解其海域生物介质的放射性富集水平,评价其流出物对周围海域生物介质的影响。方法 收集2008—2017年秦山核电站所监测得到的环境介质中3H、14C、90Sr、137Cs、110mAg的监测数据,用IBM SPSS Statistics 26进行数据处理及分析。结果 秦山核电基地周围海域鲻鱼氚活度浓度为0.5~2.9 Bq/kg、牡蛎体内氚活度浓度为0.55~8.2 Bq/kg,二者受核电站流出物的影响氚活度浓度呈总体上升趋势;14C、137Cs与90Sr在监测生物中的活度浓度低于本底值,相关性分析结果显示核电站流出物对14C几乎没有影响;110mAg的活度水平在牡蛎体内逐年变化显著下降,在鲻鱼体内稳定在本底水平以下。结论 秦山核电站作为中国内地运行时间最长的核电站,其周围海域生物介质体内多数核素都低于本底水平,该核电站流出物对周围海域海洋生物介质影响较小。Objective To determine the radioactive enrichment level in marine biological media around Qinshan Nuclear Power Plant and to evaluate the impact of effluent on marine biological media in the surrounding sea area based on the discharge of effluent from the nuclear power plant over the years and the monitoring level of surrounding marine media.Methods The monitoring data of 3H,14C,90Sr,137Cs,and 110mAg in the environmental media monitored in Qinshan Nuclear Power Plant from 2008 to 2017 were collected,and the data were processed and analyzed by IBM SPSS Statistics 26.Results The activity concentrations of tritium in mullet and oyster in the sea area around Qinshan Nuclear Power Plant were 0.5-2.9 Bq/kg and 0.55-8.2 Bq/kg,respectively,and the activity concentrations of tritium in both increased generally under the influence of effluent from the nuclear power plant.The activity concentrations of 14C,137Cs,and 90Sr in the monitored organisms were lower than the background values.The results of correlation analysis showed that the effluent from the nuclear power plant had almost no effect on 14C.The activity level of 110mAg decreased significantly year by year in oyster,and remained below the background level in mullet.Conclusion Qinshan Nuclear Power Plant is the longest operating nuclear power plant in China's Mainland.Most of the nuclides in biological media in the surrounding sea area are lower than the background levels,and the effluents from the nuclear power plant have little influence on marine biological media in the surrounding sea area.

关 键 词：秦山核电站 液态流出物 放射性核素 海洋生物 

分 类 号：X591[环境科学与工程—环境工程]