Air Gap Microcell for Scanning Electrochemical Microscopic Imaging of Carbon Dioxide Output. Model Calculation and Gas Phase SECM Measurements for Estimation of Carbon Dioxide Producing Activity of Microbial Sources

András Kiss, Laszló Kiss, Barna Kovács, Géza Nagy

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Most of SECM studies have been carried out in liquid or gel phases. A Severinghaus type, CO2 detecting potentiometric tip has been fabricated and used in gas phase SECM studies. The microcell tip is made without gas permeable membrane. Faster response, needed in SECM, was achieved by substituting the membrane with an air gap. The carbon dioxide concentration profile in the gas phase over a disc-shaped colony of yeast has been detected with the new tip. Estimation of the carbon dioxide output of the fungi colony was attempted by fitting simulated curves to measured ones obtained with one dimensional (line) scans.

Original languageEnglish
Pages (from-to)2320-2326
Number of pages7
JournalElectroanalysis
Volume23
Issue number10
DOIs
Publication statusPublished - Oct 1 2011

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Keywords

  • Air gap antimony electrode
  • Carbon dioxide
  • Finite element method
  • SECM
  • Saccharomyces cervisiae

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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