Abstract
The goal of this research is to determine trends and sources of airborne particulates in the centre of Lisbon, by using speciated particulate-matter data and back-trajectory analyses. Results showed that, in 2007, the annual PM2.5 concentration exceeded the World Health Organization recommended levels. PM2.5 diurnal variability and the ratio between weekdays’ and weekends’ concentrations indicated that traffic contributed highly to decreasing air quality. Air back-trajectory analysis showed that maritime air mass transport had a significant role on air quality in Lisbon, promoting the decrease of anthropogenic aerosol concentrations.
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We gratefully acknowledge Fundação para a Ciência e a Tecnologia (FCT, Portugal) for funding the projects POCI/AMB/55878/2004 and PPCDT/AMB/55878/2004.
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Almeida, S.M., Freitas, M.C., Repolho, C. et al. Characterizing air particulate matter composition and sources in Lisbon, Portugal. J Radioanal Nucl Chem 281, 215–218 (2009). https://doi.org/10.1007/s10967-009-0113-8
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DOI: https://doi.org/10.1007/s10967-009-0113-8