Anthropogenic hydrocarbons in sediments of the northeastern Havana seaboard
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Redalyc · Ciencias Marinas
The presence of petrogenic hydrocarbons was evaluated in surface sediments from the northeastern Havana littoral (Cuba). Different geochemical biomarkers were used to differentiate between biogenic and anthropogenic hydrocarbons. Sediment samples were Soxhlet extracted and analyzed by gas chromatogr...
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| Pubblicato in: | Ciencias Marinas |
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| Autore principale: | |
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad Autónoma de Baja California
2011
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| Riassunto: | The presence of petrogenic hydrocarbons was evaluated in surface sediments from the northeastern Havana littoral (Cuba). Different geochemical biomarkers were used to differentiate between biogenic and anthropogenic hydrocarbons. Sediment samples were Soxhlet extracted and analyzed by gas chromatography with flame ionization and mass spectrometer detectors. Total concentrations of aliphatic hydrocarbons ranged from 5.5 ± 0.3 to 225.7 ± 12.6 µg g–1. The presence of an unresolved complex mixture, and the detection of hopanes and of the isoprenoid compounds pristane and phytane revealed the occurrence of petroleum-derived hydrocarbons in the sediment samples.
En el presente trabajo se evaluó la presencia de hidrocarburos antropogénicos en sedimentos superficiales del litoral nordeste de La Habana. Se usaron diferentes biomarcadores geoquímicos con el objetivo de diferenciar entre hidrocarburos biogénicos y antropogénicos. Las muestras de sedimento fueron extraídas mediante Soxhlet y, posteriormente, analizadas utilizando la cromatografía gaseosa con detectores de ionización a la llama y espectrometría de masas. Las concentraciones totales de hidrocarburos alifáticos variaron de 5.5 ± 0.3 a 225.7 ± 12.6 µg g–1. La presencia de una mezcla compleja no resuelta y la detección de hopanos y de los compuestos isoprenoides pristano y fitano revelaron la existencia de hidrocarburos de origen petrogénico en las muestras de sedimentos. |
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