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Photochemical generation of secondary particles in the United Kingdom – discussion.

Rose, N. and Derwent, R. G. and Wallis, M. and Hewitt, CN and Stewart, H. (2000) Photochemical generation of secondary particles in the United Kingdom – discussion. Philosophical Transactions of the Royal Society of London A, 358 (1775). pp. 2656-2657. ISSN 0264-3820

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Abstract

While much of the suspended particulate matter found in the ambient air in urban areas has been emitted directly into the atmosphere, some has been formed there by photochemical reactions from gaseous precursor species. Two major components of this secondary particulate matter have been selected for detailed study in the United Kingdom context. These are particulate sulphate, formed from the precursor, sulphur dioxide, and secondary organic aerosols, formed from oxidation of terpenes and aromatic hydrocarbons. A Lagrangian dispersion model has been used to describe the emissions, transport and transformation of SO2 into particulate sulphate. The origins of the particulate sulphate are delineated in two separate pollution episodes which occurred during 1996. A photochemical trajectory model is used to describe the formation of secondary organic aerosols and to assess the relative contributions from natural biogenic and man-made precursor sources during conditions typical of photochemical pollution episodes.

Item Type: Article
Journal or Publication Title: Philosophical Transactions of the Royal Society of London A
Uncontrolled Keywords: Suspended Particulate Matter Particulate Sulphate Secondary Organic Aerosols Terpenes Aromatic Hydrocarbons
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 21660
Deposited By: ep_ss_importer
Deposited On: 04 Feb 2009 10:06
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 15:50
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/21660

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