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Selective transport of Ag (I) ion across a bulk liquid incorporated with dibenzo 18-crown-6 (DB18C6) as carrier
Azizollah Nezhadali (1,*) , Fatemeh Moein Pour (2)
(1) Department of Chemistry, Payame Noor University, Mashhad-868-31, Iran
(2) Department of Chemistry, Payame Noor University, Mashhad-868-31, Iran
(*) Corresponding Author
Received: 13 May 2011 | Accepted: 27 Jul 2011 | Published: 31 Dec 2011 | Issue Date: December 2011
The competitive metal ion transport of Ag(I), Co(II), Ni(II), Zn(II), Cu(II), Cd(II) and Mn(II) cations with dibenzo-18-crown-6 (DB18C6) were studied and compared. The source phase contained equimolar concentration of the metal cation and the organic phase contained the ligand (DB18C6) in an organic solvent. The concentrations in the all transport experiments for the cations and ligand were 0.01 M and 1.0×10-3 M, respectively. The source phase solutions were buffered (acetic acid/sodium acetate) at pH 4-6. The transports of Cu(II), Ag(І) and Co(II) with DB18C6 are possible in the mixture, but the transport efficiency for Ag(І) ion is much better than the other cations. The presence of dichloromethane and 1,2 dichloroethane were optimized in the organic phase. The results show the transport efficiency depends to the types of thiourea and potassium thiocyanate ligands in the receiving phase. The results show that the presence of palmetic acid in the membrane phase improves the efficiency of the transport for Ag(І) cation.
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European Journal of Chemistry
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DOI Link: https://doi.org/10.5155/eurjchem.2.4.499-502.461
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European Journal of Chemistry 2011, 2(4), 499-502 | doi: https://doi.org/10.5155/eurjchem.2.4.499-502.461 | Get rights and content
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