Alkali ion sensor based on Prussian blue-covered interdigitated array electrodes

Hartmann, M. and Grabner, E.W. and Bergveld, P. (1991) Alkali ion sensor based on Prussian blue-covered interdigitated array electrodes. Sensors and Actuators B: Chemical, 4 (3-4). pp. 333-336. ISSN 0925-4005

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Abstract:	Thin films of ferric ferrocyanide (Prussian Blue) were electrochemically deposited on interdigitated array (IDA) electrodes yielding systems which can be considered as chemi-resistors in sensing alkali ion concentrations in an adjacent electrolyte. From the dependence of the steady-state current on the electrode (bias) potential at variable cation concentrations for different alkali ions and for mixtures of alkali ions, the possibilities of analytical application are elucidated. It is concluded that Prussian Blue-coated IDA electrodes are, in principle, suitable as chemiresistors for the determination of alkali ion concentrations with increasing selectivity in the series Li < Na < K < Rb < Cs.
Item Type:	Article
Copyright:	© 1991 Elsevier Science
Research Group:	Biomedical and Environmental Sensor systems (BIOS)
Link to this item:	http://purl.utwente.nl/publications/15293
Official URL:	http://dx.doi.org/10.1016/0925-4005(91)80132-4
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