Analytical and Bioanalytical Chemistry

, Volume 381, Issue 4, pp 979–985

A comparison of different types of gold–carbon composite electrode for detection of arsenic(III)

  • Andrew O. Simm
  • Craig E. Banks
  • Shelley J. Wilkins
  • Nikos G. Karousos
  • James Davis
  • Richard G. Compton
Original Paper

DOI: 10.1007/s00216-004-2960-z

Cite this article as:
Simm, A.O., Banks, C.E., Wilkins, S.J. et al. Anal Bioanal Chem (2005) 381: 979. doi:10.1007/s00216-004-2960-z
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Abstract

A study has been conducted using abrasively modified basal and edge-plane graphite, carbon-paste, and carbon–epoxy electrodes to create gold–carbon composite electrodes. Using either nano or micro-sized gold particles their suitability for use in detecting arsenic(III) is assessed. It was found that gold arrays prepared from micron-sized particles gave the best performance for arsenic detection. In particular micron arrays produced in carbon-paste electrodes with an easily renewable surface work well for detection of arsenic, producing a detection limit of 5(±2)×10−9 mol L−1, with a high sensitivity of 10(±0.1) A mol−1 L.

Keywords

Arsenic(III)Carbon-paste electrodesAnodic stripping voltammetryGold microarraysGold nanoarrays

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Andrew O. Simm
    • 1
  • Craig E. Banks
    • 1
  • Shelley J. Wilkins
    • 2
  • Nikos G. Karousos
    • 3
  • James Davis
    • 3
  • Richard G. Compton
    • 1
  1. 1.Physical and Theoretical Chemistry LaboratoryOxford UniversityOxfordUK
  2. 2.Department of MaterialsOxford UniversityOxfordUK
  3. 3.Chemistry DepartmentUniversity of SurreyGuildfordUK