To investigate the long-term variation of the activity concentration of two radionuclides 210Pb and 7Be exists in atmospheric aerosol and the relationship with PM2.5，PM10 and O3 in the atmosphere in Kunming，Baoshan and Lincang in Yunnan province, five years monitoring data were obtained by the automatic monitoring station in the main area of Kunming，Baoshan and Lincang，and the variation tendency of 210Pb and 7Be，and the relationship with PM2.5，PM10 and O3 werr studied. Based on these data，the correlations between 210Pb，7Be and PM2.5，PM10，O3 were discussed. Our study showed that for 7Be，the average data per year for the three cities were similar. While for 210Pb，the data in Kunming and Baoshan are similar，but the value of Lincang is evident higher. Furthermore, during five years，the variation of 7Be in all three cities was pretty small. While 210Pb in Kunming and Baoshan also keeps stable，but decreases evidently in Lincang during these years. The values for both 210Pb and 7Be are higher in dry season than in wet season in one year especially for 7Be. The values of 210Pb and 7Be are highly correlated. 7Be and O3 in all three cities have positive?correlation，such correlation could originate from the similar strong correlation with the atmospheric vertical circulation for both 7Be and O3. In Lincang，210Pb is directly proportional to PM10，while in Baoshan，210Pb is directly proportional to PM2.5，the variation of 210Pb and the correlation with PM10 and PM2.5 could relate to the radiation environment on earth surface. We hope our work can benefit to further pollution control.
武荣国. 云南省三城市气溶胶中210Pb、7Be的长期变化趋势及与PM2.5、PM10和O3关系研究[J]. 世界核地质科学, 2022, 39(1): 130-138.
WU Rongguo. The Long-term Variation Tendency of 210Pb and 7Be Exist in Aerosol and the Correlation with PM2.5, PM10 and O3 in Three Cities of Yunnan Province. , 2022, 39(1): 130-138.