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Título

Organochlorine compounds in soils and sediments of the mountain Andean Lakes

AutorBorghini, Francesca; Grimalt, Joan O.; Sánchez-Hernández, Juan C.; Barra, Ricardo; Torres García, Carlos J.; Focardi, Silvano
Palabras claveOrganochlorine compounds
Andean range
Long range transport
Soil
Lake sediments
Fecha de publicación13-mar-2005
EditorElsevier
CitaciónEnvironmental Pollution 136(2): 253-266 (2005)
ResumenSemi-volatile organochlorine compounds (OC) were analyzed in remote Andean soils and lake sediments. The sampling sites covered a wide latitudinal gradient from 18°S to 46°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, α- and γ-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.
Distribution of persistent organochlorine compounds in the Andean Mountain lakes is influenced by temperature.
Descripción14 pages, 6 figures.-- PMID: 15840533 [PubMed].-- Printed version published Jul 2005.
Versión del editorhttp://dx.doi.org/10.1016/j.envpol.2005.01.007
URIhttp://hdl.handle.net/10261/15289
DOI10.1016/j.envpol.2005.01.007
ISSN0269-7491 (Print)
1873-6424 (Online)
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