http://www.cnr.it/ontology/cnr/individuo/prodotto/ID20039
Atmospheric PCB Concentrations at Terra Nova Bay, Antarctica. (Articolo in rivista)
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- Label
- Atmospheric PCB Concentrations at Terra Nova Bay, Antarctica. (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
Gambaro A., Manodori L., Zangrando R., Cincinelli A., Capodaglio G., Cescon P. (2005)
Atmospheric PCB Concentrations at Terra Nova Bay, Antarctica.
in Environmental science & technology
(literal)
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- Gambaro A., Manodori L., Zangrando R., Cincinelli A., Capodaglio G., Cescon P. (literal)
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- In this study we increase the limited atmospheric database on PCB in remote areas by reporting PCB concentrations during the austral summer at a site in Terra Nova Bay, Antarctica and we hypothesize their possible sources. (literal)
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- Concentrations of gas-phase polychlorobiphenyls (PCB) were studied over an austral summer at a site in Terra Nova Bay, Antarctica. The mean PCB concentration obtained in this study was lower than those reported in previous Antarctic studies. In consideration of the low PCB concentrations observed, the study with the wind roses, the regression between ln P(PCB) and T-1 and the distribution of congeners we can hypothesize that PCB local source contributions are not very important whereas long-distance transport is the prevalent factor bringing PCB to Terra Nova Bay. (literal)
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- Environmental Sciences Department, Ca' Foscari University of Venice, 30123 Venice, Italy
Institute for the Dynamics of Environmental Processes, C.N.R., 30123 Venice, Italy
Department of Chemistry, University of Florence, 50019 Florence, Italy (literal)
- Titolo
- Atmospheric PCB Concentrations at Terra Nova Bay, Antarctica. (literal)
- Abstract
- Concentrations of gas-phase polychlorobiphenyls (PCBs) were studied over an austral summer at a site in Terra Nova Bay, Antarctica. Gas-phase concentrations of individual PCB congeners in the atmosphere of Terra Nova Bay ranged from below the detection limit to 0.25 pg m-3, with a mean concentration of PCB of 1.06 pg m-3. The PCB profile was dominated by lower-chlorinated PCB congeners; in fact >78% of the total PCB content was due to congeners with 1-4 chlorine atoms and only about 10% with 5-7 chlorines, whereas higher-chlorinated PCB congeners were below detection limits. The mean PCB concentration obtained in this study were lower than those reported in previous Antarctic studies. Temporal concentration profiles of PCB do not correspond to seasonal temperature changes. In consideration of the low PCB concentrations observed, the studies with the wind roses, the regression between ln P(PCB) and T-1, and the distribution of congeners, we can hypothesize that PCB local source contributions are not very important, whereas long-distance transport is the prevalent factor bringing PCBs to Terra Nova Bay. (literal)
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