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Triple Component Carbon Epoxy pH Probe
Author(s) -
Lawrence Nathan S.,
Pagels Markus,
Hackett Simon F. J.,
McCormack Sean,
Meredith Andrew,
Jones Timothy G. J.,
Wildgoose Gregory G.,
Compton Richard G.,
Jiang Li
Publication year - 2007
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200603725
Subject(s) - ferrocene , epoxy , carbon fibers , electrode , redox , chemistry , anthraquinone , inorganic chemistry , analytical chemistry (journal) , electrochemistry , materials science , organic chemistry , composite number , composite material
A pH probe based on a carbon‐epoxy electrode design is discussed. The electrode consists of three redox active components within a carbon epoxy matrix. These are the pH sensitive species anthraquinone and phenanthrenequinone, along with the pH insensitive ferrocene reference compound. The values of the peak potentials when combined are shown to shift by 120 mV/pH unit at 25 °C with respect to the ferrocene reference potential.