Application of a New Macrocyclic -PVC Electrode to Potentiometric Studies of Fe(III) Ion

Subject Areas : Journal of Physical & Theoretical Chemistry

R. Aminameli ¹ , M. H. Fekri ² , H. Shafie ³ , M. Darvishpour ⁴ , H. Khanmohammadi ⁵

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Received: 2014-04-25 Accepted : 2014-04-25 Published : 2012-07-01

Keywords: Ion selective electrode, PVC membrane, Fe(III) determination, Macrocyclic ionophore,

Abstract :

A PVC membrane Fe(III) ion selective electrode has been constructed using a new macrocyclic asmembrane carrier.The electrode exhibits a good potentiometric response for Fe(III) over a wideconcentration range 1.0×10-4 to 1.0×10-1M with a slope 19.4±0.5 mV/decade a and a working pHrange of 6.5-9.0. It has a fast response time ≤30s.The best performance was observed with themembrance having the 30.5% PVC,3.0% ligand, 61.0% acetophenone and 5.5% oleic acidcomposition.

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Application of a New Macrocyclic -PVC Electrode to Potentiometric Studies of Fe(III) Ion