Chelation Regularities in the Series
of Chelating Polymer Sorbents and Their Complexes
with Vanadium, Manganese, and Chromium

N. N. Basargin*, E. R. Oskotskaya**, V. G. Senchakov**, and Yu. G. Rozovskii*

* Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences,
ul. Kosygina 19, Moscow, 117975 Russia

** Orel State University, Orel, Russia

Received February 21, 2000

Abstract—Physical and chemical properties of substituted polystyrene-azosalicylic acids, newly synthesized
chelating polymer sorbents (CPSs), are studied. Correlations are found between the K of the functional
groups of the sorbent and the p₅₀ of chelation with vanadium, manganese, and chromium, with the goal of
studying (metal ion)–sorbent interactions. These correlations enable the prediction of the physical and chemical
parameters of a sorbent and of the sorption of metal cations, targeted at concentrating and separating trace vana-
dium(IV), manganese(II), and chromium(III) from solutions and natural or technogenic (including environ-
mental) objects.

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