PCBs in the atmosphere of King George Island, Antarctica.
Sci Total Environ
; 308(1-3): 167-73, 2003 Jun 01.
Article
en En
| MEDLINE
| ID: mdl-12738210
ABSTRACT
Polychlorinated biphenyls (PCBs) are ubiquitous anthropogenic compounds found even in the polar regions, mainly due to long-range atmospheric transport. In order to assess the occurrence of atmospheric PCBs in the vicinity of the Brazilian Antarctic Research Station (62 degrees 05'S, 58 degrees 23'W), a sampling survey was undertaken in the austral summer of 1995-1996. The concentrations of the PCB congeners in the air ranged from not detected to 33.2 pgm(-3). The lower chlorinated congeners (PCB-101 and below), which are more volatile and subject to long-range transport, predominated in the air samples and represented 66.7% of the total PCB concentrations. Atmospheric levels of PCBs were correlated with meteorological conditions and the highest levels were associated with the passage of the frontal systems coming from South America.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Sci Total Environ
Año:
2003
Tipo del documento:
Article
País de afiliación:
Brasil