|
KMID : 1059519950390040266
|
|
Journal of the Korean Chemical Society
1995 Volume.39 No. 4 p.266 ~ p.274
|
|
|
Solvent Extraction of Eu3+ and Tb3+ Ions with 12-Crown-4 15-Crown-5 and 18-Crown-6
|
|
Kim Eun-Jeong
Yoon Soo-Kyung
Bae Jun-Hyun
Kang Jun-Gill
Kim Youn-Doo
|
|
|
Abstract
|
|
|
|
The extractions of aqueous Eu3+ and Tb3+ ions into ethylacetate or dichloromethane were conducted by using 12-crown-4, 15-crown-5 and 18-crown-6 ethers as ligand. Benzoate ion was selected as counter anion for the complexes formed between the lanthanide ions and crown ethers. Fluorescence spectra of the lanthanide ions induced by the energy transfer from benzoate anion to the cations were also measured. The quantitative analysis of the lanthanide ions extracted into organic phase were made on the basis of the results of fluorescence. The measured extractivity is interpreted in terms of the ion-dipole interaction.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|