2014—2019年无锡市环境样品总α和总β放射水平调查

Gross α and gross β radioactivity of environmental samples in Wuxi, China, 2014—2019

目的研究无锡市环境样品中总α和总β的放射性水平,完善放射水平资料,及时发现可能的放射性污染。方法使用BH 1 227型低本底α、β测量仪,测量无锡市环境中沉降灰、气溶胶、饮用水及食品中总α和总β的放射性水平。结果 2014—2019年无锡市环境样品中,食品样品总α和总β的平均放射性水平分别约为0.01~5.98、9.47~547.86 Bq/kg,水样品分别约为1.2~22、0.1~141 mBq/L,沉降灰分别约为39~44 790、743.1~101 500 mBq/m^(3),气溶胶分别约为50~1 125、38~9 510μBq/m^(3)。结论应加强无锡市环境样品放射水平的监测,扩大监测范围,增加监测频率,进一步完善无锡市放射水平基线资料。

Objective To study grossαand grossβradioactivity in environmental samples in Wuxi,China,and perfect the radioactivity data,and to discover possible radioactive contamination in time.Methods The BH1227 low-backgroundαandβmeasuring instrument was used to determine grossαand grossβradioactivity in sedimentary dust,aerosol,drinking water,and food samples in Wuxi.Results Among environmental samples collected in Wuxi,2014—2019,the mean grossαand grossβradioactivity levels were 0.01~5.98 Bq/kg and 9.47~547.86 Bq/kg in food samples,respectively,1.2~22 mBq/L and 0.1~141 mBq/L in water samples,respectively,39~44790 mBq/m^(3) and 743.1~101500 mBq/m^(3) in sedimentary dust samples,respectively,and 50~1125μBq/m^(3) and 38~9510μBq/m^(3) in aerosol samples,respectively.Conclusion We should strengthen radioactivity monitoring of environmental samples in Wuxi through increasing the scope and frequency of monitoring,to perfect baseline radioactivity data of Wuxi.