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| Titel |
Comparison of methods for evaluation of wood smoke and estimation of UK ambient concentrations |
| VerfasserIn |
R. M. Harrison, D. C. S. Beddows, L. Hu, J. Yin |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 12, no. 17 ; Nr. 12, no. 17 (2012-09-13), S.8271-8283 |
| Datensatznummer |
250011446
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| Publikation (Nr.) |
 copernicus.org/acp-12-8271-2012.pdf |
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| Zusammenfassung |
| Airborne concentrations of the wood smoke tracers, levoglucosan and fine
potassium have been measured at urban and rural sites in the United Kingdom
alongside measurements with a multi-wavelength aethalometer. The UK sites,
and especially those in cities, show low ratios of levoglucosan to potassium
in comparison to the majority of published data. It is concluded that there
may be two distinct source types, one from wood stoves and fireplaces with a
high organic carbon content, best represented by levoglucosan, the other
from larger, modern appliances with a very high burn-out efficiency, best
represented by potassium. Based upon levoglucosan concentrations and a
conversion factor of 11.2 from levoglucosan to wood smoke mass, average
concentrations of wood smoke including winter and summer sampling periods
are 0.23 μg m−3 in Birmingham and 0.33 μg m−3 in
London, well below concentrations typical of other northern European urban
areas. There may be a further contribution from sources of potassium-rich
emissions amounting to an estimated 0.08 μg m−3 in Birmingham
and 0.30 μg m−3 in London. Concentrations were highly correlated
between two London sites separated by 4 km suggesting that a regional source
is responsible. Data from the aethalometer are either supportive of these
conclusions or suggest higher concentrations, depending upon the way in
which the data are analysed. |
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