|
KMID : 1059519900340060582
|
|
Journal of the Korean Chemical Society
1990 Volume.34 No. 6 p.582 ~ p.592
|
|
|
Retention Behavior of Lanthanide Complexes with α-hydroxyisobutyric Acid on Cation Exchanger
|
|
Joe Kih-Soo
Han Sun-Ho
Suh Moo-Yul
Eom Tae-Yoon
Kim Youn-Doo
|
|
|
Abstract
|
|
|
|
Retention behavior of lanthanide-αHiBA complexes was studied on the cation exchanger (LC-18 coated with C20H41SO4-). An equation predicting retention of lanthanides in isocratic or gradient elution with sodium ion and α-HiBA concentration was derived from ion exchange equilibria of metal-ligand complex system, respectively. The relations between log k' and log [Na+] /log [α-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'Ln3+, k'LnL2+, k'LnL2+) and stability constant (β1, β2, β3) of lanthanide-αHiBA 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.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|