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Attributes of large-amplitude fourier transformed alternating current voltammetry at array and single carbon fiber microdisk electrodes

Journal Article


Abstract


  • The attributes of large-amplitude Fourier transformed AC voltammetry have been assessed at electrodes constructed from either a single carbon fiber microdisk or a random assembly of carbon fiber microdisks (RAM). Factors that govern the limits of detection for the FcMeOH and uric acid analytes have been established. For the reversible FcMeOH oxidation process, the RAM electrode provides the lower limit of detection through substantial amplification of the peak current magnitude, and hence superior faradaic current-to-noise ratio. In contrast for the overall two-electron oxidation of uric acid, the much faster electron transfer rate achieved at the electrochemically treated single carbon fiber microelectrode provides the lower detection limit, which is again optimal in the sixth harmonic. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

UOW Authors


  •   Lee, Chong Yong
  •   Elton, Darrell (external author)
  •   Brajter-Toth, Anna (external author)
  •   Bond, Alan M. (external author)

Publication Date


  • 2013

Citation


  • Lee, C., Elton, D., Brajter-Toth, A. & Bond, A. M. (2013). Attributes of large-amplitude fourier transformed alternating current voltammetry at array and single carbon fiber microdisk electrodes. Electroanalysis, 25 (4), 931-944.

Scopus Eid


  • 2-s2.0-84876316416

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1675

Has Global Citation Frequency


Number Of Pages


  • 13

Start Page


  • 931

End Page


  • 944

Volume


  • 25

Issue


  • 4

Place Of Publication


  • Germany

Abstract


  • The attributes of large-amplitude Fourier transformed AC voltammetry have been assessed at electrodes constructed from either a single carbon fiber microdisk or a random assembly of carbon fiber microdisks (RAM). Factors that govern the limits of detection for the FcMeOH and uric acid analytes have been established. For the reversible FcMeOH oxidation process, the RAM electrode provides the lower limit of detection through substantial amplification of the peak current magnitude, and hence superior faradaic current-to-noise ratio. In contrast for the overall two-electron oxidation of uric acid, the much faster electron transfer rate achieved at the electrochemically treated single carbon fiber microelectrode provides the lower detection limit, which is again optimal in the sixth harmonic. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

UOW Authors


  •   Lee, Chong Yong
  •   Elton, Darrell (external author)
  •   Brajter-Toth, Anna (external author)
  •   Bond, Alan M. (external author)

Publication Date


  • 2013

Citation


  • Lee, C., Elton, D., Brajter-Toth, A. & Bond, A. M. (2013). Attributes of large-amplitude fourier transformed alternating current voltammetry at array and single carbon fiber microdisk electrodes. Electroanalysis, 25 (4), 931-944.

Scopus Eid


  • 2-s2.0-84876316416

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1675

Has Global Citation Frequency


Number Of Pages


  • 13

Start Page


  • 931

End Page


  • 944

Volume


  • 25

Issue


  • 4

Place Of Publication


  • Germany