Aerosol sources identification in Kaunas city using stable carbon isotope and polycyclic aromatic hydrocarbons analysis
- 1Center for Physical Sciences and Technology, Vilnius, Lithuania (garbaras@ar.fi.lt)
- 2School of Physics & Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
- 3Department of Environmental Technology, Kaunas University of Technology, Radvilenu pl. 19, Kaunas, Lithuania
The main idea of this research was to combine carbon stable isotope ratio (δ13C) analysis and polycyclic aromatic hydrocarbons (PAH) diagnostic ratios for the identification of pollution sources in Kaunas city, Lithuania. Aerosol particle sampling was performed in wintertime simultaneously in outdoor and indoor environments using cascade impactors.
Due too low mass not all impactors stages were analysed, especially in the indoor environment. It was determined that total carbon concentrations were higher in outdoor samples in the most cases. The outdoor δ13C values varied from -27.5 to -24.5 ‰. The indoor δ13C values varied from -28.5 to -25.8 ‰ and were close to δ13C values reported for biomass burning [1].
δ13C and PAH analysis revealed that main aerosol sources were biomass combustion and traffic emissions. Also coal combustion was identified as common source for aerosol particles in one location.
[1] A. Garbaras et al., “Stable carbon fractionation in size-segregated aerosol particles produced by controlled biomass burning,” J. Aerosol Sci., 2015.
How to cite: Garbaras, A., Garbariene, I., Masalaite-Nalivaike, A., Ceburnis, D., Krugly, E., Remeikis, V., and Martuzevicius, D.: Aerosol sources identification in Kaunas city using stable carbon isotope and polycyclic aromatic hydrocarbons analysis, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-18479, https://doi.org/10.5194/egusphere-egu2020-18479, 2020
