大气中氡子体浓度和PM_(2.5)浓度相关性的初步实验研究

Validation of the Correlation between Outdoor Concentrations of PM_(2.5) and Short-lived Radon Progenies

目的对氡子体浓度与PM_(2.5)浓度的相关性进行初步研究。方法运用德国BWLM-Plus-s氡钍子体测量仪和南华NR-200A氡子体连续测量仪于2016年春对北京市房山区中国原子能科学研究院生活区空气中氡子体浓度进行测量,记录同期PM_(2.5)浓度。采用root程序进行数据处理分析。结果测量时间段测量地点的平衡当量浓度EECRn平均值,两台仪器分别为7.30 Bq/m^3和8.22 Bq/m^3。同期记录的PM_(2.5)浓度平均值为72μg/m^3。EECRn和PM_(2.5)浓度变化趋势基本一致。结论氡子体浓度与PM_(2.5)浓度呈线性正相关关系。

Objective To research the correlation between outdoor concentrations of PM2.5 and short-lived radon progeny.Methods The concentration of radon progeny was separately measured using Radon Daughter-Working-Level Monitor BWLM-PLUS-S by Germany and Radon Daughter Continuous Monitor NR-200A by University of South China in Fangshan district,Beijing.And the concentration of PM2.5 was registered from related website in parallel.Then the root software was used for data processing and analysis.Results The EECRn averages were 7.30Bq/m3 and 8.22 Bq/m3 for BWLM and NR-200A respectively.The EECRn values were consistent with PM2.5 concentrations on the whole.Conclusion A positive linear correlation was observed between outdoor concentrations of radon progeny and PM2.5.