Using aerosol light absorption measurements for the quantitative determination of wood burning and traffic emission contributions to particulate matter
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Authors
Sandradewi, Jisca
Prévôt, André S. H.
Szidat, Sönke
Perron, Nolwenn
Alfarra, M. Rami
Lanz, Valentin A.
Baltensperger, Urs
Author (Corporation)
Publication date
02.04.2008
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Type
01A - Journal article
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Parent work
Environmental Science & Technology
Special issue
DOI of the original publication
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Series
Series number
Volume
42
Issue / Number
9
Pages / Duration
3316-3323
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Publisher / Publishing institution
American Chemical Society
Place of publication / Event location
Washington, D.C.
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Abstract
A source apportionment study was performed for particulate matter in the small village of Roveredo, Switzerland, where more than 70% of the households use wood burning for heating purposes. A two-lane trans-Alpine highway passes through the village and contributes to the total aerosol burden in the area. The village is located in a steep Alpine valley characterized by strong and persistent temperature inversions during winter, especially from December to February. During two winter and one early spring campaigns, a seven-wavelength aethalometer, high volume (HIVOL) samplers, an Aerodyne quadrupole aerosol mass spectrometer (AMS), an optical particle counter (OPC), and a Sunset Laboratory OCEC analyzer were deployed to study the contribution of wood burning and traffic aerosols to particulate matter. A linear regression model of the carbonaceous particulate mass in the submicrometer size range CM(PM1) as a function of aerosol light absorption properties measured by the aethalometer is introduced to estimate the particulate mass from wood burning and traffic (PMwb, PMtraffic). This model was calibrated with analyses from the 14C method using HIVOL filter measurements. These results indicate that light absorption exponents of 1.1 for traffic and 1.8–1.9 for wood burning calculated from the light absorption at 470 and 950 nanometers should be used to obtain agreement of the two methods regarding the relative wood burning and traffic emission contributions to CM(PM1) and also to black carbon. The resulting PMwb and PMtraffic values explain 86% of the variance of the CM(PM1) and contribute, on average, 88 and 12% to CM(PM1), respectively. The black carbon is estimated to be 51% due to wood burning and 49% due to traffic emissions. The average organic carbon/total carbon (OC/TC) values were estimated to be 0.52 for traffic and 0.88 for wood burning particulate emissions.
Keywords
Subject (DDC)
330 - Wirtschaft
535 - Licht und phototechnische Phänomene
535 - Licht und phototechnische Phänomene
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ISBN
ISSN
0013-936X
1520-5851
1520-5851
Language
English
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No
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Publication status
Published
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Peer review of the complete publication
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Closed
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Citation
SANDRADEWI, Jisca, André S. H. PRÉVÔT, Sönke SZIDAT, Nolwenn PERRON, M. Rami ALFARRA, Valentin A. LANZ, Ernest WEINGARTNER und Urs BALTENSPERGER, 2008. Using aerosol light absorption measurements for the quantitative determination of wood burning and traffic emission contributions to particulate matter. Environmental Science & Technology. 2 April 2008. Bd. 42, Nr. 9, S. 3316–3323. DOI 10.1021/es702253m. Verfügbar unter: https://irf.fhnw.ch/handle/11654/46702