PMID- 23582096
OWN - NLM
STAT- MEDLINE
DCOM- 20140325
LR  - 20130507
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 47
IP  - 9
DP  - 2013 May 7
TI  - Climatic and biogeochemical controls on the remobilization and reservoirs of 
      persistent organic pollutants in Antarctica.
PG  - 4299-306
LID - 10.1021/es400471c [doi]
AB  - After decades of primary emissions, reservoirs of persistent organic pollutants 
      (POPs) have accumulated in soils and snow/ice in polar regions. These reservoirs 
      can be remobilized due to decreasing primary emissions or due to climate 
      change-driven warmer conditions. Results from a sampling campaign carried out at 
      Livingston Island (Antarctica) focusing on field measurements of air-soil 
      exchange of POPs show that there is a close coupling of the polychlorinated 
      biphenyls (PCBs) in the atmosphere and snow/ice and soils with a status close to 
      air-surface equilibrium to a net volatilization from Antarctic reservoirs. This 
      remobilization of PCBs is driven by changes in temperature and soil organic 
      matter (SOM) content, and it provides strong evidence that the current and future 
      remobilization and sinks of POPs are a strong function of the close coupling of 
      climate change and carbon cycling in the Antarctic region and this is not only 
      due to warming. Whereas an increase of 1  degrees C in ambient temperature due to climate 
      change would increase current Antarctic atmospheric inventories of PCBs by 
      21-45%, a concurrent increase of 0.5% SOM would counteract the influence of 
      warming by reducing the POP fugacity in soil. A 1  degrees C increase in Antarctic 
      temperatures will induce an increase of the soil-vegetation organic carbon and 
      associated POPs pools by 25%, becoming a net sink of POPs, and trapping up to 70 
      times more POPs than the amount remobilized to the atmosphere. Therefore, changes 
      in soil biogeochemistry driven by perturbations of climate may increase to a 
      larger degree the soil fugacity capacity than the decrease in air and soil 
      fugacity capacity due to higher temperatures. Future research should focus on 
      quantifying these remobilization fluxes and sinks for the Antarctic region.
FAU - Cabrerizo, Ana
AU  - Cabrerizo A
AD  - Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona 
      08034, Catalonia, Spain.
FAU - Dachs, Jordi
AU  - Dachs J
FAU - Barcelo, Damia
AU  - Barcelo D
FAU - Jones, Kevin C
AU  - Jones KC
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20130424
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Environmental Pollutants)
RN  - 0 (Organic Chemicals)
SB  - IM
MH  - Antarctic Regions
MH  - *Climate Change
MH  - Environmental Pollutants/*analysis
MH  - *Geology
MH  - Organic Chemicals/*analysis
MH  - Quality Control
EDAT- 2013/04/16 06:00
MHDA- 2014/03/26 06:00
CRDT- 2013/04/16 06:00
PHST- 2013/04/16 06:00 [entrez]
PHST- 2013/04/16 06:00 [pubmed]
PHST- 2014/03/26 06:00 [medline]
AID - 10.1021/es400471c [doi]
PST - ppublish
SO  - Environ Sci Technol. 2013 May 7;47(9):4299-306. doi: 10.1021/es400471c. Epub 2013 
      Apr 24.