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Selected Quality Indicators of Surface Waters of the Czestochowa City and Neighbouring Municipalities

Kończyk Joanna

Ecological Engineering & Environmental Technology

2021

Vol. 22, iss. 1

100--108

The surface water quality significantly affects the purity level of groundwater drawn for the municipal purposes. The pollution presence in surface waters is fundamentally the effect of the anthropogenic activity in a particular area while the type and volume of pollution depend closely on the intensity of any such activity. The paper presents the results of types of selected quality indicators of surface waters, i.e. pH, electrical conductivity and heavy metal concentration: Fe, Mn, Zn, Cu, Cd, Ni, Pb and Cr in the surface waters collected from the city of Czestochowa and neighbouring municipalities – the locations of water intakes and deep wells operated by the Water Supply and Sewerage Joint Stock Company of the Czestochowa District in order to provide the citizens with potable water. The findings of analyses of water collected every month in the period from January to September 2020 in 9 points were the basis for an observation of a time and space variability of the values of the quality parameters studied, which is evident of a diversified impact of the surroundings on water environment in consecutive research months. The potential water pollution sources were also indicated.

Selective solvent extraction of some heavy metal ions from aqueous solutions by octafunctionalized resorcin[4]arenes

Kończyk Joanna, Dlugosz Jan

Physicochemical Problems of Mineral Processing

2020

Vol. 56, iss. 2

271--285

This paper presents the results of the study on the extraction capacity of 1,8,15,22-tetra(1- heptyl)resorcin[4]arene and its octasubstituted derivatives containing thiophosphoryl, ester and amide groups in the presence of Pb(II), Zn(II), Cd(II) and Cr(III) in solvent extraction process. Effects of the structure and concentration of the resorcinarene extractant and the composition of the aqueous phase as well as its acidity on the efficiency and selectivity of removal of the examined metal ions from model aqueous solutions were determined. The 1:1 stoichiometry for complexes formed between Pb(II) and Cr(III) and the octasubstituted resorcin[4]arenes was determined by classical slope analysis and loading test.