Polychlorinated biphenyls (PCBs) in the atmosphere of sub-alpine northern Italy

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 stationwas set up at the JRC Ispra EMEP site (Italy).We present and discuss a one-year data set (2005–2006) on PCB air concentrations.P7PCBs 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 mgm-2 yr-1 sum7PCBs yearly total wet deposition flux; 650–2400 pg L-1 rainwater concentrations).
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Javier Castro-Jiménez, S. Dueri, J. Eisenreich, G. Mariani, H. Skejo, et al.. Polychlorinated biphenyls (PCBs) in the atmosphere of sub-alpine northern Italy. Environmental Pollution, Elsevier, 2009, 157 (3), pp.1024-1032. ⟨10.1016/j.envpol.2008.10.007⟩. ⟨hal-02138512⟩



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