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Severinghaus electrode : ウィキペディア英語版 | Severinghaus electrode
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.〔SEVERINGHAUS, J. W. & BRADLEY, A. F. 1958. Electrodes for Blood pO2 and pCO2 Determination. Journal of Applied Physiology, 13, 515-520.〕 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. ==References==
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