VARIABILITY OF TRACE ELEMENTS IN THE BROWN COAL DEPOSITS OF POLAND
Journal Title: Biuletyn Państwowego Instytutu Geologicznego - Year 2012, Vol 448, Issue 448
Abstract
A total of 104 samples of Neogene brown coals collected from the Turów, Bełchatów, Adamów, Lubstów, Pątnów and Koźmin deposits were tested for contents of Ag, As, Cd, Co, Cr, Cs, Cu, Mn, Mo, Ni, Pb, Sb, Se, Sn, Sr, Th, Tl, U, V and Zn by ICP-MS technique. The Hg content was measured by AAS method with pre-concentration on a gold amalgamate trap. The average contents of Ag, Cd, Hg, Sb and Tl were lower than 1 mg/kg, the mean contents of As, Co, Cs, Mo, Se, did not exceed 10.0 mg/kg, while mean content of Cr, Cu, Ni, Pb, Rb, V and Zn were in range from several to tens of mg/kg. Mn, Sr and Ba were present at even higher concentrations. The studies have shown that the Turów coal deposits are characterized by relatively high contents of As, Ba, Cr, Rb, V, Zn, Co, Cs, Mo, Se, Sn, Th, Tl and U the Bełchatów coals show higher contents of Cd and Hg, while the Konin coals show an increased Mn content. Furthermore, the coals from the Bełchatów and Konin deposits are characterized by a higher content of Sr in relation to the Turów coals. In comparison to the average content of trace elements in brown coals of the world, the coals from the Turów deposits are enriched three or more times with Ba, Cr, Co, Cu, Ni, Pb, Rb, Sn, Th, V, U and Zn. The coals from the Bełchatów basin contain two or more times more Cd, Co, Cr, Mn, Ni, Se and V, and the coals from the Konin deposits contain two or more times more Mn and Sr.
Authors and Affiliations
Izabela BOJAKOWSKA, Dariusz LECH
Keywords
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