Fig. 5

Variation of aerosol mass concentration at different particle sizes at various sites. Dynamic distribution of aerosol mass concentration of PM 1.0 (A), PM 2.5 (D) and PM 10.0 (G) at 0.5 m in different groups. Dynamic distribution of aerosol mass concentration of PM 1.0 (B), PM 2.5 (E) and PM 10.0 (H) at 1.0 m in different groups. Dynamic distribution of aerosol mass concentration of PM 1.0 (C), PM 2.5 (F) and PM 10.0 (I) at 1.5 m in different groups.