In this study, the bulk deposition fluxes as well as the aerosol samples were simultaneously collected in Shenzhen during January-December 2015 and were analyzed for beryllium-7(7Be). The monthly deposition fluxes of7Be in Shenzhen vary between 0.91 Bq/m2d and 4.23 Bq/m2d, with a mean value of 1.83 Bq/m2d. The calculated depositional velocities of7Be vary within the range of 0.15~5.10 cm/s (with an average of 1.35 cm/s). The depositional fluxes as well as the depositional velocities of7Be show a significant positive correlation with the amount of rainfall, indicating that precipitation plays an important role in the removal of7Be. A negative relationship was found between the velocity of7Be and the atmospheric concentrations of PM10 and PM2.5.%同步分析了2015年1~12月份期间深圳市大气7Be总沉降通量以及大气气溶胶中7Be的放射性比活度,并据此计算获得大气颗粒物沉积速率。结果表明,深圳市大气7Be的沉降通量范围为0.91~4.23 Bq/m2d,平均值为1.83 Bq/m2d；大气气溶胶沉积速率在0.15~5.10 cm/s之间,平均值为1.35 cm/s。研究发现,大气7Be沉降通量和沉积速率均与降雨量呈显著的正相关关系,提示湿沉降是大气7Be 清除的主要机制；大气7Be 沉积速率与大气颗粒物(PM10、PM2.5)含量呈负相关关系。
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