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The polymeric membrane electrodes based on N,N'-bis-pyridin-2-ylmethylene-naphthalene-1,8-diamine as an ion carrier were prepared and tested for the copper-ion selective electrode. The membrane has a linear dynamic range between and M with a Nernstian slope of 29.6 mV per decade, and its detection limit was M. The potentiometric response is independent of the pH range of 3-5. The proposed electrode showed good selectivity and response for over a wide variety of other metal ions in pH 4.0 buffer solutions.

Highly Copper(II)-selective PVC Membrane Based on a Schiff Base Complex of N,N'-Bis-pyridin-2-ylmethylene-naphthalene-1,8-diamine as an Ionophore