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Novel ion-exchange resins have been prepared by condensation polymerization with formaldehyde of dibenzo acyclic and cyclic polyethers bearing a pendent acidic function (carboxylic acid, phosphonic acid monoethyl ester, phosphonic acid, or sulfonic acid). Such resins possess both ion-exchange and polyether-binding sites for metal-ion complexation. The efficiency of Pb 2+ sorption and...
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