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Fossil and non-foss...
Fossil and non-fossil sources of organic carbon (OC) and elemental carbon (EC) in Göteborg, Sweden
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- Szidat, S. (författare)
- Paul Scherrer Institut,Universität Bern,University of Bern
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- Ruff, M. (författare)
- Universität Bern,University of Bern,Paul Scherrer Institut
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- Perron, N. (författare)
- Paul Scherrer Institut
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- Wacker, L. (författare)
- Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH)
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- Synal, H.-A. (författare)
- Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH)
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- Hallquist, Mattias, 1969 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg
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- Shannigrahi, Ardhendu Sekhar, 1965 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg
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- Yttri, K. E. (författare)
- Norsk institutt for luftforskning (NILU),Norwegian Institute for Air Research (NILU)
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- Dye, C. (författare)
- Norsk institutt for luftforskning (NILU),Norwegian Institute for Air Research (NILU)
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- Simpson, David, 1961 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2009-03-02
- 2009
- Engelska.
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Ingår i: Atmospheric Chemistry and Physics. - : Copernicus GmbH. - 1680-7316 .- 1680-7324. ; 9:5, s. 1521-1535
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Abstract
Ämnesord
Stäng
- Particulate matter was collected at an urban site in Göteborg (Sweden) in February/March 2005 and in June/July 2006. Additional samples were collected at a rural site for the winter period. Total carbon (TC) concentrations were 2.1–3.6μgm−3, 1.8–1.9μgm−3, and 2.2– 3.0μgm−3 for urban/winter, rural/winter, and urban/summer conditions, respectively. Elemental carbon (EC), organic carbon (OC), water-insoluble OC (WINSOC), and watersoluble OC (WSOC) were analyzed for 14C in order to distinguish fossil from non-fossil emissions. As wood burning is the single major source of non-fossil EC, its contribution can be quantified directly. For non-fossil OC, the wood-burning fraction was determined independently by levoglucosan and 14C analysis and combined using Latin-hypercube sampling (LHS). For the winter period, the relative contribution of EC from wood burning to the total EC was >3 times higher at the rural site compared to the urban site, whereas the absolute concentrations of EC from wood burning were elevated only moderately at the rural compared to the urban site. Thus, the urban site is substantially more influenced by fossil EC emissions. For summer, biogenic emissions dominated OC concentrations most likely due to secondary organic aerosol(SOA) formation. During both seasons, a more pronounced fossil signal was observed for G¨oteborg than has previously been reported for Zurich, Switzerland. Analysis of air mass origin using back trajectories suggests that the fossil impact was larger when local sources dominated, whereas longrange transport caused an enhanced non-fossil signal. In comparison to other European locations, concentrations of levoglucosan and other monosaccharide anhydrides were low for the urban and the rural site in the area of G¨oteborg during winter.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
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Szidat, S.
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Ruff, M.
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Perron, N.
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Wacker, L.
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Synal, H.-A.
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Hallquist, Matti ...
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Shannigrahi, Ard ...
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Yttri, K. E.
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Dye, C.
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Simpson, David, ...
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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Atmospheric Chem ...
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Göteborgs universitet
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Chalmers tekniska högskola