南充市主城区大气气溶胶总α、总β放射性水平测量与分析  

Measurement and Analysis of Gross Alpha and Beta Radioactivity of Atmospheric Aerosols in Nanchong City

作　　者：吴雪梅 周更明 何宗喜[2] 杜波 雷熊 钱一凡 WU Xue-mei;ZHOU Geng-ming;HE Zong-xi;DU Bo;LEI Xiong;QIAN Yi-fan(Nanchong Ecological Environmental Monitoring Center Station,Nanchong,Sichuan 637000,China;Department of Nuclear Medicine,Affiliated Hospital of North Sichuan Medical College,Nanchong,Sichuan 637000,China)

机构地区：[1]四川省南充生态环境监测中心站,四川南充637000 [2]川北医学院附属医院核医学科,四川南充637000

出　　处：《四川环境》2021年第4期224-228,共5页Sichuan Environment

基　　金：南充市科技计划项目(18YFZJ0074)。

摘　　要：为掌握南充市大气气溶胶总放射性水平及变化趋势,分析大气污染与气溶胶放射性的影响关联,参考《生活饮用水标准检验方法放射性指标》(GB/T 5750-2006),对2019年南充市主城区气溶胶总α、总β放射性活度浓度进行了测量,并对气溶胶总α、总β放射性活度浓度与同时段PM_(2.5)、PM_(10)的浓度相关性进行了分析。结果表明,南充市主城区气溶胶总α、总β放射性活度浓度范围分别为0.05~0.32 mBq/m^(3)与0.44~1.79 mBq/m^(3),测量值存在明显的时间和地区特征。分析得出,测量值随时间变化与颗粒物污染成因有关,且测量月均值与PM_(2.5)、PM_(10)存在明显相关性,为气溶胶放射性与大气污染的交叉分析提供可行性依据。To understand atmospheric aerosol gross alpha and beta radioactivity levels and the change trends in Nanchong city and analyze the correlation of influence between atmospheric pollution and aerosol gross radioactivity,the concentration of totalαand totalβradioactivity in the main urban area of Nanchong city in 2019 was measured by referring to the Radioactivity Index of Standard Test Methods for Drinking Water(GB/T 5750-2006).The correlation between aerosol grossαandβradioactivity and the concentrations of PM_(2.5) and PM_(10) in the same period were analyzed.The results showed that the gross alpha radioactivity of aerosol in Nanchong city ranged from 0.05 mBq/m^(3) to 0.32 mBq/m^(3),and gross beta radioactivity of aerosol from 0.44 mBq/m^(3) to 1.79 mBq/m^(3).The measured values had obvious temporal and regional characteristics.According to the analysis,the variation of measured values over time is related to the causes of particulate matter pollution,and there was an obvious correlation between the monthly average values and PM_(2.5) and PM_(10),which provides a feasible basis for the cross-analysis of aerosol radioactivity and air pollution.

关 键 词：气溶胶 总α 总β 大气污染 相关性 

分 类 号：X837[环境科学与工程—环境工程]