3 results match your criteria: "Ain Shams University Cairo 11566 Egypt ahkamel76@sci.asu.edu.eg +20-1000361328.[Affiliation]"

Robust, reliable and cost-effective paper-based analytical device for potentiometric pholcodine (opiate derivative drug) ion sensing has been prepared and characterized. A printed pholcodinium (PHL)/5-nitrobarbiturate (NB) ion-association complex as a sensory material-based all-solid-state ion-selective electrode (ISE) on a chemically reduced graphene oxide (CRGO) solid-contact, and a printed all-solid-state Ag/AgCl reference electrode, has been combined on a hydrophobic paper substrate coated with fluorinated alkyl silane (CF(CF)CHCHSiCl, C ). The sensors revealed a potentiometric slope of 28.

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Article Synopsis
  • A new all-solid-state ion-selective potentiometric sensor for detecting sulfite ions in beverages is introduced, featuring a cobalt(ii) phthalocyanine-based polymeric membrane electrode.
  • Two solid-contact transducers—multi-walled carbon nanotubes (MWCNTs) and polyaniline (PANI)—were tested, showing rapid responses and low detection limits of 1.1 × 10 M and 1.5 × 10 M, respectively.
  • The sensors displayed high selectivity, sensitivity, and stability, making them suitable for quick and accurate sulfite measurement in food analysis, with results validated against a standard method.
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