OXYGEN PARTIAL-PRESSURE MEASUREMENTS UNDER MORE DEMANDING CONDITIONS

Recent progress in oxygen gas sensors based on the EMF method is revie wed. This includes: (a) a multichannel oxygen analyzer; (b) the use of this sensor in the medical field for energy expenditure determination ; (c) the effect of temperature gradients in the presence of reactive gases on the relevance of the reading of oxygen-pressure sensors; (d) doubly protected electrochemical cell for accurate, lengthy, coulometr ic titration, EMF and thermodynamic measurements; and (e) potentiometr ic sensors based on mixed ionic electronic conductors.