Atmos. Chem. Phys. Discuss., 11, 11579-11610, 2011
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Diurnal variations of residential particulate wood burning emissions and their contribution to the concentration of Polycyclic Aromatic Hydrocarbons (PAHs)
L. Poulain1, Y. Iinuma1, K. Müller1, W. Birmili1, K. Weinhold1, E. Brüggemann1, T. Gnauk1, A. Hausmann2, G. Löschau2, A. Wiedensohler1, and H. Herrmann1
1Leibniz-Institut für Troposphärenforschung, Permoserstr. 15, 04318 Leipzig, Germany
2Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie (LfULG) Pf 54 01 37, 01311 Dresden, Germany

Abstract. 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), Low-volatility oxygenated organic aerosol (LV-OOA) and Semi-volatile oxygenated organic aerosol (SV-OOA) were identified. Additionally, Polycyclic Aromatic Hydrocarbons (PAH) were measured by the AMS and short term events of extremely high PAH concentration 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 correlation with CO and the low car traffic, the HOA factor was considered to be related to residential heating using liquid fuel. A clear impact of the week and weekend days 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 one maxima early in the afternoon. Finally, the PAH emitted directly from residential wood combustion was estimated to represent 1.5% of the total mass of 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 about variations of the different sources through the days as well as to better estimate the real human exposure.

Citation: Poulain, L., Iinuma, Y., Müller, K., Birmili, W., Weinhold, K., Brüggemann, E., Gnauk, T., Hausmann, A., Löschau, G., Wiedensohler, A., and Herrmann, H.: Diurnal variations of residential particulate wood burning emissions and their contribution to the concentration of Polycyclic Aromatic Hydrocarbons (PAHs), Atmos. Chem. Phys. Discuss., 11, 11579-11610, doi:10.5194/acpd-11-11579-2011, 2011.
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