Pollution par les particules fines dans l'agglomération d'Alger

International audience Absract The study presents the levels of air pollution by fine particulates matters PM-10, PM-2.5 and PM-1 at five different sites in the great Algiers. The results revels that fines particles rise high levels and exceeds le European and WHO guidelines. The respirable fraction PM-2,5 constitute approximately 60% in mass of the PM-10. It is shown that PM-10 particles follow a bimodal distribution which is characteristics of the urban background. The size distribution of heavy metals associated to particles depending of the emission source. The lead which is relatively abundant in Algiers is associated to the very fine particles. The study presents also correlations between some parameters.