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Solid-state sodium-selective sensors based on screen-printed Ag/AgCl reference electrodes

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Walsh, S, Diamond, D, McLaughlin, JAD, McAdams, E, Woolfson, D, Jones, D and Bonner, M (1997) Solid-state sodium-selective sensors based on screen-printed Ag/AgCl reference electrodes. ELECTROANALYSIS, 9 (17). pp. 1318-1324. [Journal article]

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Abstract

The potentiometric and AC impedance characteristics of all solid-state sodium-selective electrodes based on planar screen-printed Ag/AgCl electrodes are described. Two solid-state designs have been investigated. The first was based on the deposition of a sodium-selective PVC membrane directly on top of a screen-printed Ag/AgCl electrode, The second design included a NaCl doped hydrogel layer, between the PVC and Ag<span class='textbac'>k</span>slashAgCl layers. The hydrogel provides a mechanism to relieve any blockage to charge transfer occurring when PVC membranes are used directly on top of Ag/AgCl and also improves adhesion between the two layers. Results suggest the electrodes display Fast ion exchange kinetics, low noise and drift. The performance compares favorably to that of a conventional ion-selective electrode with internal filling solution.

Item Type:Journal article
Keywords:solid-state; ion-selective electrode; screen printing; sodium; calixarene; Ag/AgCl; AC impedance; potentiometry
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:18929
Deposited By:Mrs Ann Blair
Deposited On:19 Jul 2011 09:03
Last Modified:19 Jul 2011 09:03

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