İzmir ilinde atmosferik partiküller içerisindeki ağır metaller ve onların kuru birikimleri

m ABSTRACT A series of twenty four dry deposition samples were collected on a surrogate surface between September 2000 and June 2001 in Izmir, Turkey and analysed for trace elements of anthropogenic and crustal origin. Concurrently ambient air samples were taken using a high-volume sampler. The results show that the average measured Pb, Cr, Zn, Cd, Cu, Ni, Mn, Mg, Al, Ca and Fe dry deposition fluxes were 0.219, 0.0158, 1.9057, 0.0239, 0.1237, 0.1292, 0.1350, 3.1, 23.5, 43.1 and 12.089 mg m"2 day"1, respectively. Particulate phase overall dry deposition velocities calculated using the dry deposition fluxes and ambient concentrations. Average dry deposition velocities calculated using the dry deposition fluxes were 2.837, 1.23, 4.63, 3.62, 1.35, 4.95, 1.23, 0.98, 0.55, 1.46 and 6.15 (cm s"1) for Pb, Cr, Zn, Cd, Cu, Ni, Mn, Mg, Al, Ca and Fe, respectively. This values were higher than values typically used to estimate particulate trace metal deposition, however they were in reasonable agreement with values determined using similar techniques. The extent of the anthropogenic contribution was estimated by the degree of enrichment of these elements compared to the average local soil composition. High values (>10) were calculated for Cd, Zn, Pb, Fe, Mg and Ni (anomalously enriched elements- AEEs) and relatively low values ( for Cr, Cu, Mn and Ca in dry deposition samples. In aerosol samples, all trace metals were found as non- enriched elements (NEEs).