European Journal of Chemistry

Selective transport of Ag (I) ion across a bulk liquid incorporated with dibenzo 18-crown-6 (DB18C6) as carrier

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Azizollah Nezhadali
Fatemeh Moein Pour


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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Nezhadali, A.; Pour, F. M. Selective Transport of Ag (I) Ion across a Bulk Liquid Incorporated With Dibenzo 18-Crown-6 (DB18C6) As Carrier. Eur. J. Chem. 2011, 2, 499-502.

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Research Council of Payame Noor University Mashhad, Iran
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