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

محورهای موضوعی : 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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تاریخ دریافت : 1393/02/05 تاریخ پذیرش : 1393/02/05 تاریخ انتشار : 1391/04/11

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

چکیده مقاله :

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.