Distribution and speciation of trace elements in iron and manganese oxide cave deposits

Microchemical characterization of biogeochemical samples collected from the Buda Thermal Karst System, Hungary

“…This last method offers the following advantageous properties: simple way of quantification applying internal standardization, low sample demand (few μg or μl) and absolute detection limits in the pg-ng range. It should be noted that the synchrotron-based X-ray techniques make possible to study the distribution of certain elements [19] as well as their oxidation state and chemical environment [20].…”

Predicting heavy metals' adsorption edges and adsorption isotherms on MnO2 with the parameters determined from Langmuir kinetics

“…Moreover, Wang et al (2004) (Frierdich and Catalano, 2012). Moreover, manganese dioxide 160 (MnO 2 ) exhibits higher affinity and larger adsorption capacity for 161 heavy metals than other metal oxides such as Al 2 O 3 , Fe 2 O 3 , Fe 3 O 4 , 162 and TiO 2 (Tamura et al, 1996.…”

Inorganic constituents of conductivity in five central Appalachian watersheds with mixed source-driven pollutants

“…In cases where mining activity is a driver in altered stream chemistry, the inorganic constituents can vary, and are often driven by the local geological formations found in concert with coal seams. General carbonate formations and coal seams can contain metals such as Ni, Cu, Zn, As and Se (Frierdich et al, 2011;Hartland et al, 2011Hartland et al, , 2012Frierdich and Catalano, 2012;Brown et al, 2014), but relative concentrations can vary greatly by location. The presence of chemicals of particular ecological and human concern, such as As and Se, is also geology-dependent as their occurrence with pyrites and other minerals associated with coal seams varies throughout the region (Diehl et al, 2012).…”