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  • Title: Polychlorinated biphenyls (PCBs) in the atmosphere of sub-alpine northern Italy.
    Author: Castro-Jiménez J, Dueri S, Eisenreich SJ, Mariani G, Skejo H, Umlauf G, Zaldívar JM.
    Journal: Environ Pollut; 2009 Mar; 157(3):1024-32. PubMed ID: 19027207.
    Abstract:
    The main objective of this work was to assess the atmospheric concentrations and seasonal variations of selected POPs in a sub-alpine location where few data are available. A monitoring and research station was set up at the JRC Ispra EMEP site (Italy). We present and discuss a one-year data set (2005-2006) on PCB air concentrations. Sigma 7PCBs monthly averaged concentration varied from 31 to 76 pgm(-3). Concentrations in the gas phase (21-72 pgm(-3)) were higher than those in the particulate phase (3-10 pgm(-3)). Advection of air masses and re-volatilization from local sources seem to play a dominant role as drivers of PCB atmospheric concentrations in the area. Indications of seasonal variation affecting PCB congener patterns and the gas/particulate partitioning were found. Modeling calculations suggest a predominant importance of the wet deposition in this region (1 microgm(-2)yr(-1) Sigma 7PCBs yearly total wet deposition flux; 650-2400 pgL(-1) rainwater concentrations).
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