Abstract
The development and utilization of solid electrolyte-based coulometric techniques for the investigation of different oxygen exchange processes of solids or liquids, oxygen or hydrogen permeability through membranes, and generation of gas flows with well-defined oxygen concentration is briefly reviewed. The method based on Faraday’s law may be used alternatively or additionally to thermogravimetry, gas chromatography, chemical analysis, spectroscopy, and X-ray or neutron diffractometry in a wide oxygen partial pressure region (10−20 to 105 Pa) unaffected by temperature. The detection limit of exchanged oxygen is determined by a current- and voltage-measuring technique and is now not lower than 50 ng for devices operating in carrier gas mode.
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