 |
| Titel |
Diurnal variations of ambient particulate wood burning emissions and their contribution to the concentration of Polycyclic Aromatic Hydrocarbons (PAHs) in Seiffen, Germany |
| VerfasserIn |
L. Poulain, Y. Iinuma, K. Müller, W. Birmili, K. Weinhold, E. Brüggemann, T. Gnauk, A. Hausmann, G. Löschau, A. Wiedensohler, H. Herrmann |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 24 ; Nr. 11, no. 24 (2011-12-16), S.12697-12713 |
| Datensatznummer |
250010273
|
| Publikation (Nr.) |
 copernicus.org/acp-11-12697-2011.pdf |
|
|
|
|
|
| Zusammenfassung |
| Residential wood burning is becoming an increasingly important cause of air
quality problems since it has become a popular source of alternative energy
to fossil fuel. In order to characterize the contribution of residential
wood burning to local particle pollution, a field campaign was organized at
the village of Seiffen (Saxony, Germany). During this campaign, an Aerosol
Mass Spectrometer (AMS) was deployed in parallel to a PM1 high volume
filter sampler. The AMS mass spectra were analyzed using Positive Matrix
Factorization (PMF) to obtain detailed information about the organic aerosol
(OA). Biomass-burning organic aerosol (BBOA), Hydrocarbon-like organic
aerosol (HOA), and Oxygenated Organic Aerosol (OOA) were identified and
represented 20%, 17% and 62% of total OA, respectively.
Additionally, Polycyclic Aromatic Hydrocarbons (PAH) were measured by the
AMS with an average concentration of 10 ng m−3 and short term events of
extremely high PAH concentration (up to 500 ng m−3) compared to the
mean PAH value were observed during the whole measurement period. A
comparison with the results from PM1 filter samples showed that the
BBOA factor and the AMS PAH are good indicators of the total concentration
of the different monosaccharide anhydrides and PAH measured on the filter
samples. Based on its low correlation with CO and the low car traffic, the
HOA factor was considered to be related to residential heating using liquid
fuel. An influence of the time of the week (week vs. weekend) on the diurnal
profiles of the different OA components was observed. The weekdays were
characterized by two maxima; a first one early in the morning and a stronger
one in the evening. During the weekend days, the different OA components
principally reached only one maximum in the afternoon. Finally, the PAH
emitted directly from residential wood combustion was estimated to represent
1.5% of the total mass of the BBOA factor and around 62% of the total
PAH concentration measured at Seiffen. This result highlights the important
contribution of residential wood combustion to air quality and PAH emissions
at the sampling place, which might have a significant impact on human
health. Moreover, it also emphasizes the need for a better time resolution
of the chemical characterization of toxic particulate compounds in order to
provide more information on variations of the different sources through the
days as well as to better estimate the real human exposure. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|