Some sorption characteristics of silica gel with covalently immobilized pyridine-containing formazans

Abstract

Investigation of the behavior of system "sorbent - sorptive " in a multi-component conditions of
various levels concentrations of sorptives is one of the most complex problems of modern analytical
chemistry. The objects of the study were silica gel covalently immobilized pyridine-containing formazans.
The coefficients of distribution, maximum capacity of Cu (II), Co (II), Cd (II) and Ni (II) during sorption of a
modified silica gel from solutions was obtained. Kinetic sorption of metals were investigated, experimental
data were processed by the equations kinetic models pseudo-second-order. It was shown that the competitive
adsorption is realized on the obtained complexing materials such as non-additive process at different
concentration levels of sorptives.