Please use this identifier to cite or link to this item: https://ktisis.cut.ac.cy/handle/10488/7791
Title: PM10 composition during an intense Saharan dust transport event over Athens (Greece)
Authors: Remoundaki, Emmanouela 
Bourliva, Anna 
Mamouri, Rodanthi-Elisavet 
Major Field of Science: Social Sciences
Field Category: Computer and Information Sciences;SOCIAL SCIENCES
Keywords: Clays;Heavy metals;PM10;Saharan dust;SEM-EDX;Sulfur
Issue Date: 15-Sep-2011
Source: Science of the Total Environment, 2011, vol. 409, no. 20, pp. 4361-4372
Volume: 409
Issue: 20
Start page: 4361
End page: 4372
Journal: Science of the Total Environment 
Abstract: The influence of Saharan dust on the air quality of Southern European big cities became a priority during the last decade. The present study reports results on PM 10 monitored at an urban site at 14m above ground level during an intense Saharan dust transport event. The elemental composition was determined by Energy Dispersive X-ray Fluorescence Spectrometry (EDXRF) for 12 elements: Si, Al, Fe, K, Ca, Mg, Ti, S, Ni, Cu, Zn and Mn. PM 10 concentrations exceeded the EU limit (50μg/m 3) several times during the sampling period. Simultaneous maxima have been observed for the elements of crustal origin. The concentrations of all the elements presented a common maximum, corresponding to the date where the atmosphere was heavily charged with particulate matter permanently for an interval of about 10h. Sulfur and heavy metal concentrations were also associated to local emissions. Mineral dust represented the largest fraction of PM 10 reaching 79%. Seven days back trajectories have shown that the air masses arriving over Athens, originated from Western Sahara. Scanning Electron Microscopy coupled with Energy Dispersive X-ray analysis (SEM-EDX) revealed that particle agglomerates were abundant, most of them having sizes <2μm. Aluminosilicates were predominant in dust particles also rich in calcium which was distributed between calcite, dolomite, gypsum and Ca-Si particles. These results were consistent with the origin of the dust particles and the elemental composition results. Sulfur and heavy metals were associated to very fine particles <1μm.
ISSN: 1879-1026
DOI: 10.1016/j.scitotenv.2011.06.026
Rights: © Elsevier
Type: Article
Affiliation: National Technical University Of Athens 
Affiliation : National Technical University Of Athens 
Aristotle University of Thessaloniki 
Hellenic Open University 
Cyprus University of Technology 
Appears in Collections:Άρθρα/Articles

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