Gas analysis

Classifications of methods of gas analysis

Continuous

• Mass spectrometry
• Raman scattering
• Infrared absorption
• IR photoacoustic spectroscopy
• Ultraviolet absorption
• Paramagnetic analysis
• Fuel cell
• Piezoelectric crystal resonance

Intermittent

• Gas chromatography
• Haldane apparatus
• Refractometer

Oxygen measurement

O2 specific

• Polarographic analysis (include Clark electrode)
• Fuel cell
• Paramagnetic analysis

Generic technique

• Gas chromatography
• Mass spectrometry
• Raman scattering

Infrared analyzer does NOT detect oxygen.

For blood gas only

• Lex-O2-Con
• Lloyd-Haldane apparatus
• van Slyke apparatus
• indirect method (by calculation using Hb, pO2, SatO2)

CO2 measurement

• CO2 electrode (main)
• Infrared analyser (main)
• Gas chromatography
• Mass spectrometry
• Raman scattering
• Chemical analysis

Volatile agent measurement

• Infrared absorption
• Gas chromatography
• Mass spectrometry
• Raman scattering
• Piezoelectric crystal resonance
• Photoacoustic analysis