Research Article - Chemistry

Arabian Journal for Science and Engineering

, Volume 38, Issue 7, pp 1681-1689

Open Access This content is freely available online to anyone, anywhere at any time.

Ni2+ Selective Membrane Sensors Based on Sulfamethoxazole Diazonium Resorcinol in Poly (Vinyl Chloride) (PVC) Matrix

  • Fathi A. G. ElsaidAffiliated withChemistry Department, Faculty of Science, Menoufia University
  • , Salem HamzaAffiliated withChemistry Department, Faculty of Science, Menoufia University
  • , Nashwa RizkAffiliated withChemistry Department, Faculty of Science, Menoufia University
  • , Hamdy A. B. MatterAffiliated withChemistry Department, Faculty of Science, Menoufia University Email author 
  • , Elsayda A. S. AmerahAffiliated withChemistry Department, Faculty of Science, Tanta University

Abstract

PVC-based membranes of sulfamethoxazole diazonium resorcinol (SDR) as electroactive material with dioctylphthalate (DOP), Dioctylsebacate (DOS), o- Nitroph enyloctylether (o-NPOE) as plasticizing solvent mediators have been found to act as Ni2+ selective sensor, the best performance was obtained with the sensor having a membrane of composition plasticizer:PVC:ionophore in the ratio 200:100:5 mg. The sensor exhibits Nernstian response in the activity range 5 × 10−6 to 1.0 × 10−1 M, performs satisfactorily over a wide pH range (5–9), with a fast response time (10 s). The sensor was found to work satisfactorily in partially different internal solution concentrations and could be used over a period of 2 months. Potentiometric selectivity coefficients determined by matched potential method (MPM) indicate excellent selectivity for Ni2+ ions. The sensors could be used successfully in the estimation of nickel as an indicator electrode in potentiometric titration.

Keywords

Poly (vinyl chloride) PVC membrane Nernstian slopes Nickel ion sensor Potentiometry Ion selective electrodes Sulfamethoxazole diazonium resorcinol
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