title: Impact of fresh organic matter incorporation on PAH fate in a contaminated industrial soil.
abstract: The impacts of fresh organic matter (OM) incorporation in an industrial PAH-contaminated soil on its structure and contaminant concentrations (available and total) were monitored. A control soil and a soil amended with the equivalent of 10 years maize residue input were incubated in laboratory-controlled conditions over 15 months. The structure of the amended soil showed an aggregation process trend which is attributable to (i) the enhanced microbial activity resulting from fresh OM input itself and (ii) the fresh OM and its degradation products. Initially the added organic matter was evenly distributed among all granulodensimetric fractions, and then rapidly degraded in the sand fraction, while stabilizing and accumulating in the silts. PAH degradation remained slight, despite the enhanced microbial biomass activity, which was similar to kinetics of the turnover rate of OM in an uncontaminated soil. The silts stabilized the anthropogenic OM and associated PAH. The addition of fresh OM tended to contribute to this stabilization process. Thus, in a context of plant growth on this soil two opposing processes might occur: rhizodegradation of the available contaminant and enhanced stabilization of the less available fraction due to carbon input.
authors.affiliation: Université de Lorraine, LSE, UMR 1120, Vandœuvre-lès-Nancy, F-54518, France; INRA, LSE, UMR 1120, Vandœuvre-lès-Nancy, F-54518, France; Université de Lorraine, LIEC, UMR 7360, Vandœuvre-lès-Nancy, F-54506, France; CNRS, LIEC, UMR 7360, Vandœuvre-lès-Nancy, F-54506, France.
authors.forename: Audrey
authors.initials: A
authors.lastname: Pernot
authors.affiliation: Université de Lorraine, LSE, UMR 1120, Vandœuvre-lès-Nancy, F-54518, France; INRA, LSE, UMR 1120, Vandœuvre-lès-Nancy, F-54518, France. Electronic address: stephanie.ouvrard@univ-lorraine.fr.
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Ouvrard
authors.affiliation: Université de Lorraine, LSE, UMR 1120, Vandœuvre-lès-Nancy, F-54518, France; INRA, LSE, UMR 1120, Vandœuvre-lès-Nancy, F-54518, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Leglize
authors.affiliation: Université de Lorraine, LSE, UMR 1120, Vandœuvre-lès-Nancy, F-54518, France; INRA, LSE, UMR 1120, Vandœuvre-lès-Nancy, F-54518, France; CNRS, UMS 3562, Vandœuvre-lès-Nancy, F-54501, France.
authors.forename: Françoise
authors.initials: F
authors.lastname: Watteau
authors.affiliation: INRA, BEF, UR 1138, Centre Nancy-Lorraine, Champenoux, F-54280, France.
authors.forename: Delphine
authors.initials: D
authors.lastname: Derrien
authors.affiliation: CNRS, UMS 3562, Vandœuvre-lès-Nancy, F-54501, France; Université de Lorraine, Géoressources, UMR 7359, Vandœuvre-lès-Nancy, F-54506, France; CNRS, Géoressources, UMR 7359, Vandœuvre-lès-Nancy, F-54506, France.
authors.forename: Catherine
authors.initials: C
authors.lastname: Lorgeoux
authors.affiliation: Université de Lorraine, LIEC, UMR 7360, Vandœuvre-lès-Nancy, F-54506, France; CNRS, LIEC, UMR 7360, Vandœuvre-lès-Nancy, F-54506, France.
authors.forename: Laurence
authors.initials: L
authors.lastname: Mansuy-Huault
authors.affiliation: Université de Lorraine, LIEC, UMR 7360, Vandœuvre-lès-Nancy, F-54506, France; CNRS, LIEC, UMR 7360, Vandœuvre-lès-Nancy, F-54506, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Faure
mesh_terms: D007221:Industry; D008956:Models, Chemical; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000737:chemistry*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants
keywords: (13)C natural abundance; Anthropic OM; Maize addition; PAH availability; Soil structure