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Main particulate matter components in Saxony (Germany): Trends and sampling aspects
G Spindler1, K Müller, H Herrmann
1Institut für Troposphärenforschung e.V., Permoserstr. 15, D-04318, Leipzig, Germany. spindler@tropos.de
Environmental Science and Pollution Research International
|November 15, 2008
Summary
Air quality monitoring in Leipzig shows decreasing soot and sulfate but increasing nitrate and ammonium. Gravimetric mass concentration has significantly declined since 1990.
Area of Science:
- Atmospheric chemistry and physics
- Environmental science
- Air quality monitoring
Background:
- Industrialized regions like Leipzig, Germany, experience complex atmospheric aerosol dynamics.
- Long-term monitoring is crucial for understanding air quality trends and impacts.
Purpose of the Study:
- To compare two aerosol sampling systems (Sierra-Andersen-PM 10 and Rupprecht and Patashnik Partisol 2000) for collecting filter samples.
- To analyze trends in aerosol composition and mass concentration from 1992 to 1998.
- To assess seasonal variations in aerosol particle mass.
Main Methods:
- Collected daily and weekly aerosol filter samples using high volume samplers with PM10 and PM2.5 inlets.
- Analyzed mass concentration and ionic composition of collected samples.
- Compared data from different sampling durations and flow rates.
Main Results:
- Small differences observed between daily and weekly sampling systems for mass and ion concentrations.
- Observed a decrease in soot and sulfate, and an increase in nitrate and ammonium concentrations.
- Higher coarse particle mass observed in summer, potentially due to soil resuspension.
- A significant downward trend in gravimetric mass concentration was found since 1990.
Conclusions:
- Aerosol sampling strategies yield comparable results with minor variations.
- Significant shifts in aerosol composition indicate changing pollution sources or atmospheric processes.
- Long-term data confirm a decreasing trend in overall aerosol mass concentration in the region.
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