Figure 8From: Physico-chemical characterization of African urban aerosols (Bamako in Mali and Dakar in Senegal) and their toxic effects in human bronchial epithelial cells: description of a worrying situation Aerosol size distribution in Bamako (BK1 and BK2) and Dakar (DK). PM mass was determined for each membrane of impactor. Normalized concentration (μg) is represented as a function of particle aerodynamic diameter (μm).Back to article page