Occurrence of PAH in the seasonal snowpack of the Eastern Italian Alps.
PAH concentrations have been determined in 47 seasonal snowpack samples collected in the Valbelluna valley and in the Bellunesi Dolomites National Park, in the Italian North-Eastern Alps, during the winter of 2005. The SigmaPAH concentration in high-altitude alpine sites (above 1700 m) was 32+/-20 ng/kg while in valley bottom urban areas it was 165+/-54 ng/kg with maximum values of 290 ng/kg. The GIS mapping technique was employed to produce a PAH spatial distribution. The urbanized Valbelluna valley, and in particular the SW part, had the highest accumulation of all PAH, with values an order of magnitude more than those in rural and alpine areas. This behaviour is consistent with urban air quality data, and is due to geo-morphological and meteorological factors such as the deeper shape of the valley at the position of the town of Feltre and the low altitude of the boundary layer during the winter season.
Gabrieli
Jacopo
J
Chemical Science Department, University of Padova, via Marzolo 1/A, 35100 Padua, Italy.
Decet
Fabio
F
Luchetta
Alberto
A
Valt
Mauro
M
Pastore
Paolo
P
Barbante
Carlo
C
D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis*; D007558:Italy; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012914:Snow / Q000737:chemistry*
D004785:Environmental Pollutants; D011084:Polycyclic Aromatic Hydrocarbons