Record details

Title
    Alteration of arsenopyrite in soils under different vegetation covers
Author
    Drahota, Petr
    Ettler, V.
    Mihaljevič, M.
    Procházka, R.
    Strnad, L.
    Šebek, O.
    Šráček, O.
    Zeman, J.
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Science of the Total Environment
Vol./nr.
    Roč. 408, č. 6
Pages
    s. 1286-1294
Year
    2010
Notes
    Rozsah: 9 s. : WWW
    Výzkumný záměr: CEZ:AV0Z30130516
Subject category
    arsenic
    arsenopyrite
    scorodite
    speciation
    weathering
Keyword
    Alteration
    Arsenopyrite
    Covers
    Different
    Soils
    Vegetation
Abstract (in english)
   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.
Contributor
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
    U
Import date
    8. 8. 2012