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Cobalt(II) ion-selective electrode with solid contact

  • Research Article
  • Published:
Central European Journal of Chemistry

Abstract

A new all plastic sensor for Co2+ ions based on 2-amino-5 (hydroxynaphtyloazo-1′)-1,3,4 thiadiazole (ATIDAN) as ionophore was prepared. The electrode exhibits a low detection limit of 1.5 × 10−6 mol L−1 and almost theoretical Nernstian slope in the activity range 4.0 × 10−6–1 × 10−1 mol L−1 of cobalt ions. The response time of the sensor is less than 10 s and it can be used over a period of 6 months without any measurable divergence in potential. The proposed sensor shows a fairly good selectivity for Co(II) over other metal ions. The electrode was successfully applied for determination of Co2+ in real samples and as an indicator electrode in potentiometric titration of Co2+ ions with EDTA.

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Authors and Affiliations

  1. Department of Analytical Chemistry and Instrumental Analysis, Faculty of Chemistry, M. Curie-Sklodowska University, 3 M Curie Sklodowska Square, 20031, Lublin, Poland

    Cecylia Wardak

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  1. Cecylia Wardak
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Correspondence to Cecylia Wardak.

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Wardak, C. Cobalt(II) ion-selective electrode with solid contact. cent.eur.j.chem. 6, 607–612 (2008). https://doi.org/10.2478/s11532-008-0060-1

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  • DOI: https://doi.org/10.2478/s11532-008-0060-1

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