PIERWIASTKI ŚLADOWE W WĘGLU KAMIENNYM LUBELSKIEGO ZAGŁĘBIA WĘGLOWEGO

Abstract

TRACE ELEMENTS IN HARD COALS OF LUBLIN CARBONIFEROUS BASIN

Abstract. Twenty-nine coal samples from the Lublin Formation exploited in the Bogdanka mine (Lublin Coal Basin) were taken for the study. In all samples, the cocentrations of Ag, As, Ba, Cd, Co, Cr, Cs, Cu, Mo, Mn, Ni, Pb, Rb, Sb, Se, Sn, Sr, Th, Tl, U, V and Zn were determined by ICP-MS after full digestion of samples, Hg concentration was determined by AAS with its preconcentration on the amalgamator. Average concentrations of the elements were as follows: Ag – <0.5 mg/kg, As – 47 mg/kg, Ba – 152 mg/kg, Cd – <0.2 mg/kg, Co – 7 mg/kg, Cr – 29 mg/kg, Cs – 1.4 mg/kg, Cu – 32 mg/kg, Hg – 0.105 mg/kg, Mo – 2.9 mg/kg, Mn – 12 mg/kg, Ni – 29 mg/kg, Pb – 14 mg/kg, Rb – 12.8 mg/kg, Sb – 1.5 mg/kg, Se – 4 mg/kg, Sn – 2 mg/kg, Sr – 160 mg/kg, Th – 4,8 mg/kg, TI – 0.4 mg/kg, U – 2.2 mg/kg, V – 56 mg/kg, Zn – 31 mg/kg. Concentration dendrogram of trace elements in coals shows a relationship between (a) Ba and Sr, (b) Co, Se, Mo, Ag, Cd, Tl, Sb, Sn, U, and Cs, (c) Cr, Zn, Mn, Rb, Ni and Cu. The average concentrations of As, Se, Cr, Cu, Ni and V found in the Lublin Formation coals are higher than the averages in coals of the world, of Hg, Tl and Cd are lower, and those of Pb, Sb, Rb, Mn, Zn, Sn, U, and Ba are just close to their worldwide average.