Skład chemiczny wód nadosadowych i roztworów porowych w osadach jeziora Wigry
PBN-AR
Instytucja
Wydział Geologii, Geofizyki i Ochrony Środowiska (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
PL
Czasopismo
Przegląd Geologiczny
ISSN
0033-2151
EISSN
2299-002X
Wydawca
Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
DOI
Rok publikacji
2015
Numer zeszytu
10/2
Strony od-do
1145--1149
Numer tomu
63
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.35
Autorzy
Słowa kluczowe
EN
chemical composition
Wigry Lake
pore water
dystrophic lake
Streszczenia
Język
EN
Treść
This research was conducted in the area of Wigry Lake, which is one of the largest and deepest lakes in Poland. It consists of several parts which differ in size, depth, number of islands, chemical composition of water and the nature of shores. To assess variations in chemical composition of the pore water and overlying water, seven research positions were selected. They belong to one of three zones: profundal, littoral and dystrophic. Water characteristics are presented in statistical approach, using the background concentrations determined by the probability method. Chemical composition of the overlying water taken from profundal locations is similar to that from littoral parts of the lake. These are multi-ion waters of HCO<sub>3</sub>–SO<sub>4</sub>–Ca, HCO<sub>3</sub>–SO<sub>4</sub>–Ca–Mg, HCO<sub>3</sub>–Ca, HCO<sub>3</sub>–Ca–Mg type. They have low mineralization (268–552 mg/dm<sup>3</sup>) and are weakly alkaline (pH from 7.49 to 7.77). The situation is different with the composition of the water taken from the dystrophic lake (SO4–Ca–Mg). These are low mineralization (28 mg/dm<sup>3</sup>) and acid waters (pH = 5.35). Dominant in pore solutions is multi-ion HCO<sub>3</sub>–Ca, HCO<sub>3</sub>–Ca–Mg or HCO<sub>3</sub>–SO<sub>4</sub>–Ca–Mg water with mineralization 445–2032 mg/dm<sup>3</sup> and pH between 7.39–8.23 (littoral positions), HCO<sub>3</sub>–Ca–SO<sub>4</sub> and HCO<sub>3</sub>–Ca–Mg water with mineralization 479–762 mg/dm<sup>3</sup> and pH from 7.59 to 7.89 (profundal positions). Definitely different chemical compositions have pore water from dystrophic lake: hydrochemical type changes with depth, from the HCO<sub>3</sub>–SO<sub>4</sub>–Ca, via HCO<sub>3</sub>–SO<sub>4</sub>–Ca–Na and HCO<sub>3</sub>–SO<sub>4</sub>–K–Ca, to the HCO<sub>3</sub>–O<sub>4</sub>–Na–Ca. Their mineralization is very low (49–69 mg/dm3) and pH changes from 7.25 to 8.01.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:093976