title: Combining measurements and modelling to quantify the contribution of atmospheric fallout, local industry and road traffic to PAH stocks in contrasting catchments.
abstract: Various sources supply PAHs that accumulate in soils. The methodology we developed provided an evaluation of the contribution of local sources (road traffic, local industries) versus remote sources (long range atmospheric transport, fallout and gaseous exchanges) to PAH stocks in two contrasting subcatchments (46-614 km²) of the Seine River basin (France). Soil samples (n = 336) were analysed to investigate the spatial pattern of soil contamination across the catchments and an original combination with radionuclide measurements provided new insights into the evolution of the contamination with depth. Relationships between PAH concentrations and the distance to the potential sources were modelled. Despite both subcatchments are mainly rural, roadside areas appeared to concentrate 20% of the contamination inside the catchment while a local industry was found to be responsible for up to 30% of the stocks. Those results have important implications for understanding and controlling PAH contamination in rural areas of early-industrialized regions.
authors.affiliation: Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Unité Mixte de Recherche 8212 (CEA-CNRS-UVSQ/IPSL), Gif-sur-Yvette, France; Sorbonne Universités, UPMC Univ Paris 06, UMR 7619, METIS, F-75005 Paris, France; CNRS, UMR 7619, METIS, F-75005 Paris, France; EPHE, UMR 7619, METIS, F-75005 Paris, France. Electronic address: david.gateuille@lsce.ipsl.fr.
authors.forename: David
authors.initials: D
authors.lastname: Gateuille
authors.affiliation: Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Unité Mixte de Recherche 8212 (CEA-CNRS-UVSQ/IPSL), Gif-sur-Yvette, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Evrard
authors.affiliation: Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Unité Mixte de Recherche 8212 (CEA-CNRS-UVSQ/IPSL), Gif-sur-Yvette, France.
authors.forename: Irène
authors.initials: I
authors.lastname: Lefevre
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7619, METIS, F-75005 Paris, France; CNRS, UMR 7619, METIS, F-75005 Paris, France; EPHE, UMR 7619, METIS, F-75005 Paris, France.
authors.forename: Elodie
authors.initials: E
authors.lastname: Moreau-Guigon
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7619, METIS, F-75005 Paris, France; CNRS, UMR 7619, METIS, F-75005 Paris, France; EPHE, UMR 7619, METIS, F-75005 Paris, France.
authors.forename: Fabrice
authors.initials: F
authors.lastname: Alliot
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7619, METIS, F-75005 Paris, France.
authors.forename: Marc
authors.initials: M
authors.lastname: Chevreuil
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7619, METIS, F-75005 Paris, France; CNRS, UMR 7619, METIS, F-75005 Paris, France; EPHE, UMR 7619, METIS, F-75005 Paris, France.
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Mouchel
mesh_terms: D001272:Atmosphere / Q000737:chemistry; D004784:Environmental Monitoring / Q000379:methods*; D004787:Environmental Pollution / Q000706:statistics & numerical data; D005602:France; D007221:Industry; D008956:Models, Chemical; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D045483:Rivers / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014186:Transportation
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants
keywords: Model; PAHs; Soil; Source contribution; Spatial variation