title: Aided phytoextraction of Cu, Pb, Zn, and As in copper-contaminated soils with tobacco and sunflower in crop rotation: Mobility and phytoavailability assessment.
abstract: Copper-contaminated soils were managed with aided phytoextraction in 31 field plots at a former wood preservation site, using a single incorporation of compost (OM) and dolomitic limestone (DL) followed by a crop rotation with tobacco and sunflower. Six amended plots, with increasing total soil Cu, and one unamended plot were selected together with a control uncontaminated plot. The mobility and phytoavailability of Cu, Zn, Cr and As were investigated after 2 and 3 years in soil samples collected in these eight plots. Total Cu, Zn, Cr and As concentrations were determined in the soil pore water (SPW) and available soil Cu and Zn fractions by DGT. The Cu, Zn, Cr and As phytoavailability was characterized by growing dwarf beans on potted soils and determining the biomass of their plant parts and their foliar ionome. Total Cu concentrations in the SPW increased with total soil Cu. Total Cu, Zn, Cr and As concentrations in the SPW decreased in year 3 as compared to year 2, likely due to annual shoot removals by the plants and the lixiviation. Available soil Cu and Zn fractions also declined in year 3. The Cu, Zn, Cr and As phytoavailability, assessed by their concentration and mineral mass in the primary leaves of beans, was reduced in year 3.
authors.affiliation: ISTO, UMR 7327 - CNRS/Université d'Orléans, Campus Géosciences, 1A, rue de la Férollerie, Orléans 45071 CEDEX 2, France; Université d'Orléans, UFR-Faculté des Sciences, Laboratoire de Biologie des Ligneux et des Grandes Cultures, UPRES EA 1207, Rue de Chartres, BP 6759, Orléans F-45067 CEDEX 02, France. Electronic address: nour.hattab@univ-orleans.fr.
authors.forename: Nour
authors.initials: N
authors.lastname: Hattab-Hambli
authors.affiliation: ISTO, UMR 7327 - CNRS/Université d'Orléans, Campus Géosciences, 1A, rue de la Férollerie, Orléans 45071 CEDEX 2, France.
authors.forename: Mikael
authors.initials: M
authors.lastname: Motelica-Heino
authors.affiliation: Université de Bordeaux, UMR 1202 BIOGECO, Bat B2, allée G. St Hilaire, CS50023, Pessac 33615, France; INRA, UMR 1202 BIOGECO, 69 Route d'Arcachon, Cestas 33613 CEDEX, France. Electronic address: mench@bordeaux.inra.
authors.forename: Michel
authors.initials: M
authors.lastname: Mench
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D003300:Copper / Q000032:analysis / Q000378:metabolism*; D005602:France; D006368:Helianthus / Q000254:growth & development* / Q000378:metabolism; D007854:Lead / Q000032:analysis / Q000378:metabolism*; D018520:Plant Shoots / Q000254:growth & development / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*; D014026:Nicotiana / Q000254:growth & development* / Q000378:metabolism; D015032:Zinc / Q000032:analysis / Q000378:metabolism*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D007854:Lead; D003300:Copper; D015032:Zinc
keywords: Phytoavailability; Phytoextraction; Potentially toxic trace elements; Soil pore water; Sunflower; Tobacco