Abstract
The construction of a multisensor array based on coated-film sensors is described. The pH, K +, Na + and Ca 2+ sensors studied so far show excellent electrode properties comparable to these of commercial ion-selective electrodes (ISE); the main attributes are the Nernst response over a wide concentration range, a good selectivity and short response times. They are similar, to coated-wire electrodes, but instead of a metal wire, a thin conductive metal layer manufactured in thin-film technology is used. It is shown that these transducers can be used for the development of a low-cost sensor for the determination of the ion activity in a simple way by potentiometric differential measurement. They can be applied to biomedical measurements, especially for blood analysis.
Published Version
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