title: Effect of nitrate and ammonium fertilization on Zn, Pb, and Cd phytostabilization by Populus euramericana Dorskamp in contaminated technosol.
abstract: This study aimed at assessing the effect of nitrogen addition under two forms, nitrate and ammonium, on the stabilization of Zn, Pb, and Cd by Populus euramericana Dorskamp grown in contaminated soils for 35 days under controlled conditions. Temporal changes in the soil pore water (SPW) were monitored for pH, dissolved organic carbon (DOC), and total dissolved concentrations of metals in the soils rhizosphere. Rhizospheric SPW pH decreased gradually with NH4(+) addition and increased with NO3(-) addition up to one unit, while it slightly decreased initially then increased for the untreated control soil DOC increased with time up to six times, the highest increase occurring with NH4(+) fertilization. An increase in the metal concentrations in the rhizospheric SPW was observed for NH4(+) addition associated with the lowest rhizospheric SPW pH, whereas the opposite was observed for the control soil and NO3(-) fertilization. Fertilization did not affect plant shoots or roots biomass development compared to the untreated control (without N addition). Metals were mostly accumulated in the rhizosphere and N fertilization increased the accumulation for Zn and Pb while Cd accumulation was enhanced for NH4(+) addition. Collectively, our results suggest metal stabilization by P. euramericana Dorskamp rhizosphere with nitrogen fertilization and are potential for phytostabilization of contaminated technosol.
authors.affiliation: Institut des Sciences de la Terre d'Orléans (ISTO), Université d'Orléans, UMR-CNRS 7327 Campus Géosciences, Orléans, France. bhq_chem@yahoo.com.|Applied Sciences Department, University of Technology, Baghdad, Iraq. bhq_chem@yahoo.com.
authors.forename: Bashar
authors.identifier: http://orcid.org/0000-0001-9115-5590
authors.initials: B
authors.lastname: Qasim
authors.affiliation: Institut des Sciences de la Terre d'Orléans (ISTO), Université d'Orléans, UMR-CNRS 7327 Campus Géosciences, Orléans, France.
authors.forename: Mikael
authors.initials: M
authors.lastname: Motelica-Heino
authors.affiliation: LBLGC EA 1207, INRA USC1328, Université d'Orléans, Orléans, France.
authors.forename: Sylvain
authors.initials: S
authors.lastname: Bourgerie
authors.affiliation: Laboratoire de Génie-Civil et géoEnvironnement (LGCgE), Université de Lille1, 59655 Villeneuve d'Ascq Cedex, Lille, France.
authors.forename: Arnaud
authors.initials: A
authors.lastname: Gauthier
authors.affiliation: LBLGC EA 1207, INRA USC1328, Université d'Orléans, Orléans, France.
authors.forename: Domenico
authors.initials: D
authors.lastname: Morabito
mesh_terms: D064751:Ammonium Compounds / Q000633:toxicity*; D001673:Biodegradation, Environmental; D018533:Biomass; D002104:Cadmium / Q000378:metabolism; D005308:Fertilizers / Q000633:toxicity*; D007854:Lead / Q000378:metabolism; D008670:Metals; D009566:Nitrates / Q000633:toxicity*; D009589:Nitrogen Oxides; D010777:Photochemistry; D018520:Plant Shoots / Q000737:chemistry; D032107:Populus / Q000254:growth & development* / Q000378:metabolism; D058441:Rhizosphere; D012989:Soil Pollutants / Q000032:analysis / Q000633:toxicity*; D015032:Zinc / Q000378:metabolism
chemical_list: D064751:Ammonium Compounds; D005308:Fertilizers; D008670:Metals; D009566:Nitrates; D009589:Nitrogen Oxides; D012989:Soil Pollutants; D002104:Cadmium; D007854:Lead; D015032:Zinc
keywords: Nitrogen fertilizers; Phytostabilization; Populus euramericana Dorskamp; Potentially toxic elements; Technosol