Vertical fluxes of aromatic and aliphatic hydrocarbons in the Northwestern Mediterranean Sea

Type : ACL
Nature : Production scientifique
Au bénéfice du Laboratoire : Oui
Statut de publication : Publié
Année de publication : 2011
Auteurs (7) : DEYME R BOULOUBASSI I TAPHANEL-VALT Marie-hélène MIQUEL Juan-carlos LORRE A MARTY Jean-claude MEJANELLE Laurence
Revue scientifique : Environmental Pollution
Volume : 159
Fascicule : 12
Pages : 3681-3691
DOI : 10.1016/j.envpol.2011.07.017
URL : <go to isi>://wos:000296397300054
Abstract : Aliphatic and aromatic hydrocarbon fluxes were measured in time series sediment trap samples at 200 m and at 1000 m depths in the open Northwestern Mediterranean Sea, from December 2000 to July 2002. Averaged fluxes of n-alkanes, UCM and T-PAH(35) were 2.96 +/- 2.60 mu g m(-2) d(-1), 64 +/- 60 mu g m(-2) d(-1) and 0.68 +/- 0.59 mu g m(-2) d(-1), respectively. Molecular compositions of both hydrocarbon classes showed a contamination in petrogenic hydrocarbons well above the background level:; of such an open site, whereas pyrolytic hydrocarbons stand in the range of other open Mediterranean locations. Fluxes displayed ample interannual and seasonal variabilities, mainly related to mass flux variation while concentration evolutions trigger secondary changes in pollutant fluxes. High lithogenic flux events exported particles with a larger pollutant load than biogenic particles formed during the spring bloom and during the summer. Sinking hydrocarbons were efficiently transported front 200 m to 1000 m. (C) 2011 Elsevier Ltd. All rights reserved.
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Citation :
Deyme R, Bouloubassi I, Taphanel-Valt M-H, Miquel J-C, Lorre A, Marty J-C, Mejanelle L (2011) Vertical fluxes of aromatic and aliphatic hydrocarbons in the Northwestern Mediterranean Sea. Environ Pollut 159: 3681-3691 | doi: 10.1016/j.envpol.2011.07.017