CO2-sensitive potentiometric sensor

The CO2 sensitive potentiometric gas sensors with CO2 permeable membra,ne are of great interest in medicine, in the control of CO2 content of blood or tissues. The functional characteristics of the sensors depend on: the nature and permeability of the membrane; the concentration of the specific internal filling solution; the measurement methodology. The paper presents the results obtained in establishing the optimum parameters for the good functioning of a homemade potentiometric CO2 sensitive gas sensors, with PTFE as CO2 premeable membrane. The electrodic function and the functional characteristics of the sensor are also presented.