Recent Developments in Electrochemical Solid Polymer Electrolyte Sensor Cells for Measuring Carbon Monoxide and Oxides of Nitrogen
1981; American Chemical Society; Linguagem: Inglês
10.1021/bk-1981-0149.ch035
ISSN1947-5918
AutoresAmedeo Conti, Mélanie Nolan, J. Kosek, J. M. SEDLAK,
Tópico(s)Analytical Chemistry and Sensors
ResumoElectrochemical gas detection instruments have been developed which use a hydrated solid polymer electrolyte sensor cell to measure the concentration of specific gases, such as CO, in ambient air. These instruments are a spin-off of GE aerospace fuel cell technology. Since no liquid electrolyte is used, time-related problems associated with liquid electrolytes such as corrosion or containment are avoided. This paper describes the technical characteristics of the hydrated SPE cell as well as recent developments made to further improve the performance and extend the scope of applications. These recent advances include development of NO and NO2 sensor cells, and cells in which the air sample is transported by diffusion rather than a pump mechanism. The intended use of the SPE detectors is by military, government and industrial personnel involved in air quality measurements. The commercial SPE CO dosimeter and direct-reading detection instruments are being widely used by steel mills, fire
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