gaga, eftade o. anadolu university - faculty of engineering - department of environmental engineering, Eskişehir, Turkey

AMBIENT CONCENTRATIONS OF ELEMENTAL AND ORGANIC CARBON IN URBAN AND SUBURBAN ATMOSPHERES IN ESKİŞEHİR: ESTIMATION OF THE SECONDARY ORGANIC CARBON

34412

Ambient air particulate matter samples were collected from urban and suburban sites of Eskişehir in 2012. Samples were collected concurrently from both sites between 26^th of February and 20^th of December 2012. Mass concentrations of particulate matters (fine particles-PM2.5, coarse particles-PM2.5-10 and total suspended particulate matter-TSP) were determined. TSP samples were analyzed by Thermal Optical Carbon Analyzer to determine elemental carbon (EC), organic carbon (OC) and total carbon (TC) concentrations. It was found that 4.9% of the TSP is composed of EC, and 13.6 % is OC in urban sampling point. EC and OC contributions in suburban sampling points were 2.7% and 9.6%, respectively. OC/EC ratio was found to be almost 1.5 times higher in suburban sampling site than that of urban sampling site. EC tracer method was used to estimate the contribution of Secondary Organic Carbon (SOC). The SOC percent of TSP was estimated as 7.1 % and 5.6 % for the urban and suburban locations, respectively.

429

Particulate matter , Elemental carbon , Organic carbon , Secondary organic carbon

Anadolu University Journal of Science and Technology. A : Applied Sciences and Engineering

438