کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4426617 | 1309130 | 2009 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Polychlorinated biphenyls (PCBs) in the atmosphere of sub-alpine northern Italy Polychlorinated biphenyls (PCBs) in the atmosphere of sub-alpine northern Italy](/preview/png/4426617.png)
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. ∑7PCBs monthly averaged concentration varied from 31 to 76 pg m−3. Concentrations in the gas phase (21–72 pg m−3) were higher than those in the particulate phase (3–10 pg m−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 μg m−2 yr−1 ∑7PCBs yearly total wet deposition flux; 650–2400 pg L−1 rainwater concentrations).
Journal: Environmental Pollution - Volume 157, Issue 3, March 2009, Pages 1024–1032