Manganese (M-selective PVC membrane electrode based on N-(2- picolinamido ethyl)-Picolinamide as ionophore

Subject Areas : Journal of Physical & Theoretical Chemistry

M. Zawari ¹ , M. Giahi ² , H. Aghaie ³

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Received: 2015-05-09 Accepted : 2015-05-09 Published : 2009-02-01

Keywords: Manganese(II)-selective electr, PVC membrane, N-(2-Picolinamido ethyl)- Pico, Potentiometry,

Abstract :

In this research, a PVC membrane electrode for Manganese (II) ions based on N-(2-Picolinamidoethyl)Picolinamide as neutral carrier was prepared. The electrode exhibits a Nemstian responseover Mn(II) concentration range of (1.0 x10-5 t01.0 X 10-1M) with a slope of 29.3±0.5 mV perdecade of concentration with a working pH range of 4.0-9.0. It has a fast response time (<15s) andcan be used for at least two months without any considerable divergence in the potential. Theproposed sensor shows a fairly good discriminating ability towards Mn2+ ion in comparison tosome hard and soft metal ions. Selectivity coefficients determined by the matched potentialmethod (MPM). The electrode was applied to the determination of Manganese (II) ions in realsamples.