Radial electrochemical flow cell for on-line coupling with mass spectrometry: Theory and electrooxidation of dimethylaminomethyl ferrocene

Alexander D. Modestov, Jenny Gun, Andrei Mudrov, Ovadia Lev*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A new, radial, miniature, three-electrode flow cell is introduced. The cell is configuration is most suitable for on-line electrochemistry - mass spectrometry since it is characterized by low resistive losses, high conversion efficiency, and isolation of the counter electrode reaction by-products from the product stream reaching the MS. A mathematical model describing convection diffusion in the radial cell is developed. Cell's performance can be predicted over a wide parametric range by a simple mathematical expression which converges to the Levich equation under low conversion conditions. The performance of the cell is demonstrated by studies of dimethylaminomethyl ferrocene (DMAMF) oxidation which is a simple single electron charge transfer reaction and allows validation of the mathematical model. The theoretical predictions of the model were in agreement with the results of on-line electrochemistry - mass spectrometry studies of DMAMF.

Original languageAmerican English
Pages (from-to)367-378
Number of pages12
JournalElectroanalysis
Volume16
Issue number5
DOIs
StatePublished - Mar 2004

Keywords

  • Boundary value problem
  • Channel electrode
  • Dimethylaminomethyl ferrocene
  • EC/MS
  • ESI-MS
  • Eigenvalue problem
  • Electrochemistry
  • Flow cell
  • MS

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