CHELATE RESIN FOR ADSORPTION OF SPECIFIC HEAVY METAL ION

摘要

PURPOSE: A chelate resin for adsorbing a specific heavy metal ion and its preparation method are provided, to improve the adsorption property by increasing the hydrophilicity and adding unshared electron pairs to the structure. CONSTITUTION: The chelate resin comprises a side chain of a spherical polystyrene copolymer, where the side chain is a phenyl ring has an acetic acid group adjoining linearly to a sulfone amide structure chain as a functional group, and is represented by the formula 1, wherein A is H, Na or K. The method comprises the steps of reacting a spherical polystyrene copolymer which is prepared by the suspension copolymerization of styrene using divinyl benzene as a crosslinking agent, with chlorosulfonic acid to prepare a chlorosulfonated copolymer resin; and reacting the obtained chlorosulfonated copolymer resin with iminodiacetic acid.