Which of the following types of gas analyzers can be used for breath-by-breath measurements of CO₂? A) Infrared B) Polarographic C) Zirconium fuel cell D) Thermal conductivity

Question

Quizplus · Accepted Answer

Infrared gas analyzers are capable of measuring breath-by-breath concentrations of gases such as CO2, O2, and N2O, and can also detect trace gases such as COS. Therefore, it can be used for breath-by-breath measurements of COS as well. Polarographic analyzers are mainly used for measuring the concentration of gases such as oxygen and carbon monoxide. Zirconium fuel cell analyzers are commonly used for measuring the concentration of oxygen in exhaust gases of combustion engines. Thermal conductivity analyzers are mainly used for measuring the concentration of binary gas mixtures such as hydrogen/nitrogen or helium/argon.

Which of the Following Types of Gas Analyzers Can Be