Aliağa endüstri bölgesinde Poliklorlu Bifeniller (PCB) ve Polisiklik Aromatik Hidrokarbonların (PAH) dış hava konsantrasyonlarının yerel ve mevsimsel değişimi

Ambient air samples were collected during the four seasonal (winter, spring, summer, and fall) periods at forty different sampling sites in Aliağa industrial region in İzmir, Turkey. Spatial and seasonal variations of semi-volatile (PAHs and PCBs) toxic organic air pollutants were determined by passive sampling method in 2009 to 2010. Ambient air studies were carried out suburban and urban sites consisted power plant, petroleum refinery, petrochemical industry, several steel plants with arc furnaces, scrap metal and slag storage areas, stack filter dust piles, paved and uppaved roads, coal screening plants, ship dismantling plants and several gas statins and tank fields. Phenanthrene was the most abundant compound at all sites, and all samples were dominated by low molecular weight PAHs. The major PAH sources in the region were observed as steel plants, petroleum refinery, and ship dismantling plants. Atmospheric PAH concentrations were higher in winter than in summer, indicating that wintertime concentrations were affected by residential heating emissions. On the contrary, highest atmospheric PCBs concentrations were observed in summer, probably due to increased volatilization at higher temperatures. Study results were indicated that steel plants and ship dismantling plants were the major PCB sources in the region. Low molecular weight PAHs (phenanthrene, fluorene, fluoranthene) and PCBs (tri-, tetra-, penta-CBs) were the most abundant compounds in air for both seasons.