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The influence of dispersing agent used to prepare carbon nanotubes solid‐contact on the performance of all‐solid state ion‐selective electrodes has been evaluated. It is shown that excess of surfactant dispersing agent is leading to deterioration of sensor performance, however, removal of dispersing agent – a typically applied approach – is resulting in substantial change of transducer layer physical...
All-solid-state ion-selective electrodes with conducting polymer solid contact represent good analytical parameters, comparable with those of classical sensors with internal filling solution. One of parameters characterizing quality of the solid contact, related to ion-to-electron transduction, is the electrical capacitance. However, in many cases this capacitance is lower than for the solid contact...
Carboxy-functionalized graphene was used as a solid contact for potassium ion-selective electrodes with poly(vinyl chloride) based membrane. Transducer layers were obtained simply by application of a dispersion of graphene derivative in water. Analytical performance of thus obtained sensors was compared with that of all-solid-state sensors with typical transducer materials: poly(octylthiophene) applied...
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