Record details

Title
    Interactions of EDDS with Fe- and Al-(hydr)oxides
Other titles
    Interakce EDDS s Fe- a Al-(hydr)oxidy
Author
    Balík, Jiří
    Chrastný, Vladislav
    Komárek, Michael
    Száková, Jiřina
    Vaněk, Aleš
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Chemosphere
Vol./nr.
    Roč. 77, č. 1
Pages
    7
Year
    2009
Thesaurus term
    Chelating agent, dissolution, goethite, ferrihydrite, gibbsite, modeling
Keyword
    Al-(hydr)oxides
    EDDS
    Fe-
    Interactions
Abstract (in czech)
   V této práci byla posuzována účinnost fytoextrakce mědi pomocí EDDS. Přítomnost Fe- a Al- hydratovaných oxidů ovlivňuje speciaci EDDS a tím i cílový extrahovaný kov a účinnost extrakce. Informace o množství a krystalickém stavu Fe- a Al- hydratovaných oxidů je klíčová pro posouzení účinosti fytoextrakce.
Abstract (in english)
   This study demonstrated that the presence of Fe- and Al-(hydr)oxides in soils influences the speciation of EDDS and thus can decrease the extraction of the targeted metallic contaminants (e.g., Pb, Cu, Zn). Above all, amorphous and poorly crystalline oxides (e.g., ferrihydrite) seem to significantly control dissolved Fe and Al concentrations in soils in the presence of metal-EDDS complexes and especially uncomplexed EDDS. Metals released from these minerals compete for the chelating agent and the extraction efficiency of the targeted metals is lowered. The formation of stable Cu-EDDS complexes, which are preferentially formed in soils with high Cu concentrations, results into a lower dissolution of ferrihydrite and goethite compared to free EDDS and Al-EDDS. Information about the contents of amorphous and poorly crystalline oxides in the treated soils would thus be beneficial for choosing efficient EDDS dosages.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014