%0 Journal Article %1 Harrison20044531 %A Harrison, Roy M. %A Jones, Alan M. %A Lawrence, Royston G. %D 2004 %J Atmospheric Environment %K composition pm10 pollution urban %N 27 %P 4531 - 4538 %R http://dx.doi.org/10.1016/j.atmosenv.2004.05.022 %T Major component composition of \PM10\ and PM2.5 from roadside and urban background sites %U http://www.sciencedirect.com/science/article/pii/S1352231004005011 %V 38 %X Using dichotomous Partisol samplers, airborne particulate matter has been collected and analysed as PM2.5 and PM10. The instruments were deployed at four sets of paired roadside and urban background locations, three in London and one in Birmingham (UK) and the sampling protocols aimed to give equal weight to all seasons of the year. In addition to determination of sample mass, concentrations have been determined for major chemical components as follows: sulphate, nitrate, chloride, organic carbon, elemental carbon, iron and calcium. The measured concentrations have been converted to equivalent quantities of ammonium sulphate, ammonium nitrate (in PM2.5), sodium nitrate (in PM2.5–10), sodium chloride, elemental carbon, carbon compounds, gypsum and iron-rich dusts. The mass of strongly bound water has also been calculated following the mass closure methodology of Harrison et al. (Atmos. Environ. 37 (2003) 4927). Examination of the difference between roadside (mean 34.7 μg m−3 PM10) and corresponding urban background (mean 23.2 μg m−3 PM10) samples indicates average mass increments of 11.5 μg m−3 of \PM10\ and 8.0 μg m−3 of PM2.5 for the four site pairs, and that the roadside particle increment is comprised very largely of elemental carbon, organic compounds and iron-rich dusts. The major component composition lies somewhere between that reported as typical of the eastern and western US. A comparison with PM2.5 and \PM15\ sampled in Leeds (UK) in 1982 shows a decline in all major constituents except mineral dusts (PM2.5 only). In a comparison of data for days with \PM10\ above the \EU\ 24-h Limit Value of 50 μg m−3 with data from all days, the component showing the greatest ratio between high pollution days and all days is fine particle nitrate.

@article{Harrison20044531, abstract = {Using dichotomous Partisol samplers, airborne particulate matter has been collected and analysed as PM2.5 and PM10. The instruments were deployed at four sets of paired roadside and urban background locations, three in London and one in Birmingham (UK) and the sampling protocols aimed to give equal weight to all seasons of the year. In addition to determination of sample mass, concentrations have been determined for major chemical components as follows: sulphate, nitrate, chloride, organic carbon, elemental carbon, iron and calcium. The measured concentrations have been converted to equivalent quantities of ammonium sulphate, ammonium nitrate (in PM2.5), sodium nitrate (in PM2.5–10), sodium chloride, elemental carbon, carbon compounds, gypsum and iron-rich dusts. The mass of strongly bound water has also been calculated following the mass closure methodology of Harrison et al. (Atmos. Environ. 37 (2003) 4927). Examination of the difference between roadside (mean 34.7 μg m−3 PM10) and corresponding urban background (mean 23.2 μg m−3 PM10) samples indicates average mass increments of 11.5 μg m−3 of \{PM10\} and 8.0 μg m−3 of PM2.5 for the four site pairs, and that the roadside particle increment is comprised very largely of elemental carbon, organic compounds and iron-rich dusts. The major component composition lies somewhere between that reported as typical of the eastern and western US. A comparison with PM2.5 and \{PM15\} sampled in Leeds (UK) in 1982 shows a decline in all major constituents except mineral dusts (PM2.5 only). In a comparison of data for days with \{PM10\} above the \{EU\} 24-h Limit Value of 50 μg m−3 with data from all days, the component showing the greatest ratio between high pollution days and all days is fine particle nitrate. }, added-at = {2016-11-14T08:30:49.000+0100}, author = {Harrison, Roy M. and Jones, Alan M. and Lawrence, Royston G.}, biburl = {https://www.bibsonomy.org/bibtex/2a16296612b28a85f9844140598bda6b3/lautenschlager}, description = {Major component composition of PM10 and PM2.5 from roadside and urban background sites}, doi = {http://dx.doi.org/10.1016/j.atmosenv.2004.05.022}, interhash = {befcef12d9a45e2c4fb27fa7a6cd248b}, intrahash = {a16296612b28a85f9844140598bda6b3}, issn = {1352-2310}, journal = {Atmospheric Environment }, keywords = {composition pm10 pollution urban}, number = 27, pages = {4531 - 4538}, timestamp = {2016-11-14T08:30:49.000+0100}, title = {Major component composition of \{PM10\} and PM2.5 from roadside and urban background sites }, url = {http://www.sciencedirect.com/science/article/pii/S1352231004005011}, volume = 38, year = 2004 }