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| Titel |
Impact of wood combustion on urban PM10 concentration |
| VerfasserIn |
J. Schnelle-Kreis, G. Abbaszade, J. Orasche, R. Kunde, R. Zimmermann |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250021532
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| Zusammenfassung |
| The use of wood as renewable energy source is discussed contradictorily. On one hand the
favourable CO2 balance does not enhance the global warming problem whereas on
the other hand biomass combustion significantly contributes to ambient PM mass
loading.
The study presented here was carried out in Augsburg, Germany. It consisted of four main
parts: update of emission inventory for domestic heating, emission measurements, emission
and aerosol dispersion modelling and ambient monitoring. The data presented focus on the
results of the ambient monitoring.
As a result from the updated emission inventory for domestic heating we registered about
20,000 fireplaces for solid fuel within Augsburg. The wood consumption within the city
was calculated to add up to 73,000 stere (energy equivalent 395 TJ). The total PM
emission from these sources account for 46 t/a (ca. 40 % of total emissions) in
Augsburg.
Ambient PM samples have been collected during the heating periods 2006/7 and 2007/8.
In order to distinguish sources within the city from regional background, daily sampling was
carried out simultaneously at five different characterised sites within the city and
three sites outside the town. Samples are analysed for inorganic ions, elements,
EC/OC and organic tracer compounds. During a 10 day period in February 2008
additional samples were taken with 3 h time resolution and analysed for organic
compounds.
At the traffic related site PM10 mass concentrations were in the range of 8.7 - 93.2 μg/m3
(average 31.8 μg/m3) in winter 2006/7 and 5.1 - 98.0 μg/m3 (average 36.7 μg/m3) in
winter 2007/8. The limit value of 50 μg/m3 was exceeded 15 times in winter 2006/7 and 26
times in winter 2007/8 at this site.
The concentrations of Levoglucosan, an organic tracer for biomass combustion, were in
the range of 29 - 1922 ng/m3. Dehydroabietic acid, a specific tracer for coniferous wood
combustion, showed concentrations in the range of 13 - 708 ng/m3. Concentrations of
Potassium, which is commonly used as inorganic tracer for biomass combustion, were in the
range of 0.85;
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