Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (10): 873-878.doi: 10.3866/PKU.WHXB20001003

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Interaction of Ca2+、La3+ and Eu3+ with NaDC Micelle

Sun Ying, Yang Zhan-Lan, Zhang Li, Weng Shi-Fu, Wu Jin-Guang   

  1. Colledge of Chemistry and Molecular Engineering,Peking University-The University of Hong Kong Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry,Peking University,Beijing 100871,China
  • Received:1999-12-11 Revised:2000-03-07 Published:2000-10-15
  • Contact: Wu Jin-Guang


The interactions of Ca2+ , La3+ and Eu3+ with NaDC were investigated by FTIR spectroscopy, element analysis and ICP analysis separately. The following conclusions have been deduced: (1) The structure and composition of resultants vary with the concentration and initial molar ratio of CaCl2 and NaDC. The resultant can be simple Ca(DC)2 complex with the composition of Ca(DC)2• 3H2O or complicated Ca(DC)2- NaDC complex with gel character and macromolecular network structure.(2) The structure and compositon of resultants obtained by reaction of LnCl3 and NaDC with various concentration and initial molar ratio are the same with one another. The resultants are all simple Ln(DC)3 complexes with the composition of Ln(DC)3• 6H2O.(3)Ideal models of the interaction of Ca2+ and Ln3+ with NaDC in vitro. have been suggested. The ability of Ln3+ destroying NaDC micelle is stronger than that of Ca2+ .

Key words: Deoxycholic acid, Deoxycholate complex, Micelle, FTIR spectra