Mercury is a major and ubiquitous metallic contaminant of the environment. Mercury emission into the atmosphere from anthropogenic sources is ongoing and major contributors are fossil fuel combustion, non-ferrous metallurgy and a continuous use of Hg (Qiu et al., 2012 and UNEP, 2013). Geochemical anomalies causing mercuriferous belts with naturally Hg-enriched soils also are sources of mercury emission into the atmosphere. The anthropogenic and natural emissions and further atmospheric deposition of mercury in recent decades is considered a major cause of Hg enrichment in litter fall, decaying litter and the upper – organic layer of forest soils with potential negative impacts on ecosystems but natural factors also contribute (Demers et al., 2007 and Falandysz et al., 2014).