Differentiation of the contribution of local resuspension from that of regional and remote sources on trace elements content in the atmospheric aerosol in the Mediterranean area |
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| Affiliation: | 1. Department of Physics, Faculty of Natural Sciences, University of Shkodra, Shkoder, Albania;2. Dept. of Signal Theory and Communications, Remote Sensing Lab. (RSLab), Universitat Politècnica de Catalunya, Barcelona, Spain;3. Ciències i Tecnologies de l''Espai - Centre de Recerca de l''Aeronàutica i de l''Espai / Institut d''Estudis Espacials de Catalunya (CTE-CRAE / IEEC), Universitat Politècnica de Catalunya, Barcelona, Spain;4. Dpt. of Applied Physics, Faculty of Sciences, University of Granada, Fuentenueva s/n, 18071, Granada, Spain;5. Andalusian Institute for Earth System Research (IISTA-CEAMA), Avda. del Mediterráneo s/n, 18006, Granada, Spain;6. Institute Pierre-Simon Laplace, CNRS-Ecole Polytechnique, Paris, France;7. Departamento de Física, Instituto de Ciências da Terra, Instituto de Investigação e Formação Avançada, Universidade de Évora, Évora, Portugal;8. Table Mountain Facility, NASA/Jet Propulsion Laboratory, California Institute of Technology, Wrightwood, California, USA |
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| Abstract: | For the determination of effects of contaminated crude soil on the content of trace elements in the atmospheric aerosol, trace elements in crude soil samples from within the area of influence of local resuspension were analysed. The obtained results were used for determining the contribution of local resuspension on contents of trace elements in the atmospheric aerosol using the enrichment factors (EF) method. The content of trace elements in a crude soil could arise from the geochemical background of the soil or from anthropogenic contributions. Analysis of the quantile showed that Cd, Se and Ni originate from local emission sources. PCA showed that four groups of sources contributed to the content of trace elements in PM in part of the receptor. Using EF, it was ascertained that local resuspension of crude soil particles had a dominant influence on the content of Fe, Mn and Ti in the atmospheric aerosol, and that local resuspension had no influence on the content of Se in the atmospheric aerosol. Dust originating from deserts of North Africa and Middle East, through long-range transport and through resuspension of settled dust particles, significantly contributes to the content of Fe, Mn and Ti in the atmospheric aerosol. Cd originated from contaminated crude soil. The other investigated elements originated partly from crude soil but also from some other emission sources in the region. |
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