Mercury contamination from historical mining territory at Malachov Hg-deposit (Central Slovakia)
2016
Dadová, Jana | Andras, Peter | Kupka, Jiří | Krnáč, Jozef | Andráš, Peter, Jr | Hroncová, Emília | Midula, Pavol
Environmental contamination caused by mercury is a serious problem worldwide. The study was conducted in order to identify Hg contamination in soil, technosoil from dumps, groundwater, and surface water in the surroundings of the abandoned Hg deposit of Malachov in Central Slovakia. Soil from the Malachovský brook valley was classified as cambi-soil (rendzina). The highest Hg concentrations (44.24 mg kg⁻¹) were described in the soil from the mining area at the Veľká Studňa locality. In the groundwater, the maximal Hg content is 0.84 μg L⁻¹, and in the surface water it is 394 μg L⁻¹. The speciation study proved that in most samples, Hg occurs in the form of cinnabarite. The release of Hg into the environment as a consequence of weathering is limited.
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