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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
The comparison of geochemical characteristics of Fe, Co, Ni
 Kubínová, Petra ; Skřivan, Petr ; Navrátil, Tomáš ; Rohovec, Jan
The purpose of this paper is to compare the geochemical characteristics of iron, manganese, nickel and cobalt. In addition, the evaluation of the main fluxes of the selected elements in the model catchment is made.
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Mercury content and speciation in contaminated soils
 Hojdová, Maria ; Rohovec, Jan ; Navrátil, Tomáš
The study deals with the determination of Hg distribution and speciation in soils with different level of contamination in the CR. The highest concentrations of Hg were found in topsoil horizons and declined with increasing depth and decreasing content of humus. Thermodesorption analysis distinguished Hg2+ weakly bound to clay minerals from Hg bound to organic matter or sulfides.
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Distribution of the rare earth elements in the small catchment Lesní potok
 Špičková, Jitka ; Navrátil, Tomáš ; Skřivan, Petr ; Rohovec, Jan ; Mihajlevič, M.
Lanthanides (REE) are particularly useful as tracers of natural processes such as crust and mantle processes, weathering, sedimentary processes, geochemical processes in surface and groundwaters and transport of particulate material through the atmosphere. The aim of this study was to contribute to explanation of the REE cycling by evaluating their concentration in particular components of the ecosystem and by comparing their distributions between these components.
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