The Study of Nitrogen Doner Atoms Chelating Compounds for Removing Heavy Metals (Cd2+,Pb2+,Zn2+,Cu2+)

The new tridentate ligands of nitrogen donor atoms N,N-Bis(2-amino-ethyI)-benzyl-amine 2HCI(BABEA. 2HCI) and 2,6-Bis(amino-methyl)-pyridien. 2HCI(BAMP. 2HCI) were synthesized as their dihydrochloride salts and characterized by TA, IR. Mass and NMR spectroscopy. The protonation constants of the ligands and stability constants for Cd$^{2+}$, Pb$^{2+}$, Zn$^{2+}$and Cu$^{2+}$ ions were determined by potentiometric titration in aqueous solutions and compared with those of analogous ligands. The effect stability constants of ligands and metal ions for removal of heavy metals in aqueous solution were described.

중금속이몬(Cd2+,Pb2+,Zn2+,Cu2+)제거를 위한 질소를 주개원자로 하는 리간드들의 착화합물 형성에 관한 연구