Podrobnosti záznamu

Název
    Total dynamics of quartz-water system at ambient conditions
Autor
    Faimon, Jiří
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Aquatic Geochemistry
Svazek/č.
    Roč. 2005, č. 11
Strany
    33
Rok
    2005
Výraz tezauru
    complex
    dissolution
    dynamics
    flux
    growth
    modeling
    PHREEQC
    quartz
    surface
Klíčové slovo
    Ambient
    Conditions
    Dynamics
    Quartz-water
    System
    Total
Abstrakt (anglicky)
   New data on the dissolution and growth of quartz in acid, nearly neutral and slightly alkaline solutions at ambient conditions are presented. During batch dissolutions, aqueous Si-concentrations increased nonlinearly towards limit values. During parallel growth experiments, however, the high Si-concentrations corresponding to 13-fold supersaturation with respect to quartz did not decreased. To interpret these results, two dynamic models (1) a reaction model and (2) a surface-complexation model, were derived. Both models were focused on (a) reversible dissolution/growth of bulk quartz and b) irreversible dissolution of disturbed quartz (weakly bounded Si-atoms) on new surface.
Přispěvatel
    MU Brno, Přírodovědecká fakulta
Kód přispěvatele
    MU, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012