Retention Behavior of Lanthanide Complexes with $\alpha$ -hydroxyisobutyric Acid on Cation Exchanger

양이온 교환체에서 희토류원소와 $\alpha$-Hydroxyisobutyric Acid 착물들의 머무름 거동에 관한 연구

  • 조기수 (한국원자력연구소 원자력화학연구팀) ;
  • 한선호 (한국원자력연구소 Nuclear Chemistry Research Division) ;
  • 서무열 (한국원자력연구소 원자력화학연구팀) ;
  • 엄태윤 (한국원자력연구소 원자력화학연구팀) ;
  • 김연두 (충남대학교 화학과)
  • Published : 19901100

Abstract

Retention behavior of lanthanide-$\alpha$HiBA complexes was studied on the cation exchanger (LC-18 coated with $C_{20}H_{41}SO_4^-$). An equation predicting retention of lanthanides in isocratic or gradient elution with sodium ion and $\alpha$-HiBA concentration was derived from ion exchange equilibria of metal-ligand complex system, respectively. The relations between log k' and log [Na$^+$] /log [$\alpha$-HiBA) showed non-linearity in isocratic elution. In gradient elution a good linearity between log k' vs log R was obtained. The values of slopes (log k / log R) gave good agreements between calculation and experiment. Individual capacity factors ($k'_{Ln}^{3+}, k'_{LnL}^{2+}, k'{LnL2+}) and stability constant (${\beta}_1$, ${\beta}_2$, ${\beta}_3$) of lanthanide-$\alpha$HiBA complexes were calculated by the non-linear least square fittings using the retention equation. The correlation coefficients of lanthanides were shown better than 0.9996 between experiment and calculation.

Keywords

References

  1. J. Chromatogr. v.411 R. D. Rocklin
  2. Basic Scientific Subroutines v.II F. R. Ruckdeschel
  3. Analyst v.114 R. M. Smith;S. J. Bale;S. G. Westcott;M. M. Smith
  4. Anal. Chem. v.59 J. P. Foley;W. E. May
  5. Anal. Chem. v.50 no.3 D. J. Pietrzyk;E. P. Kroeff;T. D. Rotsch
  6. Ion Exchange Friedrich Helfferich
  7. Separation and preconcentration methods in inorganic trace analysis M. R. Masson
  8. J. Chromatogr. v.439 D. T. Gjerde
  9. Dissertation of Royal Institute Technology Kastriot Spahiu
  10. Stability Constants of Metal-Ion Complexes, Part II: Organics including macromolecle Ligands The Chemical Society
  11. Talanta v.14 D. D. Perrin;I. G. Sayce