Dr. Gelencsér András
RECTOR, university teacher, research group leader
University of Pannonia
Grant amount
39 116 258 Ft
Brief description of the research
Nowadays the global climate change and the air quality issues are increasingly focusing attention on air chemistry research. The HUN-REN–PE Air Chemistry Research Group firstly focuses on the identification of different source types of the atmospheric aerosol, the analysis of their physical and chemical characteristics and their effects on the environment.
In recent years one of the most significant research results is the identification of universal and new specific tracer compounds in aerosol samples collected during combustion of different types of municipal solid wastes in laboratory system. These compounds have also been detected in environmental samples, which have been used to estimate the impact of domestic waste burning on air quality.
Based on the chemical and optical properties of laboratory-generated tar balls these soot-like particles have an important role in the global radiation balance due to their significant absorption properties.
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In cities, aerosol particles resulting from resuspension of deposited road dust by moving vehicles and wind, and direct emissions from mechanical abrasion of vehicles, can contribute up to 30–50% of urban PM10. An on-line sampling method was developed to collect the respirable fraction of deposited road dust, allowing the application of previously unused analytical methods.
The effect of the hygroscopicity of aerosol particles on the measured mass concentration was investigated which supported that these measured values can cause positive errors of up to 15–19% in fall and winter. The meteorological and chemical properties of Hungarian winter air pollution episodes during cold and humid-foggy conditions were analysed which resulted a significant increase in PM10 mass concentration.
