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The selective removal of copper and lead ions from aqueous solutions by diethylenetriamine (DETA)-functionalized polymeric adsorbent was investigated. The adsorbent was prepared by amination of the micro-beads synthesized from glycidyl methacrylate and trimethylolpropane trimethacrylate co-polymerization (denoted as P-DETA). In the single metal species system (only copper or lead ions present), P-DETA...