南通市2019-2022年食品及环境介质总α和总β放射水平调查
Investigation on gross α and β radioactivity in food and environmental media in Nantong City from 2019 to 2022
侯沙沙 1顾俊 1何智敏 1顾心逸 1黎源 1许滋宁1
作者信息
- 1. 南通市疾病预防控制中心,江苏南通 226007
- 折叠
摘要
目的 了解南通市近年来食品及环境介质总α、总β放射水平.方法 2019-2022年,采集南通市生活饮用水、沉降灰和气溶胶3种环境样品以及9种食品样品,采用相关国标方法检测总α和总β放射性水平.结果 2019-2022年,食品样品中总α放射性水平在0.42～5.94 Bq/kg,总β放射性水平在44.23～124.50 Bq/kg.总α放射性水平生活饮用水在0.02～0.03 Bq/L,气溶胶在0.21～0.30 mBq/m3,沉降灰在16.93～31.00 Bq/m2;总β放射性水平生活饮用水在0.08～0.11 Bq/L,气溶胶在1.18～1.30 mBq/m3,沉降灰在40.95～63.85 Bq/m2.结论 近年来南通市食品及环境介质中总α、总β放射水平基本平稳,处于环境本底状态.
Abstract
Objective To investigate the gross α and β radioactivity in food and environmental media in Nantong City during re-cent years.Methods Three environmental samples(daily drinking water,fallout and aerosols)and nine food samples were collected in Nanjing City from 2019 to 2022,and the gross α and β radioactivity was tested using international methods.Results The gross αand β radioactivity was 0.42 to 5.94 Bq/kg and 44.23 to 124.50 Bq/kg in food samples from 2019 to 2022.The gross α radioactivity was 0.02 to 0.03 Bq/L in daily drinking water,0.21 to 0.30 mBq/m3 in aerosols,and 16.93 to 31.00 Bq/m2 in fallouts,and the grossβ radioactivity was 0.08 to 0.11 Bq/L in daily drinking water,1.18 to 1.30 mBq/m3 in aerosols,and 40.95 to 63.85 Bq/m2 in fall-outs.Conclusions The gross α and β radioactivity was almost stable in food and environmental media in Nantong City during recent years,which remained at environmental background status.
关键词
食品/环境介质/总α/总β/放射水平Key words
Food/Environmental medium/Gross alpha/Gross beta/Radioactivity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据