title: Occurrence and distribution of hydrocarbons in the surface microlayer and subsurface water from the urban coastal marine area off Marseilles, Northwestern Mediterranean Sea.
abstract: Aliphatic (AHs) and polycyclic aromatic hydrocarbons (PAHs) were analyzed in dissolved and particulate material from surface microlayer (SML) and subsurface water (SSW) sampled at nearshore observation stations, sewage effluents and harbour sites from Marseilles coastal area (Northwestern Mediterranean) in 2009 and 2010. Dissolved and particulate AH concentrations ranged 0.05-0.41 and 0.04-4.3 μg l(-1) in the SSW, peaking up to 38 and 1366 μg l(-1) in the SML, respectively. Dissolved and particulate PAHs ranged 1.9-98 and 1.9-21 ng l(-1) in the SSW, amounting up 217 and 1597 ng l(-1) in the SML, respectively. In harbours, hydrocarbons were concentrated in the SML, with enrichment factors reaching 1138 for particulate AHs. Besides episodic dominance of biogenic and pyrogenic inputs, a moderate anthropisation from petrogenic sources dominated suggesting the impact of shipping traffic and surface runoffs on this urbanised area. Rainfalls increased hydrocarbon concentrations by a factor 1.9-11.5 in the dissolved phase.
authors: Aix-Marseille Univ., LMGEM, UMR 6117, 13007 Marseille, France CNRS, LMGEM, UMR 6117, 13009 Marseille, France. catherine.guigue@univmed.fr
authors: Catherine
authors: C
authors: Guigue
authors: Marc
authors: M
authors: Tedetti
authors: Sébastien
authors: S
authors: Giorgi
authors: Madeleine
authors: M
authors: Goutx
mesh_terms: D004784:Environmental Monitoring; D005410:Flame Ionization; D005602:France; D008401:Gas Chromatography-Mass Spectrometry; D019015:Geologic Sediments / Q000737:chemistry*; D006838:Hydrocarbons / Q000032:analysis* / Q000737:chemistry; D008522:Mediterranean Sea; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000737:chemistry; D011891:Rain; D012623:Seawater / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D006838:Hydrocarbons; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical