摘要
目的评价日本福岛核电站事故对南通市海产品放射性水平的影响程度。方法 2010—2017年每年分季度(除封海季节外)分类别采集贝类、鱼类、虾类、蟹类等海产品,送实验室检测总α、总β放射性水平。2017年鲳鱼和文蛤送江苏省疾病预防控制中心进行放射性核素检测。结果文蛤、金钩虾、梭子蟹、小黄鱼总α和总β放射性水平各年份间均无回归关系(P>0.05);鲳鱼总α放射性水平各年份间无回归关系(F_((1,25))=0.126,P>0.05),总β放射性水平各年份间有回归关系(F_((1,27))=4.65,P<0.05)。2017年文蛤和鲳鱼天然核素铀-238、钍-232、镭-226、钾-40等均在本底水平,碘-131、铯-134、铯-137等3种人工核素水平小于检测限。结论截止到2017年,日本福岛核电站事故暂时未影响到南通市沿海海域海产品,仍需继续监测,以掌握南通市沿海海域海产品放射性水平动态变化趋势。
Objective To assess the impact of Fukushima nuclear power plant accident on the level of radioactive level of the seafood in Nantong. Methods Samples of shellfish, fish, shrimps and crabs were collected quarterly（except fish moratorium）, and total alpha and beta ray levels were tested. The pomfret and clams were sent to Jiangsu provincial disease prevention and control center for radionuclide detection in 2017. Results The total alpha and total beta ray levels of clams, golden hooked shrimps, pike crabs, and yellow fish were not correlated between each year（P〉0.05）, There was no regression relationship between years of total alpha radioactivity level（F_（（1,25））=0.126, P〉0.05）, while the total beta ray was the opposite（F_（（1,27））=4.65, P〈0.05）.The natural nuclides ^（238）U, ^（232）Th, ^（226）Ra and ^（40）K in clams and pomfret were at background level, and the level of artificial nuclide of ^（131）I, ^（134）Cs and ^（137）Cs were less than the detection limit. Conclusion Japan＇s Fukushima nuclear accident had not affected seawater products in the region for the time being. It was still necessary to continue monitoring the dynamic trends of the radioactivity level of marine products in the sea.
作者
何智敏
顾俊
张卫兵
HE Zhimin;GU Jun;ZHANG Weibing(Center for Disease Control and Prevention in Nantong City,Jiangsu Nantong 226000,China)
出处
《中国食品卫生杂志》
北大核心
2018年第5期522-525,共4页
Chinese Journal of Food Hygiene
基金
南通市科技局课题(qyz15081)
关键词
海产品
总α放射性
总Β放射性
食品
放射污染
南通
Seafood
total alpha radioactivity
total beta radioactivity
food
radiation pollution
Nantong
