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  • 1 Instituto Tecnológico e Nuclear, Reactor E.N. 10, 2686-953 Sacavém, Portugal
  • 2 University of Texas, Nuclear Engineering Teaching Laboratory, Pickle Research Campus R-9000, Austin, Texas, 78712, USA
  • 3 Instituto Tecnológico e Nuclear, Reactor E.N. 10, 2686-953 Sacavém, Portugal
  • 4 University of Texas, Nuclear Engineering Teaching Laboratory, Pickle Research Campus R-9000, Austin, Texas, 78712, USA
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Summary  

A set of 15 atmospheric aerosol samples was collected in an industrial area of Lisbon, Portugal and then analyzed by instrumental neutron activation analysis (INAA). Both fine and coarse aerosol samples were collected during November and December 2001 on polycarbonate filters with Gent samplers. The INAA methodology utilized both thermal and epithermal neutron irradiations. Compton suppressed and normal gamma-ray spectra were acquired simultaneously for each measurement and the elemental concentrations of 30 elements were determined. Enrichment factors, wind speed comparison and receptor modeling techniques were applied to obtain the different source contributions of the aerosols. Crustal, marine and anthropogenic sources were identified. The anthropogenic elements have origin mainly in the area close to the sampling site (<5 km), with the exception of Ca and V. A direct relationship was observed between the anthropogenic atmospheric aerosol concentrations and wind speed.