湖北部分地区气溶胶中放射性核素监测研究

Study on the Radionuclide Monitoring of Aerosol in some Areas of Hubei

用宽能型低本底高纯锗谱仪BE6530对湖北四城市2017年12月至2018年11月采集的48组气溶胶样品进行放射性核素分析,并利用SPSS软件将分析结果与空气中PM2.5、PM10、SO2和NO2浓度数据进行关联性研究。监测表明,7Be、210Pb、40K全年平均值为4.793 mBq/m^3、1.481 mBq/m^3和56.2μBq/m^3,232Th活度浓度87.5%的数据低于探测限,最高值为21.1μBq/m^3;226Ra活度浓度16.7%的数据低于探测限,最高值为19.8μBq/m^3;238U活度浓度全部低于探测限。研究发现,210Pb活度浓度与PM2.5浓度、NO2浓度显著正相关。

Radionuclide analysis of 48 groups of aerosol samples collected in four cities of Hubei Province from December 2017 to November 2018 was carried out by wide energy low background HPGe BE6530,the correlation between the analysis results and the concentration of PM2.5 or PM10 or SO2 or NO2 was studied by SPSS.The monitoring results showed that the annual average values of 7 Be,210Pb and 40 K were 4.793 mBq/m^3,1.481 mBq/m^3,56.2 mBq/m^3,and 87.5%of232Th activity concentration were lower than the detection limit,with a maximum value of 21.1 mBq/m^3;16.7% of 226Ra activity concentration were lower than the detection limit,with a maximum value of 19.8 mBq/m^3;238U activity concentrations were all lower than the detection limit.It was found that 210Pb activity was significantly correlated with PM2.5 and NO2.