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Chemical Composition of PM2.5 at Rural Backround Site Košetice
Schwarz, Jaroslav ; Havránek, Vladimír
PM2.5 generally represents fine fraction of atmospheric aerosol. Fine particles may remain in the atmosphere for days or even weeks and therefore they may be transported over long distances. Moreover, they may increase the background levels of atmospheric aerosol mass far from their origin. They have important adverse health effects and in the same time, they influence climate due to their direct and indirect effects on Earth radiative balance. To know the origin of PM2.5 aerosol, its chemical composition can serve as the diary of contacts with aerosol sources and transformations. Therefore it is necessary to study PM2.5 chemical composition if the fine aerosol sources should be revealed. A rural background site study can serve as a basis enabling to determine the real influence of larger sources like cities or an industry.
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Analysis of Elemental and Organic Carbon Eerosols: Crossroad vs. Suburban Area
Vodička, Petr ; Schwarz, Jaroslav ; Smolík, Jiří
Contribution present measurements of elemental and organic carbon aerosols during three measuring campaigns in periods 12.-15.5.09, 24.-27.8.09 and 6.-9.10.09. Measurements were performed in parallel at the crossroad Kamýcká-Suchdolská (outskirt part of Prague) and the Institute ICPF areal (urban background station). Measurements were carried out on on-line devices, in the two-hour intervals, with temperature program Eusaar2 on PM2.5 size fractions. The measurement results show that the field on-line device for measuring ECOC are suitable for monitoring of emissions from transport. Two-hour time resolution it allows to monitor the traffic intensity fluctuations caused by air pollution.
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