title: Polycyclic aromatic hydrocarbon transport processes on the scale of a flood event in the rural watershed of Le Bebec, France.
abstract: Transport processes of polycyclic aromatic hydrocarbons (PAHs) were investigated in a rural watershed in France, which led to new quantitative results on the scale of a flood event. For that purpose, principal components analysis (PCA) combined with signal decomposition of PAH Breakthrough curves were used. The results obtained by PCA enabled us to distinguish (i) the transport of low molecular weight PAHs in dissolved form and (ii) the transport of high molecular weight PAHs in particulate form. The intermediate molecular weight PAHs are distributed in these two clusters. The application of a signal decomposition method confirms the results of PCA and makes it possible to quantify the mass PAH resulting, respectively, from resuspension (13.3mg, i.e. 77% of the total mass) and from direct transfer (2.8mg=16% of the total mass). For the resuspension phase, desorption of PAH (38% of the total exported mass) could be also distinguished from sediment resuspension (39%).
authors.affiliation: Laboratoire de Morphodynamique Continentale et Côtière, UMR 6143 CNRS, Université de Rouen, Bât IRESE A, place Emile Blondel, 76821 Mont-Saint-Aignan cedex, France. amer.mouhri@etu.univ-rouen.fr
authors.forename: Amer
authors.initials: A
authors.lastname: Mouhri
authors.forename: Anne
authors.initials: A
authors.lastname: Motelay-Massei
authors.forename: Nicolas
authors.initials: N
authors.lastname: Massei
authors.forename: Matthieu
authors.initials: M
authors.lastname: Fournier
authors.forename: Benoît
authors.initials: B
authors.lastname: Laignel
mesh_terms: D004784:Environmental Monitoring / Q000379:methods; D055868:Floods; D005602:France; D005843:Geography; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D025341:Principal Component Analysis; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical