The new tridentate ligands of nitrogen doner atoms N,N-Bis(2-amino-ethyl)-benzyl-amine·2HCl(BABEA·2HCl) and 2,6-Bis(amino-methyl)-pyridien·2HCl(BAMP·2HCl) were synthesized as their dihydrochloride salts and characterized by EA, IR, Mass and NMR spectroscopy. The protonation constants of the ligands and stability constants for Cd2+, Pb2+, Zn2+and Cu2+ 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.

• 김선덕(대구대학교 자연과학대학 물질과학부) | Sun-Deuk Kim
• 김준광(대구대학교 자연과학대학 물질과학부) | Jun-Kwang Kim
• 김정성(대구대학교 사범대학 과학교육학부) | Jung-Sung Kim Corresponding Author