昌江核电站运营前附近海域总β放射性水平  

Gross beta radioactivity in the sea area near Changjiang nuclear power plant before operation

作　　者：赵力[1] 李冬梅[1] 周鹏[1] 赵峰[1] 张保学[2] 谷河泉[1] 梁谦林[1] ZHAO Li;LI Dong-mei;ZHOU Peng;ZHAO Feng;ZHANG Bao-xue;GU He-quan;LIANG Qian-lin(South China Sea Environmental Monitoring Center,State Oceanic Administration,Guangzhou 510300,China;South China Sea Standards And Metrology Center,State Oceanic Administration,Guangzhou 510300,China)

机构地区：[1]国家海洋局南海环境监测中心,广东广州510300 [2]国家海洋局南海标准计量中心,广东广州510300

出　　处：《海洋环境科学》2021年第4期521-526,共6页Marine Environmental Science

基　　金：国家自然科学基金项目(4177060428)。

摘　　要：在昌江核电站运营前,研究人员对其附近海域做了水质、沉积物和海洋生物总β放射性调查,并与我国其他海域及昌江核电站周围的陆地环境做了对比。结果表明:(1)海水样品总β比活度范围为0.040~0.074 Bq/L,平均值为0.054 Bq/L,与渤海、黄海、东海、南海近海、大亚湾核电站等海域相比,昌江核电站海域海水中总β放射性水平相对较低;(2)表层沉积物中总β比活度范围为257~925 Bq/kg,平均值为653 Bq/kg,研究海域沉积物中总β放射性水平与香港、青岛、阳江等海域水平相当;(3)海洋生物样品中总β比活度范围为8.7~63.8 Bq/kg,平均值为48.0 Bq/kg,海鱼类、虾类和贝类体内总β平均值分别为56.7 Bq/kg、63.4Bq/kg和24.0 Bq/kg,鱼类和虾类明显大于贝类。本研究可为今后科学、合理地评价核电站运行对海洋环境的影响提供重要的数据支撑。Before the operation of Changjiang nuclear power plant(CNPP),gross beta radioactivity in seawater,marine sediments and marine organisms was investigated in the coastal area near CNPP.Our observations were compared with those investigated in other terrestrial and marine environment.The results suggested that:(1)Gross beta in seawater ranged from 0.040 to 0.074 Bq/L with the mean value of 0.054 Bq/L,which were slightly lower than those near Daya bay nuclear power plant,and the offshore Bohai sea,the Yellow sea,and the South China sea.(2)Gross beta in marine surface sediment ranged from 257 to 925 Bq/kg,with the mean value of 653 Bq/kg,which was at the same level as those in the coastal areas of Hongkong,Qingdao and Yangjiang.(3)Gross beta in marine organisms ranged from 8.7 to 63.8 Bq/kg.The mean value of gross beta in sea fishes(56.7 Bq/kg),shrimps(63.4 Bq/kg)were significantly higher than that in shellfishes(24.0 Bq/kg).The results were expected to provide important baseline values and help to assess the radioecological risk from the nuclear power plant operation on the coast.

关 键 词：总β 海水 沉积物 海洋生物 昌江核电站 

分 类 号：X55[环境科学与工程—环境工程] X837