Informace o publikaci

Application of spectroscopic methods in research of geochemical processes in the Upper Silesian Coal Basin



Rok publikování 2022
Druh Další prezentace na konferencích
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Popis The study deals with the influence of salt mine waters and waters draining coal heaps on the environment of the Upper Silesian Coal Basin (Czech Republic). The presence of highly mineralized mine waters and waters draining heaps leads to the formation of incrustations and minerals in the watercourses in the area. Samples of mine waters, river sediments and incrustations were examined from 4 localities. Samples of water were determined basic physical-chemical parameters and major ions. The content of elements in river sediments was determined by the XRF method.Mineral phase in the incrustations were determined by the XRD. To supplement the analyses Raman spectroscopy was performed with a LabRAM- HR Evolution and Olympus BX-41 microscope, where pilot measurements were obtained by a green laser (?=532 nm) with changing intensity setting according to the studied phase ranging from 1-25%. All monitored river sediments show a strong to excessive zinc loading. River sediments directly affected by the mine aquifer contain increased amounts of vanadium, strontium and manganese. These are elements that are also present in increased amounts in mine waters. The pH values reach neutral to weakly basic values in all monitored localities (7.3-8.3). The quality of surface water on the studied streams varies greatly depending on the distance from mine drain. In the evaluated surface waters, the hydrochemical types of water Na-Cl a, Ca-SO 4 with a variable content of bicarbonates were distinguished, which significantly contribute to the formation of incrustations at the drain. Similar to sediments and waters, like that incrustation show a increased amounts concentration of zinc, strontium, manganese and vanadium with enrichment of arsenic, nickel, thorium and uranium. X-ray diffraction determinated to us approximate mineral composition of incrustation. All incrustation are composed of largely by the carbonate form. Of the minerals are formed by calcite, aragonite, monohydratecalcite, magnesium calcite, halite, gypsum and quartz low. Raman spectroscopy was confirmed the occurrence of calcite and aragonite in incrustations. Whereas monohydratecalcite rather behaved like metaphase with trona or nitratine. All samples examined has been reported high value of luminescence.

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