Construction of a new Cu2+ coated wire ion selective electrode based on 2-((2-(2-(2-(2-hydroxy-5-methoxybenzylidene amino)phenyl)disufanyl)phenylimino)methyl)-4-methoxyphenol Schiff base |
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Authors: | Shokrollahi A Abbaspour A Ghaedi M Haghighi A Naghashian Kianfar A H Ranjbar M |
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Institution: | a Department of Chemistry, Yasouj University, Yasouj, Iran b Department of Chemistry, Shiraz University, Shiraz, Iran |
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Abstract: | In this article a new coated platinum Cu2+ ion selective electrode based on 2-((2-(2-(2-(2-hydroxy-5-methoxybenzylideneamino)phenyl)disufanyl)phenylimino) methyl)-4-methoxyphenol Schiff base (L1) as a new ionophore is described. This sensor has a wide linear range of concentration (1.2 × 10−7-1.0 × 10−1 mol L−1) and a low detection limit of 9.8 × 10−8 mol L−1of Cu(NO3)2. It has a Nernstian response with slope of 29.54 ± 1.62 mV decade−1 and it is applicable in the pH range of 4.0-6.0 without any divergence in potentioal. The coated electrode has a short response time of approximately 9 s and is stable at least for 3.5 months. The electrode shows a good selectivity for Cu2+ ion toward a wide variety of metal ions. The proposed sensor was successfully applied for the determination of Cu2+ ion in different real and environmental samples and as indicator electrode for potentiometric titration of Cu2+ ion with EDTA. |
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Keywords: | Cu2+ ion selective electrode Potentiometric sensors Coated platinum electrode Schiff base |
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