%A ?. ?. ???????? %A ?. ?. ???????? %A ?. ?. ?????? %A D. Sternik %A ?. ?. ???????? %T Adsorption Properties of Silica Gels, In Situ Modified with Nitrogen-Containing Polymers with Complexing Properties for Ions Cu(II), Fe(III), Pb(II) %D 2025 %I Apple Academic Press %P 49-68 %L zu244308 %B Sustainability in Polymer Technology and Plastic Engineering Concepts, Strategies, and Opportunities