| Title: | Organochlorine compounds in soils and sediments of the mountain Andean Lakes |
| Author(s): | Borghini F; Grimalt JO; Sanchez-Hernandez JC; Barra R; Garcia CJ; Focardi S; |
| Address: | "Department of Environmental Sciences, University of Siena, Via Mattioli 4, 53100 Siena, Italy" |
| DOI: | 10.1016/j.envpol.2005.01.007 |
| ISSN/ISBN: | 0269-7491 (Print) 0269-7491 (Linking) |
| Abstract: | "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" |
| Keywords: | "Altitude Chile Environmental Monitoring/*methods Fresh Water Geologic Sediments/*analysis Hydrocarbons, Chlorinated/*analysis Soil Pollutants/*analysis Temperature;" |
| Notes: | "MedlineBorghini, Francesca Grimalt, Joan O Sanchez-Hernandez, Juan C Barra, Ricardo Garcia, Carlos J Torres Focardi, Silvano eng Research Support, Non-U.S. Gov't England 2005/04/21 Environ Pollut. 2005 Jul; 136(2):253-66. doi: 10.1016/j.envpol.2005.01.007" |
