TITLE

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

AUTHOR(S)
Elsaid, Fathi; Hamza, Salem; Rizk, Nashwa; Matter, Hamdy; Amerah, Elsayda
PUB. DATE
July 2013
SOURCE
Arabian Journal for Science & Engineering (Springer Science & Bu;Jul2013, Vol. 38 Issue 7, p1681
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
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 Ni 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 to 1.0 × 10 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 Ni ions. The sensors could be used successfully in the estimation of nickel as an indicator electrode in potentiometric titration.
ACCESSION #
88005872

 

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