Trends in motor-vehicle related air pollutants in central London |
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Authors: | R. A. Field J. R. Brown M. E. Goldstone J. N. Lester R. Perry |
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Affiliation: | (1) Environmental and Water Resources Engineering, Department of Civil Engineering, Imperial College of Science, Technology and Medicine, SW7 2BU London, UK;(2) Consultants in Environmental Sciences Limited, Maunsell House, 160 Croydon Road, BR3 4DE Beckenham, Kent, UK;(3) Atmospheric Measurements and Processes, Culham Laboratory, AEA Technology, NETCEN, Culham, OX14 3DB Abingdon, Oxfordshire, UK |
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Abstract: | Results of intermittent monitoring of six aromatic hydrocarbons (benzene, toluene, ethyl-benzene, m-xylene, p-xylene and o-xylene), carbon monoxide and oxides of nitrogen over a thirteen year period at a site in central London (Exhibition Road) are presented. Four monitoring regimes were undertaken; namely, 1979, 1982/83, 1986/87 and 1991/92. The summertime daytime mean ambient concentrations of the measured parameters at this site are presented. The reported concentrations show a reduction from 1979 to 1992 by approximately a factor of two, despite national increases in motor fuel consumption and the volume of traffic. Relevant European Community legislation covering emissions from motor-vehicles are outlined and comparisons are made with emissions from motor vehicles predicted from the UK national inventory. The importance of the frequency of measurements was also noted. |
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