A novel miniaturized sensor for carbon dioxide dissolved in liquids

In this paper, we report on a thin film sensor for the detection of carbon dioxide dissolved in liquids with the attention focused on its use for clinical blood gas analysis. Carbon dioxide from the analyte penetrates into a hydrogel electrolyte through a gas permeable membrane and is chemisorbed on...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2001-08, Vol.78 (1), p.291-297
Main Authors: Fasching, R., Keplinger, F., Hanreich, G., Jobst, G., Urban, G., Kohl, F., Chabicovsky, R.
Format: Article
Language:English
Subjects:
Amperometric measurement
Blood
Carbon dioxide
Chemisorption
Chemisorption on rhodium
Electrodes
Electrolytes
Gas permeable membranes
Hydrogels
Inverse voltammetry
Microsensors
Miniaturized CO 2 sensor
Rhodium
Thin film devices
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Summary:In this paper, we report on a thin film sensor for the detection of carbon dioxide dissolved in liquids with the attention focused on its use for clinical blood gas analysis. Carbon dioxide from the analyte penetrates into a hydrogel electrolyte through a gas permeable membrane and is chemisorbed on a rhodium working electrode. The concentration of CO 2 collected by this way is determined by an amperometric measurement technique based on the inverse voltammetry.
ISSN:0925-4005
1873-3077
DOI:10.1016/S0925-4005(01)00828-0