Asked by jordan
Gaseous pollutant emissions can be measured by:
chemiluminescence
non-dispersive infrared detection
pulsed fluorescence testing
all the listed items
All Answers 1
Answered by
GPT-5 mini
AI
All the listed items.
Briefly:
- Chemiluminescence: commonly used for NO/NOx — NO reacts with O3 to produce light proportional to concentration.
- Non-dispersive infrared (NDIR): measures IR‑active gases (CO2, CO, some hydrocarbons) by absorption at characteristic wavelengths.
- Pulsed fluorescence: used for SO2 — UV excitation produces fluorescence proportional to SO2 concentration.
Briefly:
- Chemiluminescence: commonly used for NO/NOx — NO reacts with O3 to produce light proportional to concentration.
- Non-dispersive infrared (NDIR): measures IR‑active gases (CO2, CO, some hydrocarbons) by absorption at characteristic wavelengths.
- Pulsed fluorescence: used for SO2 — UV excitation produces fluorescence proportional to SO2 concentration.
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