Highly selective and efficient membrane transport of zinc as its thiocyanate complex anion using K+-dibenzo-18-crown-6 as a carrier

Authors
Jabbari, A Mousavi, MR Shamsipur, M
Citation
A. Jabbari et al., Highly selective and efficient membrane transport of zinc as its thiocyanate complex anion using K+-dibenzo-18-crown-6 as a carrier, I J CHEM A, 38(8), 1999, pp. 808-811
Citations number
23
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
38
Issue
8
Year of publication
1999
Pages
808 - 811
Database
ISI
SICI code
0376-4710(199908)38:8<808:HSAEMT>2.0.ZU;2-P
Abstract
A simple, selective and efficient liquid membrane system for the transport of Zn2+ ion has been designed. In this system, potassium-dibenzo-18-crown-6 is used as a carrier for the uphill transport of zinc as Zn(SCN)(4)(2-) co mplex ion through a chloroform membrane, using cysteine as a suitable strip ping agent in the aqueous receiving phase. Under the optimal experimental c onditions, the amount of zinc transported through the liquid membrane after 90 min is found to be 97 +/- 1 percent. The selectivity and efficiency of zinc transported from aqueous,solutions containing Ag+, Sr2+, Mn2+, Co2+, N i2+ Cu2+, Cd2+, Pb2+, Hg2+, Pd2+, Fe3+, Bi3+ and Cr3+ ions have been studie d.