Organosilicon ion-exchange and complexing sorbents

Published data of the last 10–12 years, including the results of systematic research of the authors, dealing with organosilicon ion-exchange and complexing sorbents are summarized and analyzed. The covalently modified silicas, non-covalently modified silicas and aluminosilicates and carbofunctional polyorganylsilsesquioxanes prepared by polycondensation of appropriate organosilicon monomers are considered. Sorbents of this type find extensive practical use, in particular, as analytical reagents for determination of metals in natural and artificial specimens, agents for isolation of valuable elements from industrial wastes and agents for removal of especially hazardous components from wastes and effluents. Bibliography — 109 references.