Potentially hazardous trace elements in coal from the Kostolac coal basin

Abstract

The content of potentially toxic trace elements (As, Be, Cd, Co, Cr, Cu, Hg Mn, Ni, Pb, Sb, Se, Th i U) was studied on thirteen core coal samples from the II and III coal seams of the Drmno coal field, collected from the drillhole P-17/2002. Analyses were performed by ICPMS method in laboratory of Bundesanstalt für Geowissenschaften und Rohstoffe (BGR) in Hannover (Germany). According to geometric mean values, lignite coal from the Kostolac basin has relatively high content of manganese (172,45 mg/kg), nickel (53,94 mg/kg), chromium (28,42 mg/kg), arsenic (25,15 mg/kg), copper (19,09 mg/kg) and cobalt (8,60 mg/kg), which are much higher than average world coals of the same rank. Content of other trace is similar to world coal average. Uranium and thorium content is lower than the world average, but in some parts of the coal seam U content is rather high.

Sadržaj potencijalno toksičnih mikroelemenata (As, Be, Cd, Co, Cr, Cu, Hg Mn, Ni, Pb, Sb, Se, Th i U) proučen je na trinaest uzoraka uglja iz II i III ugljenog sloja polja Drmno, prikupljenih iz bušotine P-17/2002. Analize su izvršene metodom masene spektrometrije indukovane kuplovane plazme (ICP-MS) u laboratoriji Saveznog geološkog Zavoda (Bundesanstalt für Geowissenschaften und Rohstoffe-BGR) u Hanoveru (Nemačka). Analizom geometrijske srednje vrednosti pokazalo se da ugalj Kostolačkog basena sadrži relativno visoke koncentracije mangana (172,45 mg/kg), nikla (53,94 mg/kg), hroma (28,42 mg/kg), arsena (25,15 mg/kg), bakra (19,09 mg/kg) i kobalta (8,60 mg/kg) koje su znatno iznad prosečnih vrednosti za svetske ugljeve istog ranga. Sadržaj ostalih ispitivanih elemenata je blizak prosečnim svetskim vrednostima. Sadržaj urana i torijuma je niži u odnosu na prosečne svetske vrednosti, mada postoje delovi slojeva uglja sa visokim sadržajem urana.