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In order to prepare a new adsorbent material for the treatment of waste water containing Pb(II), hyperbranched polyamide‐amines (H‐PAMAMs) were prepared via one‐pot method, then the H‐PAMAMs were crosslinked by epichlorohydrin. The crosslinked hyperbranched polyamide‐amines (C‐H‐PAMAMs) were prepared and characterized. The selective adsorption of coexisting ions shows that the C‐H‐PAMAMs have high...