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Novel PVC-Based Copper(II) Membrane Sensor Based on 2-(1′-(4′-(1″-Hydroxy-2″-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol

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Abstract

A copper(II) ion-selective PVC membrane sensor based on 2-(1′-(4′-(1″-hydroxy-2″-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol (BHNB) as a novel Schiff base containing a sensing material has been successfully developed. The sensor exhibits a good linear response of 29 mV per decade within the concentration range of 10-1 - 10-6 M of Cu2+. The sensor shows good selectivity for copper(II) ion in comparison with alkali, alkaline earth, transition and heavy metal ions. The BHNB-based sensor is suitable for use with aqueous solutions of pH 3.5 - 7.0 and displays minimal interference by Sr(II), Cd(II), Hg(II), Zn(II) and Pb(II), which are known to interfere with other previously suggested electrodes. The proposed membrane electrode was used as a sensor for determining the Cu(II) content in black tea samples. It was also applied as an indicator electrode in the potentiometric titration of Cu2+ ions with EDTA.

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Correspondence to Mohammad Reza Ganjali.

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Ganjali, M.R., Golmohammadi, M., Yousefi, M. et al. Novel PVC-Based Copper(II) Membrane Sensor Based on 2-(1′-(4′-(1″-Hydroxy-2″-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol. ANAL. SCI. 19, 223–227 (2003). https://doi.org/10.2116/analsci.19.223

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  • DOI: https://doi.org/10.2116/analsci.19.223

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