Podrobnosti záznamu

Název
    Alteration of arsenopyrite in soils under different vegetation covers
Autor
    Drahota, Petr
    Ettler, V.
    Mihaljevič, M.
    Procházka, R.
    Strnad, L.
    Šebek, O.
    Šráček, O.
    Zeman, J.
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Science of the Total Environment
Svazek/č.
    Roč. 408, č. 6
Strany
    s. 1286-1294
Rok
    2010
Poznámky
    Rozsah: 9 s. : WWW
    Výzkumný záměr: CEZ:AV0Z30130516
Předmětová kategorie
    arsenic
    arsenopyrite
    scorodite
    speciation
    weathering
Klíčové slovo
    Alteration
    Arsenopyrite
    Covers
    Different
    Soils
    Vegetation
Abstrakt (anglicky)
   The weathering of arsenopyrite has been monitored in soils using an in situ experimental approach. Arsenopyrite in nylon experimental bags was placed in individual horizons in soils in spruce, beech and unforested areas and left in contact with the soil for a period of 1 year. Scorodite was identified as a principal secondary mineral of arsenic (As) formed directly on the surface of the arsenopyrite. The amount of scorodite formed decreased in the series beech, spruce and unforested areas. In forested areas, there was a larger amount of scorodite on arsenopyrites exposed in organic horizons (litter, A horizon). The greater rate of arsenopyrite alteration in organic horizons in the beech stand compared to spruce stand is probably a result of faster mineralization of organic material with resulting production of nitrate and better seepage conditions of soil in this area. The As content in the mobile fractions increased in the organic horizon in the forested areas after the experiments.
Přispěvatel
    AV ČR Brno, Geologický ústav
Kód přispěvatele
    AV ČR, GLÚ
Zdrojový formát
    U
Datum importu
    8. 8. 2012