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DOI | 10.1017/S0954102011000563 | ||||
Año | 2011 | ||||
Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Alkanes and polycyclic aromatic hydrocarbons were quantified in samples of coastal sediments along Fildes Peninsula, King George Island, South Shetland Islands, Antarctica, during the summers of 2005 and 2007. Quantification was done by using GC-MS and applying the EPA 3550B method. Individual polycyclic aromatic hydrocarbon (PAHs) concentrations were below 14.4 ng g(-1) dry wt in 2005 and below 88.7 ng g(-1) dry wt in 2007. Alkanes concentrations were higher than those of PAHs and ranged from 8 to 2236 ng g(-1) dry wt in 2005 and from 53 to 745 ng g(-1) dry wt in 2007. Results of total PAHs and alkanes were integrated along with base administrative and geographic maps in a GIS environment to determine the geographic extent of hydrocarbons detected. The largest concentrations were found in areas near research stations where total n-alkanes suggest petrogenic sources and where some diagnostic ratios suggest the presence of some PAHs produced by pyrogenic processes. Even if concentrations of hydrocarbons are low, they seem to be a result of increases in scientific activities, in the activities of the stable population, in the number of tourists, or a combination of theses factors.
Ord. | Autor | Género | Institución - País |
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1 | Prendez, Margarita | Mujer |
Universidad de Chile - Chile
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2 | Barra, Carolina | Mujer |
Universidad de Chile - Chile
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3 | Toledo-Neira, Carla | Mujer |
Universidad de Chile - Chile
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4 | Richter, P | Hombre |
Universidad de Chile - Chile
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Agradecimiento |
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This research was supported by the Chilean Antarctic Institute, Projects 04/03 and T 02_07. The authors thank the anonymous reviewers for their valuable comments and suggestions as well as Dr B. Didyk's useful intellectual discussion, all which certainly improve this work. |