| Abstract |
Within the frame of AIRPARIF program ECPL (Environmental Chemical Processes Laboratory) analyzed metals in airborne particulate matters collected in Paris area. In the present work, an acid microwave procedure followed by an Inductively Coupled Plasma Mass Spectrometry was applied to measure 13 metal elements Αl, Ca, Σi, V, Cr, Fe, Ni, Mn, Cu, Zn, As Cd and Pb.
Aerosols samples are collected in two fractions (PM10 and PM2.5) and originated from three different monitor sites, (representing Suburban, Urban and Traffic environment). Sampling duration was 24 hour covering a period from September 2009 to September 2010. In total 2000 thousands samples were collected and analyzed.
Σhe concentrations values of toxic metals are below the thresholds set by the World Health Organization and compare well with the values reported for other European Cities. Most of the metals depict a similar spatial and temporary variability, with higher values in the traffic site and lower values in the suburban and urban sites. Metal elements originated from human activities such as Cd, Pb, V, Ni are mainly confined in PM2.5 fraction. Good correlations have been observed between Fe-Mn-Cu and Cd-Pb in every monitor station, (especially in the PM10 fraction). Applying the statistical program PCA (principal component analysis) two main sources influencing Paris area have been identified. „Human activities‟ and „Traffic‟. Contribution from „oil combustion‟ has been identified in the urban site. Finally, metals contribute significantly in the total PM concentrations contributing up to 18 % of their mass (12.5% in PM10 and 5.2% in PM2.5).
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Μεταλλικά στοιχεία σε αιωρούμενα σωματίδια του Παρισιού
