A novel Mn PVC membrane electrode based on a recently synthesized Schiff base |
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Authors: | Mohammad Hossein Mashhadizadeh Ehsan Pour Taheri |
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Institution: | a Faculty of Chemistry, Tarbiat Moallem University, Tehran, Iran b Chemistry Department, Shahid Bahonar University of Kerman, Kerman, Iran |
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Abstract: | A new PVC membrane electrode for manganese(II) ion based on a recently synthesized Schiff base of 5-(4-nitrophenylazo)-N-hexylamine]salicylaldimine is reported. The electrode exhibits a Nernstian response for Mn2+ ions over a wide concentration range (4.0 × 10−7 to 1.8 × 10−2 mol L−1) with a slope of 30.1 (±1.0). The limit of detection is 1.0 × 10−7 mol L−1. The electrode has a fast response time (∼10 s), a satisfactory reproducibility and relatively long life time. The proposed sensor revealed good selectivities over a wide variety of other cations include hard and soft metals. This electrode could be used in a pH range of 4.5-7.5. It was used as an indicator electrode in potentiometric titration of manganese(II) ions with EDTA solution. |
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Keywords: | Manganese(II)-selective electrode Schiff base PVC membrane electrode Potentiometry |
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