The transport of amino acids by 18-crown-6 through liquid membranes |
| |
| Authors: | Lucia Mutihac Radu Mutihac Titus Constantinescu Constantin Luca |
| |
| Affiliation: | (1) Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, Bd. Carol I, 13, Bucharest, Roumania;(2) Faculty of Physics, University of Bucharest, P.O. Box MG-11, 76900 Bucharest, Roumania;(3) Physical Chemistry Institute, Roumanian Academy, Splaiul Independentei 202, 77208 Bucharest, Roumania;(4) Department of Analytical Chemistry, Polytechnic Institute, Splaiul Independentei 313, Bucharest, Roumania |
| |
| Abstract: | The possibility of separating in cationic form some  -amino acids (L-Methionine, L-Leucine, L-Isoleucine, L-Valine, L-Phenylalanine, L--Alanine and L-Cysteine) from mixtures in the presence of picrate anion has been investigated by means of active transport assisted by a pH gradient through liquid membranes. 18-Crown-6 in 1,2-dichloroethane has been used as a selective carrier. The effect of stirring rates at different volumes of the membrane, suggests a diffusional rate-limiting process of the amino acid transport. |
| |
| Keywords: | Amino acid liquid membrane 18-crown-6 active transport |
| 本文献已被 SpringerLink 等数据库收录！ |
|
