Possibilities of pollution of ground waters in Kostolac (Serbia, [Yugoslavia]) by trace elements originating from lignite ash
1999
Popovic, A. (Univerzitet u Beogradu, Beograd (Yugoslavia). Hemijski fakultet) | Djordjevic, D. | Polic, P.
Examination of the most mobile fractions of microelements (soluble in distilled water and in 1 M acetate buffer, pH 5.50) from coal ash obtained in "Kostolac B" power plant (Serbia, Yugoslavia) reveals that the expected concentrations of the majority of elements examined (Cd, Cu, Pb, Zn, Cr) in the water leaving the pit satisfy most of water quality standards. The extractibility of Ni and especially As, is much larger and some of the microelement concentrations might be expected to exceed the permitted values. Due to the fact that trace elements are absorbed by the surrounding sediments and soil and diluted by ground and surface waters, our estimation is that waste waters from the dump do not severelly jeopardize ground and surface waters.
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