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Evaluation of cyclonic ash, commercial Na-silicates, lime and phosphoric acid for metal immobilisation purposes in contaminated soils in Flanders (Belgium)
2006
Geebelen, Wouter | Sappin-Didier, Valerie, V. | Ruttens, Ann | Carleer, Robert | Yperman, Jan | Bongue-Boma, Kwélé | Mench, Michel | van Der Lelie, Niels | Vangronsveld, Jaco | Hasselt University (UHasselt) | Transfert Sol-Plante et Cycle des Eléments Minéraux dans les Ecosystèmes Cultivés (TCEM) ; Institut National de la Recherche Agronomique (INRA)-École Nationale d'Ingénieurs des Travaux Agricoles - Bordeaux (ENITAB) | Biodiversité, Gènes et Ecosystèmes (BioGeCo) ; Institut National de la Recherche Agronomique (INRA)-Université Sciences et Technologies - Bordeaux 1 (UB) | Brookhaven National Laboratory [Upton, NY] (BNL) ; UT-Battelle, LLC-Stony Brook University [SUNY] (SBU) ; State University of New York (SUNY)-State University of New York (SUNY)-U.S. Department of Energy [Washington] (DOE)
International audience | In order to reduce the health risks associated with historically enriched metal smelting sites in Flanders (Belgium), the capacities of a non-beringite cyclonic ash and commercial Na-silicates to fix metals and create conditions to restore vegetation cover were evaluated and compared to lime and H3PO4. All tested amendments reduced Ca(NO3)2-extractable soil metal concentrations and reduced metal uptake in Agrostis capillaris seedlings. Sodium released by Na-silicates was possibly toxic to bean plants while an isotopic dilution technique revealed that metals were only weakly sorbed by silicates (i.e. reversible sorption). Cyclonic ash appeared more efficient than lime in both reducing oxidative stress in beans and Zn, Cu and Pb uptake in grasses. The metal fixing mechanism for both amendments appeared similar (i.e. irreversible fixation at constant pH), in contrast to H3PO4 where at least part of the immobilised Cd was irreversibly fixed across a range of pH
Afficher plus [+] Moins [-]Morphological and functional responses of a metal-tolerant sunflower mutant line to a copper-contaminated soil series
2018
Kolbas, Aliaksandr | Kolbas, Natallia | Marchand, Lilian | Herzig, Rolf | Mench, Michel | Biodiversité, Gènes & Communautés (BioGeCo) ; Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB) | State University | Phytotech Foundation ; Partenaires INRAE | ANR-15-SUSF-0007,INTENSE,Intensify production, transform biomass to energy and novel goods and protect soils in Europe(2015)
International audience | The potential use of a metal-tolerant sunflower mutant line for biomonitoring Cu phytoavailability, Cu-induced soil phytotoxicity, and Cu phytoextraction was assessed on a Cu-contaminated soil series (13–1020 mg Cu kg−1) obtained by fading a sandy topsoil from a wood preservation site with a similar uncontaminated soil. Morphological and functional plant responses as well as shoot, leaf, and root ionomes were measured after a 1-month pot experiment. Hypocotyl length, shoot and root dry weight (DW) yields, and leaf area gradually decreased as soil Cu exposure rose. Their dose-response curves (DRC) plotted against indicators of Cu exposure were generally well fitted by sigmoidal curves. The half-maximal effective concentration (EC50) of morphological parameters ranged between 203 and 333 mg Cu kg−1 soil, corresponding to 290–430 μg Cu L−1 in the soil pore water, and 20 ± 5 mg Cu kg−1 DW in the shoots. The EC10 for shoot Cu concentration (13–15 mg Cu kg−1 DW) coincided to 166 mg Cu kg−1 soil. Total chlorophyll content and total antioxidant capacity (TAC) were early biomarkers (EC10: 23 and 51 mg Cu kg−1 soil). Their DRC displayed a biphasic response. Photosynthetic pigment contents, e.g., carotenoids, correlated with TAC. Ionome was changed in Cu-stressed roots, shoots, and leaves. Shoot Cu removal peaked roughly at 280 μg Cu L−1 in the soil pore water.
Afficher plus [+] Moins [-]Reducing power dependent on metabolic changes as an indicator for ozone effective phytotoxicity
2008
Dizengremel, Pierre, | Jolivet, Yves, | Le Thiec, Didier, | Hasenfratz-Sauder, Marie-Paule | Bagard, Mathieu
Ozone (tropospheric and stratospheric) and the health state of forest trees. The INRA (Institut National de la Recherche Agronomique) - Nancy search works (France)
1994
Garrec, J.P. (Institut National de la Recherche Agronomique, Champenoux (France). Centre de Nancy, Ecophysiologie Forestiere)