Sedimentary Records Of Organochlorine Contaminants In Central Chilean Lakes
Author(s)
S. Focardi, R. Barra, K. Pozo, R. Urrutia, 0. Parra, M. Cisternas
& P. Pacheco
Abstract
Sedimentary records of organochlorine
contaminants in Central Chilean Lakes
S. Focardi \ R. Barra^, K. Pozo.\ R.Urrutia ^ O.Parra^ ,
M. Cisternas^ & P. Pacheco *
(I) Department of Environmental Sciences, University of Siena, Siena,
Italy
(2) Aquatic Systems Research Unit, EULA-Chile Environmental Sciences
Centre, Concepcion Chile
Abstract
Aquatic pollution by persistent organic compounds (POCs) in the southern
hemisphere continues to be an important issue. Currently, no historic records of
pollution are available to evaluate the inputs of chlorinated compounds and their
environmental impact. Sedimentary records have been used to define the
historical trend of pollution in lakes located in remote and urban areas. Sediment
cores were collected from several urban and remote lakes in central Chile using a
kayac sediment corer and cut into 1 cm slices. The organochlorine compounds
were isolated in a soxhlet system with n-hexane, and successively identified and
quantified by gas chroma
Keywords
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