Within the “Polveri Fini” Project funded by Lazio Region, PM10 and PM2.5 24 h-samples were daily collected from October 2004 to July 2005 at six sites of different typologies. About 1000 samples of airborne particulate matter (PM) have been chemically fractionated (extract and mineralised residual) by different element solubility, achieving a meaningful elemental characterization of the single PM sample. The dimensional distribution of the two chemical fractions has been also investigated. Results show for most of the investigated elements significantly different size distributions of the two solubility fractions and, in particular, the extract can be mainly related to fine particles. On the other hand, element contributions in coarse particles from traffic-related sources are mainly found in the residual fraction. These behaviours are cleanly observed for some metals (As, Cd, Pb and V) of critical importance for the environment.
Element solubility and size distribution of airborne particulate matter in the Lazio region (Italy) / Canepari, Silvia; Cardarelli, Enrico; Pietrodangelo, Adriana; Astolfi, Maria Luisa; Marzo, Maria Letizia; F., Olivieri. - STAMPA. - 1:(2007), pp. 11-14. (Intervento presentato al convegno Proceedings of 6th International Conference on Urban Air Quality – UAQ 2007 tenutosi a Limassol, Cipro nel 27-29/03/2007).
Element solubility and size distribution of airborne particulate matter in the Lazio region (Italy)
CANEPARI, Silvia;CARDARELLI, Enrico;PIETRODANGELO, Adriana;ASTOLFI, Maria Luisa;MARZO, Maria Letizia;
2007
Abstract
Within the “Polveri Fini” Project funded by Lazio Region, PM10 and PM2.5 24 h-samples were daily collected from October 2004 to July 2005 at six sites of different typologies. About 1000 samples of airborne particulate matter (PM) have been chemically fractionated (extract and mineralised residual) by different element solubility, achieving a meaningful elemental characterization of the single PM sample. The dimensional distribution of the two chemical fractions has been also investigated. Results show for most of the investigated elements significantly different size distributions of the two solubility fractions and, in particular, the extract can be mainly related to fine particles. On the other hand, element contributions in coarse particles from traffic-related sources are mainly found in the residual fraction. These behaviours are cleanly observed for some metals (As, Cd, Pb and V) of critical importance for the environment.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
