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KMID : 1024520030120040497
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Journal of the Environmental Sciences
2003 Volume.12 No. 4 p.497 ~ p.501
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The Study of Nitrogen Doner Atoms Chelating Compounds for Removing Heavy Metals (Cd[2+], Pb[2+], Zn[2+], Cu[2+])
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Kim Sun-Deuk
Kim Jun-Kwang
Kim Jung-Sung
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Abstract
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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, Pb, Znand Cu 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.scribed.
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KEYWORD
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Heavy metals, Protonation Constants, Stability Constants, Potentiometry
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