Development of an amperometric sensor for potassium ions
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Data
2008-01-01
Autores
Teixeira, Marcos F. S. [UNESP]
Lima, Alex S. [UNESP]
Seraphim, Patnicia Monteiro [UNESP]
Bocchi, Nerilso
Título da Revista
ISSN da Revista
Título de Volume
Editor
Insticc-inst Syst Technologies Information Control & Communication
Resumo
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.
Descrição
Palavras-chave
sensor for potassium ions, hollandite, voltarnmetry
Como citar
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.