Abstract
The bulk liquid membrane transport of silver (I) ion was studied by dibenzopyridino-18-crown-6(DBPY18C6), 4-nitrobenzo-15-crown-5(NB15C5), 2-aminothiaphenol and a new synthesized ligand, 1,4-dioxa-7,10-dithiacyclododecane-2,3-dione as carriers in nitrobenzene (NB). The effects of pH on the source phase and receiving phase, the nature and concentration of stripping agents in the receiving phase and the picrate concentration as counter ion in source phase were investigated. The results show that the efficiency of transport of the Ag+ ion through membranes, changes with the nature of the ligand. The efficiency transport increases for the ligands with donating nitrogen and sulfur atoms with respect to oxygen donor atoms. Maximum transport efficiency was observed for silver (I) ion in the presence of thiosulfate ion ( \( {\text{S}}_{{\text{2}}} {\text{O}}^{{2-}}_{{\text{3}}} \)) as a suitable stripping agent. The results show that the sequence of transport efficiency for Ag+ ion using DBPY18C6, NB15C5, 2-aminothiaphenol and 1,4-dioxa-7,10-dithiacyclododecane-2,3-dione as carriers in organic solvents is: nitrobenzene > dichloromethane > 1,2- dichloroethane > chloroform.
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Rounaghi, G.H., Kazemi, M.S. & Sadeghian, H. Transport of silver ion through bulk liquid membrane using macrocyclic and acyclic ligands as carriers in organic solvents. J Incl Phenom Macrocycl Chem 60, 79–83 (2008). https://doi.org/10.1007/s10847-007-9355-7
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DOI: https://doi.org/10.1007/s10847-007-9355-7