不同类型居民饮用水天然放射性核素特性分析  

Analysis of Natural Radionuclide Characteristics of Drinking Water for Different Types

作　　者：郭小敏 陈文涛[1] 李美丽[1] 孙勋杰 蒋岚[1] 陈水广 Guo Xiaomin;Chen Wentao;Li Meili;Sun Xunjie;Jiang Lan;Chen Shuiguang(Guangdong Environment Radiation Monitoring Center,Guangzhou 510300,China)

机构地区：[1]广东省环境辐射监测中心,广州510300

出　　处：《核安全》2024年第2期5-11,共7页Nuclear Safety

摘　　要：为探究不同类型饮用水源中天然放射性核素的差异性,本文对某地区地下水、地表水(河流水、水库水)集中式饮用水源中总α、总β、U_(天然)、Th_(天然)、^(226)Ra、^(40)K、^(210)Pb、^(210)Po放射性活度浓度进行监测分析。结果表明,不同类型饮用水源中总α、总β放射性水平及40K、226Ra等天然放射性核素含量呈一定规律性分布,同时该地区饮用水中总α、总β均未超过GB 5749—2022《生活饮用水卫生标准》规定的限值(总α≤0.5 Bq·L^(-1),总β≤1 Bq·L^(-1)),该地区饮用水源辐射环境状况安全可控。In order to explore the features of natural radionuclides in different types of drinking water sources,the radioactivity concentrations of totalα,totalβ,Unatural,Thnatural,^(226)Ra,^(40)K,^(210)Pb and ^(210)Po in groundwater and surface water centralized drinking water sources in a certain area were monitored and analyzed.The results showed that the totalαand totalβradioactivity levels and natural radionuclide contents such as 40K and ^(226)Ra were regularly distributed in different types of drinking water sources,the totalαand totalβin drinking water in the area did not exceed the limit values stipulated in GB 5749-2006(totalα≤0.5 Bq/L,totalβ≤1 Bq/L),and the radiation environment of drinking water sources in this area was safe and controllable.

关 键 词：饮用水源 放射性 天然核素 差异性 

分 类 号：X837[环境科学与工程—环境工程]