Detection of Intermediates and Products of Electrochemical Processes-a DEMS Study

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Authors

DRBÁLKOVÁ Eva JANDERKA Pavel

Year of publication 2001
Type Article in Periodical
Magazine / Source Analytical Sciences
MU Faculty or unit

Faculty of Science

Citation
Field Electrochemistry
Keywords electrochemistry cyclic voltammetry mass spectrometry DEMS electro-oxidation electrosorption electro-reduction
Description This paper describes an on-line connection of electrochemical cell and mass spectrometer used for detection, identification and observation in time of volatile and semivolatile species during electrochemical polarisation of working electrode (DEMS - Differential Electrochemical Mass Spectrometry). DEMS is a type of experimental technique, which makes possible an investigation of electrosorption, electro-oxidation and electro-hydrogenation processes of molecules like aromatic hydrocarbons, some other small organic molecules and reaction intermediates. The experimental set-up consists of a mass spectrometer connected with an electrochemical cell separated by hydrophobic membrane.
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