Determination of the diffusion coefficient of monosaccharides with scanning electrochemical microscopy (SECM)

Livia Nagy, Gergely Gyetvai, Geza Nagy

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The principle of a simple time of flight (TOF) diffusion coefficient measuring method is presented. It is based on the special capability of Scanning Electrochemical Microscopy (SECM). Its applicability has been investigated experimentally in comparison with conventional electrochemical methods. Complex irreversible electrode processes usually bring in uncertainty into electrochemical diffusion coefficient measurements. One of these, the electrochemical oxidation of saccharides in basic media at a copper electrode, was selected for the studies. Microsize copper electrodes used also as SECM tip, and conventional size copper electrodes were used. Diffusion coefficients of d-glucose, d-arabinose, d-ribose, and d-galactose were measured. The results prove the advantages of the SECM-TOF method in the case investigated.

Original languageEnglish
Pages (from-to)542-549
Number of pages8
JournalElectroanalysis
Volume21
Issue number3-5
DOIs
Publication statusPublished - Feb 1 2009

Keywords

  • Copper electrode
  • Diffusion coefficient
  • Electrochemical time of flight method (ETOF)
  • Monosaccharides
  • Scanning electrochemical microscopy (SECM)

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

Fingerprint Dive into the research topics of 'Determination of the diffusion coefficient of monosaccharides with scanning electrochemical microscopy (SECM)'. Together they form a unique fingerprint.

  • Cite this