PMID- 16568756
OWN - NLM
STAT- MEDLINE
DCOM- 20060727
LR  - 20190715
IS  - 0013-936X (Print)
IS  - 0013-936X (Linking)
VI  - 40
IP  - 5
DP  - 2006 Mar 1
TI  - Persistent organic pollutants in the equatorial atmosphere over the open Indian 
      Ocean.
PG  - 1454-61
AB  - Twelve air samples collected over the Indian Ocean by a high volume air sampler 
      between August 2004 and August 2005 were analyzed for selected polychlorinated 
      biphenyl (PCB) congeners and organochlorine pesticides. The region of the Indian 
      Ocean and adjacent countries is likely to be acting as a source of selected POPs 
      to the global environment. Data were compared with those reported for the last 30 
      years to examine historical trends of selected persistent organic pollutants 
      (POPs) over the Indian Ocean. Compound concentrations were influenced by the 
      proximity to land and air mass origins. Higher concentrations of atmospheric 
      sigmaPCBs (50-114 pg m(-3)) were found on the remote islands of Chagos 
      Archipelago and Gan, Maldives, and in the proximity of Jakarta, Indonesia, and 
      Singapore. Military activities and unregulated waste combustion were identified 
      as possible sources for atmospheric PCB contaminations at the more remote areas. 
      The highest concentrations of organochlorine pesticides were found adjacent to 
      the coastline of Sumatra and Singapore, where sigmaDDTs 
      (dichlorodiphenyltrichloroethane) and sigmaHCHs (hexacyclohexanes) were as high 
      as 30 and 100 pg m(-3), respectively. A comparison study for the last 30 years 
      over six regions of the Indian Ocean showed that the concentrations of 
      organochlorine pesticides have declined significantly, by a magnitude of two, 
      since the mid 1970s, but were highest at the beginning of the 1990s. The time 
      trend of PCB contamination in the atmosphere over the Indian Ocean is less 
      apparent. The decline of atmospheric POPs over the Indian Ocean may be due to 
      international regulation of the use of these compounds.
FAU - Wurl, Oliver
AU  - Wurl O
AD  - Department of Chemical and Biomolecular Engineering, National University of 
      Singapore, 4 Engineering Drive 4, Republic of Singapore 117576. 
      oliverwurl@nus.edu.sg
FAU - Potter, John Robert
AU  - Potter JR
FAU - Obbard, Jeffrey Philip
AU  - Obbard JP
FAU - Durville, Caroline
AU  - Durville C
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Air Pollutants)
RN  - 0 (Organic Chemicals)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - Atmosphere
MH  - Gas Chromatography-Mass Spectrometry
MH  - Organic Chemicals/*analysis
MH  - Quality Control
EDAT- 2006/03/30 09:00
MHDA- 2006/07/28 09:00
CRDT- 2006/03/30 09:00
PHST- 2006/03/30 09:00 [pubmed]
PHST- 2006/07/28 09:00 [medline]
PHST- 2006/03/30 09:00 [entrez]
AID - 10.1021/es052163z [doi]
PST - ppublish
SO  - Environ Sci Technol. 2006 Mar 1;40(5):1454-61. doi: 10.1021/es052163z.