Anthraquinone-derivatised carbon powder: reagentless voltammetric pH electrodes

Anthraquinone-derivatised carbon powder: reagentless voltammetric pH electrodes

A simple pH probe is developed based upon the covalent chemical derivatisation of carbon particles with anthraquinone. The amperometric response of electrodes constructed from this material is examined and shown to produce a Nernstian linear response to pH from 1 to 9, over a range of temperatures f...

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Veröffentlicht in:Talanta (Oxford) 2003-07, Vol.60 (5), p.887-893
Hauptverfasser: Wildgoose, Gregory G, Pandurangappa, Malingappagari, Lawrence, Nathan S, Jiang, Li, Jones, Timothy G.J, Compton, Richard G
Format: Artikel
Sprache:eng
Schlagworte:
Analytical chemistry
Anthraquinone
Chemistry
Derivatised carbon
Exact sciences and technology
General, instrumentation
High temperature
pH measurement
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Zusammenfassung:A simple pH probe is developed based upon the covalent chemical derivatisation of carbon particles with anthraquinone. The amperometric response of electrodes constructed from this material is examined and shown to produce a Nernstian linear response to pH from 1 to 9, over a range of temperatures from 20 to 70 °C, consistent with a two-electron, two-proton electrochemical process.
ISSN:0039-9140
1873-3573
DOI:10.1016/S0039-9140(03)00150-4