ACP Atmospheric Chemistry and Physics ACP 1680-7324 Copernicus GmbH Göttingen, Germany 10.5194/acp-9-2597-2009 Elemental content of PM<sub>2.5</sub> aerosol particles collected in Göteborg during the Göte-2005 campaign in February 2005 Boman J. 1 Gatari M. J. 2 Janhäll S. 1 3 Shannigrahi A. S. 1 Wagner A. 1 4 Department of Chemistry, Atmospheric science, University of Göteborg, 412 96 Göteborg, Sweden Institute of Nuclear Science and Technology, University of Nairobi, P.O. Box 30179-00100, Nairobi, Kenya now at: Max Planck Institute for Chemistry, Dept. Biogeochemistry, J.-J.-Becherweg 27, 55128 Mainz, Germany now at: Department of Applied Physics, Condensed matter physics, Chalmers University of Technology, 412 96 Göteborg, Sweden 09 04 2009 9 7 2597 2606 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.atmos-chem-phys.net/9/2597/2009/acp-9-2597-2009.html The full text article is available as a PDF file from http://www.atmos-chem-phys.net/9/2597/2009/acp-9-2597-2009.pdf

The Göte–2005 measurement campaign aimed at studying the influence of the winter thermal inversions on urban air pollution. Elemental speciation of PM<sub>2.5</sub> aerosol particles, collected on Teflon filters at three urban sites and one rural site in the Göteborg region, was a major part of the study. Trace element analysis was done by Energy Dispersive X-Ray Fluorescence (EDXRF) spectrometry and the concentrations of S, Cl, K, Ca, Ti, V, Mn, Fe, Ni, Cu, Zn, Br and Pb were determined. The elemental content of the particles, local wind speed and direction, and backward trajectories were used to investigate possible sources for the pollutants. We concluded that S, V, Ni, Br, and Pb had their main sources outside the central Göteborg area, since elevated concentrations of these elements were not observed during an inversion episode. Sea traffic and harbour activities were identified, primarily by the S and V content of the particles. This study showed that the elemental analysis by EDXRF presents valuable information for tracing the origin of air masses arriving at a measurement site.

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