The PCO₂ Electrode in a Blood Gas Analyzer Uses Which

Question

The PCO2electrode in a blood gas analyzer uses which of the following principles?
A) A pH electrode in a bicarbonate electrolyte
B) A platinum cathode in a phosphate buffer
C) Luminescence quenching
D) Optical absorption at two wavelengths

Accepted Answer

The PCO₂ electrode in a blood gas analyzer uses a pH electrode in a bicarbonate electrolyte to measure the partial pressure of carbon dioxide (PCO2) in blood. This method is based on the principle that the amount of CO2 in the blood changes the pH of the bicarbonate electrolyte, which can be measured by the pH electrode.

The PCO2 electrode in a blood gas analyzer uses which of the following principles?

The PCO₂ electrode in a blood gas analyzer uses which of the following principles?