PMID- 23627767
OWN - NLM
STAT- MEDLINE
DCOM- 20140515
LR  - 20181202
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 47
IP  - 11
DP  - 2013 Jun 4
TI  - Polychlorinated biphenyls, hexachlorocyclohexanes and hexachlorobenzene in 
      seawater and phytoplankton from the Southern Ocean (Weddell, South Scotia, and 
      Bellingshausen Seas).
PG  - 5578-87
LID - 10.1021/es400030q [doi]
AB  - The Southern Ocean is one of the most pristine environments in the world, but is 
      nonetheless affected by inputs of persistent organic pollutants (POPs). In the 
      present work, we report the concentrations of hexachlorocyclohexanes (HCHs), 
      hexachlorobenzene (HCB), and 26 polychlorinated biphenyl (PCBs) congeners in 
      seawater and phytoplankton from samples obtained during three Antarctic cruises 
      in 2005, 2008, and 2009. The levels of PCBs, HCHs, and HCB are low in comparison 
      to the few previous reports for this region and studies from other oceans. The 
      long-term decline of POP concentrations in the Southern Ocean seawater since 
      early 1980 is consistent with half-lives of 3.4 and 5.7 years for HCHs and PCBs, 
      respectively. There is a large variability of PCBs, HCHs, and HCB concentrations 
      in water and phytoplankton within the Bransfield Strait, South Scotia, Weddell, 
      and Bellingshausen Seas that masks the differences between the studied Seas. 
      However, the variability of PCBs concentrations in phytoplankton is significantly 
      correlated with phytoplankton biomass, with lower concentrations in the most 
      productive waters. This trend is more apparent for the more hydrophobic 
      congeners, consistent with the role of settling fluxes of organic matter 
      decreasing the concentrations of hydrophobic POPs in productive waters. The 
      present work reports the most extensive data set on concentrations in seawater 
      and phytoplankton for the Southern Ocean, and points to the important 
      biogeochemical drivers, such as settling and degradation, influencing the 
      occurrence of POPs in the ocean.
FAU - Galban-Malagon, Cristobal J
AU  - Galban-Malagon CJ
AD  - Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona 
      08034, Catalunya, Spain.
FAU - Del Vento, Sabino
AU  - Del Vento S
FAU - Berrojalbiz, Naiara
AU  - Berrojalbiz N
FAU - Ojeda, Maria-Jose
AU  - Ojeda MJ
FAU - Dachs, Jordi
AU  - Dachs J
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20130516
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Pesticides)
RN  - 0 (Water Pollutants, Chemical)
RN  - 4Z87H0LKUY (Hexachlorobenzene)
RN  - 59NEE7PCAB (Hexachlorocyclohexane)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Antarctic Regions
MH  - Hexachlorobenzene/*analysis
MH  - Hexachlorocyclohexane/*analysis
MH  - Oceans and Seas
MH  - Pesticides/analysis
MH  - Phytoplankton/*chemistry
MH  - Polychlorinated Biphenyls/*analysis
MH  - Seawater/analysis
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2013/05/01 06:00
MHDA- 2014/05/16 06:00
CRDT- 2013/05/01 06:00
PHST- 2013/05/01 06:00 [entrez]
PHST- 2013/05/01 06:00 [pubmed]
PHST- 2014/05/16 06:00 [medline]
AID - 10.1021/es400030q [doi]
PST - ppublish
SO  - Environ Sci Technol. 2013 Jun 4;47(11):5578-87. doi: 10.1021/es400030q. Epub 2013 
      May 16.