R. Kozłowski1, J. Przybylska2, M. Szwed1,2
1) Jan Kochanowski University in Kielce, Department of Environmental Protection and Modelling, Kielce, PL;
2) Jan Kochanowski University in Kielce, Institute of Geography, Kielce, PL
WATER CHEMISTRY OF SMALL UPLAND RIVERS IN THE ŚWIĘTOKRZYSKIE MOUNTAINS – HEAVY METALS
Concentration of selected heavy metals (Pb, Cd, Co, Cr, Cu, Mn, Ni, Zn) was analysed in six small upland rivers in the Świętokrzyskie Mountains – Lubrzanka, Gawlica, Belnianka (the Nida River catchment area) and Psarka, Czarna Woda and Pokrzywianka (the Kamienna River catchment area). Eight subcatchments differing in terms of geological structure and land use were examined. Water samples were collected once a month from November 2015 to October 2016. Concentrations of dissolved metals were measured with the use of mass spectrometer ICP/MS-TOF. The concentrations of none of the analysed metals exceeded the thresholds for the first class of surface water quality. The highest annual mean concentrations were noted for manganese (37-622 μg·dm-3), zinc (7-22 μg·dm-3) and nickel (3-5 μg·dm-3). The concentrations of copper and chromium were similar (from 2 to 3 μg·dm-3), while those of lead, cobalt and cadmium were lower than 1 μg·dm-3. Within a year the highest diversity was noted among the concentrations of manganese (V = 126-284%), which were the highest in spring and summer. The highest concentrations of zinc, nickel and copper were noted in the snow melt season. Possible links between the dominating forms of land use and dynamics of concentrations of heavy metals in surface waters were discussed.
Keywords: water quality, diverse classes of land cover