东莞市东江水源饮用水总α、β放射性水平调查及年有效剂量估算  

Investigation of grossαand grossβradioactivity and estimation of annual effective dose in drinking water from Dongjiang River in Dongguan City,China

作　　者：黄兴 陈惠鹏 梁展珲 HUANG Xing;CHEN Huipeng;LIANG Zhanhui(Dongguan Sixth People’s Hospital,Dongguan 523000 China)

机构地区：[1]东莞市第六人民医院,广东东莞523000

出　　处：《中国辐射卫生》2024年第6期654-658,共5页Chinese Journal of Radiological Health

基　　金：东莞市社会科技发展(一般)项目(20221800901552)。

摘　　要：目的调查东莞市东江丰水期、枯水期的总α、总β放射性水平,评估东江水作为饮用水的辐射安全现状。方法监测东江沿岸8家以东江水为水源水的自来水厂的水源水、出厂水、末梢水在不同水期总α、总β放射性水平,估算饮用东江水所致内照射年有效剂量。结果丰水期水源水总α、总β放射性水平为0.016~0.041、0.063~0.140 Bq/L;出厂水总α、总β放射性水平为0.011~0.039、0.064~0.131 Bq/L;末梢水总α、总β放射性水平为0.013~0.024、0.078~0.127 Bq/L。枯水期水源水总α、总β放射性水平为0.012~0.029、0.055~0.141 Bq/L;出厂水总α、总β放射性水平为0.012~0.019、0.054~0.124 Bq/L;末梢水总α、总β放射性水平为0.012~0.024、0.083~0.134 Bq/L。估算公众饮用东江水所致总α和总β内照射有效剂量分别是3.6和0.48μSv/a。结论东莞市境内东江水总α、总β放射性低于《生活饮用水卫生标准》(GB 5749—2022)中放射性指标指导值,属于正常的天然环境本底水平,公众饮用东江水所导致内照射年有效剂量低于《饮用水水质准则》中确定的个人剂量标准。Objective To investigate the grossαand grossβradioactivity in Dongjiang River during high and low flow periods in Dongguan City,China,and evaluate the radiation safety status of Dongjiang River as a source of drinking water.Methods The grossαand grossβradioactivity levels were measured in the source water,treated water,and tap water from eight water treatment plants along the Dongjiang River,which relied on Dongjiang River water as their source,during both high and low flow periods.The annual internal effective dose from consuming Dongjiang River water was estimated.Results In high flow period,the grossαand grossβradioactivity levels were 0.016-0.041 and 0.063-0.140 Bq/L for source water,0.011-0.039 and 0.064-0.131 Bq/L for treated water,and 0.013-0.024 and 0.078-0.127 Bq/L for tap water.In low flow period,the grossαand grossβradioactivity levels were 0.012-0.029 and 0.055-0.141 Bq/L for source water,0.012-0.019 and 0.054-0.124 Bq/L for treated water,and 0.012-0.024 and 0.083-0.134 Bq/L for tap water.The estimated total effective doses of grossαand grossβradioactivity caused by consumption of water from Dongjiang River were 3.6 and 0.48μSv/a,respectively.Conclusion The grossαand grossβradioactivity levels of water from Dongjiang River in Dongguan City are below the radioactive indicator values specified in the Standards for Drinking Water Quality(GB 5749-2022),remaining within the range of natural environmental background.The annual internal effective dose caused by consumption of water from Dongjiang River is below the individual dose limit set in the Guidelines for Drinking Water Quality.

关 键 词：东莞市 东江 饮用水 放射性 

分 类 号：R144[医药卫生—公共卫生与预防医学]