Abstract
The chemical characteristics and the grain-size patterns of the mineral fraction in Sardinian aerosols and precipitation were highlighted by means of Q-Mode Factor Analysis (Q-FA) on major elements (Al, Ca, Fe, Mg, Na, K, Si), and trace metal data (Cd, Cr, Pb, Zn). Three factors explained more than 95% of the variability: the first two representing the background aerosols (Mediterranean) and local inputs from different source regions (Sardinian) respectively, and the third one being the Saharan factor. Grain-size modes of background and local aerosols were 1 and 2 μm respectively, whilst Saharan dust mode was in the range 2–8 μm. Mediterranean background aerosols in Sardinia showed a 3 to 25-fold decrease in Efcrust values for Cd, Zn, Pb and Cr compared with coastal stations in the West and in Corsica. Local inputs resulted mainly enriched in Pb and Zn, which could represent Sardinian sources to the Central Mediterranean Sea.
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Guerzoni, S., Quarantotto, G., Cesari, G., Molinaroli, E., Rampazzo, G., Le Bolloch, O. (1996). Trace Metal Composition and Grain-Size of Particulates in Aerosols and Precipitation Collected in N.W. Mediterranean (39° N, 9° E): A Multivariate Analysis. In: Guerzoni, S., Chester, R. (eds) The Impact of Desert Dust Across the Mediterranean. Environmental Science and Technology Library, vol 11. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-3354-0_33
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DOI: https://doi.org/10.1007/978-94-017-3354-0_33
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