Organochlorine compounds in soils and sediments of the mountain Andean Lakes.
Environ Pollut
; 136(2): 253-66, 2005 Jul.
Article
em En
| MEDLINE
| ID: mdl-15840533
Semi-volatile organochlorine compounds (OC) were analyzed in remote Andean soils and lake sediments. The sampling sites covered a wide latitudinal gradient from 18 degrees S to 46 degrees S along Chile and an altitudinal gradient (10-4500 m). The concentrations were in the order of background levels, involving absence of major pollution sources in the high mountain areas. Significant correlations were found between log-transformed concentrations of hexachlorobenzene, alpha- and gamma-hexachlorocyclohexane in soils and total organic content (TOC). In addition, TOC-normalized concentrations of the most volatile OC showed a significant linear dependence with air temperature. This good agreement points to temperature as a significant factor for the retention of long range transported OC in remote ecosystems such as the Andean mountains, although other variables should not be totally excluded. The highest concentrations of OCs were achieved in the sites located at highest altitude and lowest temperature of the dataset.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes do Solo
/
Monitoramento Ambiental
/
Sedimentos Geológicos
/
Hidrocarbonetos Clorados
País/Região como assunto:
America do sul
/
Chile
Idioma:
En
Revista:
Environ Pollut
Assunto da revista:
SAUDE AMBIENTAL
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Itália
País de publicação:
Reino Unido