Autor: Stępień, Dariusz. - Katalog OPAC zbiorów

Tytuł:: Geochemical relationships in CO2-rich therapeutic waters of the Sudetes (Poland)
Autorzy:: Dobrzyński, Dariusz
Stępień, Marcin
Szostakiewicz-Hołownia, Marzena
Humnicki, Włodzimierz
Powiązania:: https://bibliotekanauki.pl/articles/24024704.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: groundwater geochemistry
trace elements
therapeutic water
CO2-rich water
Sudetes
hydrogeochemia
pierwiastki śladowe
wody lecznicze
szczawy
Sudety
Opis:: Geochemical studies of CO2-rich therapeutic waters in the Sudetes have provided new data on a wide range of trace elements, going beyond standard chemical analyses of such waters. A consistent set of physicochemical data obtained using the same analytical methods was subjected to statistical analyses, including hierarchical clustering, factor analysis and nonparametric tests (Kruskal-Wallis, Tau Kendall), to reveal geochemical relationships between physicochemical and chemical parameters in the waters, and their relationships with the aquifer lithology. Distinct differences in the composition of waters found in crystalline rocks (mainly gneisses and mica schists) and sedimentary rocks were identified. The wide range of elements can be associated with the hydrolysis of silicate minerals, including alkali and alkali earth metals (Li, Na, K, Rb, Cs, Be) and (mostly) transition elements (Fe, Mn, Zn, Co, W, Mg). Carbonate equilibria are the next important factor as it determines the aggressiveness of the water towards the minerals of aquifer rocks and affects the concentrations of numerous solutes. The probable common origin of chlorides, bromides and sulphates together with Li, Na, Sr may be related to the relict saline component of deep circulating waters, a hypothesis that requires further investigations.
Źródło:: Acta Geologica Polonica; 2022, 72, 4; 479--493
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Geochemistry of germanium in thermal waters of the Jelenia Góra geothermal system (Sudetes, Poland) : solute relationships and aquifer mineralogy
Autorzy:: Dobrzyński, Dariusz
Tetfejer, Klaudia
Stępień, Marcin
Karasiński, Jakub
Tupys, Andrii
Słaby, Ewa
Powiązania:: https://bibliotekanauki.pl/articles/24459856.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Geologiczne
Tematy:: Germanium
groundwater geochemistry
geothermal water
granite geochemistry
Karkonosze Granite
Jelenia Góra geothermal system
Opis:: A long-term (2004–2021) study of the chemical composition of thermal waters in the Jelenia Góra geothermal system provided information on a wide set of components. The subject of the present study is the geochemistry of germanium (Ge), which occurs in concentrations ranging from 2.7 to 6.3 μg/L in the waters studied. Interpretation of a set of 46 chemical analyses identified relationships between germanium and other elements in thermal waters from individual intakes. In the old thermal waters of Cieplice and Karpniki of deep circulation, germanium is derived from silicates and its concentration is controlled by the solubility of Ge-bearing quartz with an average Ge content of 1.5 μg/g. The source of germanium in the deep old thermal water at Staniszów is mainly sulphides, most likely arsenopyrite, but the secondary contribution of Ge from silicates (biotites, amphiboles) should not be ignored. The mineral phase, responsible for controlling Ge activity in this water, cannot yet be identified. The shallow thermal waters at Cieplice, which are a mixture of old thermal waters and modern waters, differ from the deep waters. Germanium in shallow waters probably is derived from silicates, but owing to mixing, there are no chemical equilibrium conditions; the concentration of Ge is determined by the dynamic equilibrium of the mixed water components. The modern water of intake no. 2 (Cieplice) differs from other shallow waters and also shows similarities to the Staniszów water. The germanium in the no. 2 water probably comes mainly from ferromagnesian minerals (biotite, amphiboles), although the influence of sulphides cannot be excluded. The relationships of germanium to other elements, including the Ge/Si ratio, appear to be effective indicators of hydrogeochemical conditions. Thermal waters from the different locations show both similarities and differences in chemical composition,especially of minor and trace components. At the present, still weak stage of recognition, the Jelenia Góra geothermal system can be treated as an area of occurrence of local systems responsible for the quantity and quality of thermal waters in individual intakes.
Źródło:: Annales Societatis Geologorum Poloniae; 2023, 93, 3; 323--344
0208-9068
Pojawia się w:: Annales Societatis Geologorum Poloniae
Dostawca treści:: Biblioteka Nauki