Investigation on gross α and β radioactivity in food and environmental media in Nantong City from 2019 to 2022
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.
NETL
NSTL
万方数据
