In situ anaerobic degradation of petroleum alkanes in marine sediments: preliminary results |
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Authors: | Delphine Massias Vincent Grossi Jean-Claude Bertrand |
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Institution: | 1. Laboratoire d''océanographie et de biogéochimie, UMR CNRS 6535, station marine d''Endoume, rue Batterie-des-Lions, 13007 Marseille, France;2. Laboratoire d''océanographie et de biogéochimie, UMR CNRS 6535, faculté des sciences de Luminy, case 901, 13288 Marseille cedex 9, France |
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Abstract: | The degradation of acyclic petroleum hydrocarbons was studied during a 24-month experiment in Mediterranean coastal sediments (Gulf of Fos). Sediment cores entirely contaminated with oil (Arabian Light Crude Oil) were incubated in situ. The use of conservative tracers of sediment's particles reworking (luminophores) allowed the distinction of the reworked layer from the anoxic deeper sediments. Using the 17α,21βC30 hopane (C30H) as an inert internal reference, we could demonstrate that, after 24 months of experiment, acyclic petroleum hydrocarbons can be degraded under natural anaerobic conditions. The reactivity of individual alkanes appeared to depend on their chemical structure. To cite this article: D. Massias et al., C. R. Geoscience 335 (2003).To cite this article: D. Massias et al., C. R. Geoscience 335 (2003). |
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Keywords: | petroleum hydrocarbons anaerobic degradation in situ experiments recent sediment bioturbation Mediterranean Sea hydrocarbures pétroliers dégradation anaérobie expériences in situ sédiment récent bioturbation mer Méditerranée |
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