Integrated single particle-bulk chemical approach for the characterization of local and long range sources of particulate pollutants

► Combined bulk and SEM-EDS chemical analyses of ground and tethered balloon PM samples. ► Statistical treatment of the results by PCA/APCS and cluster analysis. ► Discrimination between local sources and long range dust intrusions. ► Significant contribution by Saharan and secondary aerosol dust intrusions to total PM. ► Reconstruction of the pattern and dynamic evolution of the lower troposphere.