Physics:Severinghaus electrode
From HandWiki
The Severinghaus electrode is an electrode that measures carbon dioxide (CO2). It was developed by Dr. John W. Severinghaus and his technician A. Freeman Bradley in 1958.[1]
It utilizes a CO2-sensitive glass electrode in a surrounding film of bicarbonate solution covered by a thin plastic carbon dioxide permeable membrane, but impermeable to water and electrolytic solutes. The carbon dioxide pressure of a sample gas or liquid equilibrates through the membrane and the glass electrode measures the resulting pH of the bicarbonate solution.
Clark, galvanic, and paramagnetic electrodes measure oxygen. Severinghaus electrode measures CO
2. Sanz electrode measures pH.[2]
References
- ↑ Severinghaus, John W.; Bradley, A. Freeman (1958). "Electrodes for Blood pO2 and pCO2 Determination". Journal of Applied Physiology (American Physiological Society) 13 (3): 515–520. doi:10.1152/jappl.1958.13.3.515. ISSN 8750-7587.
- ↑ McFadyen, J.G (1 December 2008). "Respiratory Gas Analysis" (pdf). World Federation of Societies of Anaesthesiologists. http://update.anaesthesiologists.org/wp-content/uploads/2008/12/Respiratory-Gas-Analysis.pdf.
External links
- Editorial, Anaesthesia UK (3 April 2006). "Anaesthesia UK : Measurement of pO2, pCO2, pH, pulse oximetry and capnography". https://www.frca.co.uk/article.aspx?articleid=100389.
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