Temporary Variations and Sources of Trace Metal and Radionuclides in Atmospheric Aerosols of Málaga (Spain)
2020
Gordo, Elisa | González, Rocío | Dueñas, Concepción | del Carmen Fernández, María | Cañete, Sergio | Cabello, María | Pérez, Manuel | Liger, Esperanza
The present study focuses on the simultaneous analysis of metallic species and radionuclide data from January 2009 to December 2011 in the dust deposited on filters in Málaga (Spain). Some metallic elements (Ca, Fe, K, Mg, Na, Zn, Pb, Cu, Ni) and radionuclides (⁷Be and ²¹⁰Pb) have been determined by inductively coupled plasma-mass spectroscopy and gamma spectrometry, respectively. For this analysis, daily variation of PM₁₀ mass concentration was additionally recorded at the nearest station belonging to the regional atmospheric pollution monitoring network. The comparison between ²¹⁰Pb, elemental lead, and PM₁₀ mass concentration reveals a different time variation for raining months, and an increase in the ²¹⁰Pb/Pb ratio indicates local sources of the particulate mass. Principal components analysis (PCA) applied to the datasets and calculation of enrichment factors relative to soil and seawater reveal that the atmospheric aerosol chemistry in this area of the Mediterranean is mostly influenced by crustal and marine sources rather than anthropogenic ones.
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