PMID- 17706251
OWN - NLM
STAT- MEDLINE
DCOM- 20071213
LR  - 20131121
IS  - 0025-326X (Print)
IS  - 0025-326X (Linking)
VI  - 54
IP  - 10
DP  - 2007 Oct
TI  - Air--sea gaseous exchange of PCB at the Venice lagoon (Italy).
PG  - 1634-44
AB  - Water bodies are important storage media for persistent organic pollutants (POPs) 
      such as polychlorinated biphenyls (PCBs) and this function is increased in 
      coastal regions because their inputs are higher than those to the open sea. The 
      air-water interface is extensively involved with the global cycling of PCBs 
      because it is the place where they accumulate due to depositional processes and 
      where they may be emitted by gaseous exchange. In this work the parallel 
      collection of air, microlayer and sub-superficial water samples was performed in 
      July 2005 at a site in the Venice lagoon to evaluate the summer gaseous flux of 
      PCBs. The total concentration of PCBs (sum of 118 congeners) in air varies from 
      87 to 273 pg m(-3), whereas in the operationally defined dissolved phase of 
      microlayer and sub-superficial water samples it varies from 159 to 391 pg L(-1). 
      No significant enrichment of dissolved PCB into the microlayer has been observed, 
      although a preferential accumulation of most hydrophobic congeners occurs. Due to 
      this behaviour, we believe that the modified two-layer model was the most 
      suitable approach for the evaluation of the flux at the air-sea interface, 
      because it takes into account the influence of the microlayer. From its 
      application it appears that PCB volatilize from the lagoon waters with a net flux 
      varying from 58 to 195 ng m(-2)d(-1) (uncertainty: +/-50-64%) due to the strong 
      influence of wind speed. This flux is greater than those reported in the 
      literature for the atmospheric deposition and rivers input and reveals that PCB 
      are actively emitted from the Venice lagoon in summer months.
FAU - Manodori, L
AU  - Manodori L
AD  - Environmental Sciences Department, Ca' Foscari University of Venice, 30123 
      Venice, Italy.
FAU - Gambaro, A
AU  - Gambaro A
FAU - Moret, I
AU  - Moret I
FAU - Capodaglio, G
AU  - Capodaglio G
FAU - Cescon, P
AU  - Cescon P
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20070813
PL  - England
TA  - Mar Pollut Bull
JT  - Marine pollution bulletin
JID - 0260231
RN  - 0 (Water Pollutants, Chemical)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Air/analysis
MH  - Environmental Monitoring/*methods
MH  - Gas Chromatography-Mass Spectrometry/methods
MH  - Italy
MH  - Oceans and Seas
MH  - Polychlorinated Biphenyls/*analysis
MH  - Seawater/*analysis
MH  - Temperature
MH  - Time Factors
MH  - Water Pollutants, Chemical/*analysis
MH  - Wind
EDAT- 2007/08/21 09:00
MHDA- 2007/12/14 09:00
CRDT- 2007/08/21 09:00
PHST- 2007/03/29 00:00 [received]
PHST- 2007/06/28 00:00 [revised]
PHST- 2007/06/29 00:00 [accepted]
PHST- 2007/08/21 09:00 [pubmed]
PHST- 2007/12/14 09:00 [medline]
PHST- 2007/08/21 09:00 [entrez]
AID - S0025-326X(07)00245-7 [pii]
AID - 10.1016/j.marpolbul.2007.06.012 [doi]
PST - ppublish
SO  - Mar Pollut Bull. 2007 Oct;54(10):1634-44. doi: 10.1016/j.marpolbul.2007.06.012. 
      Epub 2007 Aug 13.