Abstract
A miniature pCO2 electrode for possible CO2 measurement in a biological system was constructed and evaluated. The pCO2 electrode employed a miniature pH glass electrode and the Severinghaus configuration. The electrode was evaluated in both gas and liquid phases. A good linear relation existed between the measured electrode potential of the pCO2 electrode and the logarithm of the CO2 concentration at 20°C in both gas and liquid phases. The temperature dependence of the electrode over the temperature range of 20-60°C was evaluated. From 20 to 40°C, a change of CO2 of 0·15%/°C at a CO2 level of 9·6 mole% was observed. The response time, pCO2 and temperature-hysteresis effects, and long-term stability of the pCO2 electrode were also investigated and discussed.
Original language | English |
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Pages (from-to) | 876-882 |
Number of pages | 7 |
Journal | Medical & Biological Engineering |
Volume | 13 |
Issue number | 6 |
DOIs | |
State | Published - Nov 1975 |
Keywords
- In vitro evaluation
- pCO electrode