Development of an amperometric sensor for potassium ions
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Undergraduate course
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Insticc-inst Syst Technologies Information Control & Communication
Type
Work presented at event
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Acesso aberto
Abstract
Hollandite-type manganese oxides are nanofibrous crystals with sub-nanometer open tunnels that provide a unique property for sensing applications. Sensor based on hollandite-type manganese oxide was investigated for amperometric detection of potassium. With an operating potential of +0.63 V versus SCE, potassium ions produce oxidation currents at the sensor, which can be exploited for quantitative determinations. The amperometric signals are linearly proportional to potassium ions concentration in the range 2.7 x 10(-4) to 9.1 x 10(-4) Mol l(-1) with a correlation coefficient of 0.9990. The construction and renewal are simple and inexpensive.
Description
Keywords
sensor for potassium ions, hollandite, voltarnmetry
Language
English
Citation
Biodevices 2008: Proceedings of The First International Conference on Biomedical Electronics and Devices, Vol 1. Setubal: Insticc-inst Syst Technologies Information Control & Communication, p. 198-201, 2008.
