Applying size segregation to relate the surrounding aerosol pollution to its source

Autor(en)

Irena Grgic, Janja Tursic, Axel Berner

Abstrakt

Size segregated sampling of aerosol particles at the coal-fired power station otanj, Slovenia was performed by a newly developed system. In addition, simultaneous sampling of particles was performed at two locations, Velenje and Veliki vrh, chosen on the basis of long term monitoring of SO(2) in the influential area of power plant. The signature of the power plant (e.g. characteristic size distributions of some typical trace elements) was identified. For elements, like As, Mo, Cd and Ga, which are typical for coal combustion, the highest concentrations were observed in the size range between 1 and 4 mu m. For Se and sometimes for Ga two modes were identified, first between 0.1 and 0.5 mu m and second between 1 and 4 mu m. Ratios between the average concentrations of selected elements in fine and coarse particles collected at Veliki vrh (the most influenced location) and Velenje (usually not influenced by the thermo power station) were significantly higher than 1 in the case of Mo and Se for coarse and fine size range, while for As the ratio was higher than 1 for the coarse fraction. Consequently, Mo, Se and As were found as the most important tracers for the emissions from the investigated source. On the basis of the ratios between the concentrations of elements measured in particles at low and high SO(2) concentrations at Veliki vrh, Cd was shown to be a typical tracer as well. Our results definitely showed that size segregated measurements of particles at the source and in the influenced area give more precise information on the influence of source to the surrounding region. It was found that patterns of size distributions for typical trace elements observed at the source are found also in the influenced area, i.e. Veliki vrh.

Organisation(en)

Aerosolphysik und Umweltphysik

Externe Organisation(en)

National Institute of Chemistry

Journal

Journal of Atmospheric Chemistry

Band

63

Seiten

247-257

Anzahl der Seiten

11

ISSN

0167-7764

DOI

https://doi.org/10.1007/s10874-010-9167-9

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

103008 Experimentalphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c773bd5e-9cfa-4e47-a8af-3602d4ae48fd