Main Article Content
In the bottom sediments of Lake Wicko sorption capacity and the sum of exchangeable bases was defined as well as total content of ions H+, Al3+, Zn2+, Ni2+, CO2+, NH4+, Rb+ and Li+. The concentration of Ca2+, Mg2+, Na+ and K+ cations has been measured. The ratio of exchangeable ions bound in the sorption complex and ions adsorbed on the surface of sediments was defined as a function of respective kinds of cations and composition of the bottom sediments. The content of the organic matter was decisive for an increase of the exchangeable sorption capacity.
Key words: lakes, bottom sediments, sorption complex, cations