AMINO ACID;
LIQUID MEMBRANE;
18-CROWN-6;
ACTIVE TRANSPORT;
D O I:
10.1007/BF00707999
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The possibility of separating in cationic form some alpha-amino acids (L-Methionine, L-Leucine, L-Isoleucine, L-Valine, L-Phenylalanine, L-alpha-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.