Abstract
Functional thin layers based on polypyrrole were used in electrochemical sensors as mixed conducting interfaces between ion-selective membranes and the wiring. In particular, new types of ion-selective electrodes for potentiometric measurement of pH value and concentration of sulfate ions in solutions were developed. The resulting electrodes do not need any inner liquid junction. First determinations of the sensor parameters sensitivity, selectivity and long term stability indicate a good performance of the prepared sensors. The results imply that interfaces, containing polypyrrole, could be an interesting basis for the construction of a new type of all-solid-state ion-selective electrodes.
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