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A sensitive reagentless pH probe with a ca. 120 mV/pH unit response

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Abstract

The use of a basal plane pyrolitic graphite electrode immobilised with two redox active species each capable of undergoing a two-electron, two-proton redox process has allowed the development of a sensitive pH probe over a wide pH and temperature range. When the values of the peak potentials of the two processes are combined they shift by ca. 120 mV/pH unit at 25 °C, as measured against two independent, defined reference electrodes.

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Acknowledgments

GGW and NSL thank the Biotechnology and Biological Sciences Research Council and the Engineering and Physical Sciences Research Council respectively for financial support. The authors thank Schlumberger Cambridge Research for additional financial support of this project.

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Author notes

  1. Malingappagari Pandurangappa

    Present address: Department of Chemistry, Bangalore University, Central College Campus, 560 001, Bangalore, India

  2. Nathan S. Lawrence

    Present address: Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM, 88003, USA

Authors and Affiliations

  1. Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, UK

    Ian Streeter, Henry C. Leventis, Gregory G. Wildgoose, Malingappagari Pandurangappa, Nathan S. Lawrence & Richard G. Compton

  2. Schlumberger Cambridge Research, High Cross, Madingley Road, Cambridge, CB3 0EL, UK

    Li Jiang & Timothy G. J. Jones

Authors
  1. Ian Streeter
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  2. Henry C. Leventis
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  3. Gregory G. Wildgoose
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  4. Malingappagari Pandurangappa
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  5. Nathan S. Lawrence
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  6. Li Jiang
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  7. Timothy G. J. Jones
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  8. Richard G. Compton
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Corresponding author

Correspondence to Richard G. Compton.

Additional information

Dedicated to Zbigniew Galus on the occasion of his 70th birthday

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Streeter, I., Leventis, H.C., Wildgoose, G.G. et al. A sensitive reagentless pH probe with a ca. 120 mV/pH unit response. J Solid State Electrochem 8, 718–721 (2004). https://doi.org/10.1007/s10008-004-0536-7

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  • DOI: https://doi.org/10.1007/s10008-004-0536-7

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