Indoor air
pollution
Monitoring of air pollution
* The best indicators of air pollution are sulphur dioxide, smoke and suspended particies.
a. Sulphur dioxide:
b. Smoke or soiling index:(1992-JIP***).
* A known volume of air is filtered through a white filter paper.
* Smoke concetration is estimated and expressed as micrograms/cubic metre of air.
c. Grit and dust measurement.
d. Coefficient of haze.
e. Air pollution index.
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