Continuous Monitoring

Continuous monitoring equipment will provide nearly instantaneous measurements of ambient concentrations for several pollutants. Continuous sampling involves drawing air through a commercial analyzer calibrated to produce an output that is proportional to the ambient pollutant concentration. This gives the greatest resolution but is costly, due largely to the capital and operating costs involved. Data from continuous monitoring is stored in one-hour average time blocks.

Air pollutants monitored on a continuous basis include:

carbon monoxide (CO)
oxides of nitrogen (NO₂, NO and NO_x)
ozone (O₃)
sulphur dioxide (SO₂)
hydrogen sulphide (H₂S) and total reduced sulphur (TRS)
particulate matter (PM_2.5 and PM₁₀)
dust and smoke (COH)
hydrocarbons (THC, NMHC and CH₄)
ammonia (NH₃)
carbon dioxide (CO₂)

	Continuous Monitoring Continuous monitoring equipment will provide nearly instantaneous measurements of ambient concentrations for several pollutants. Continuous sampling involves drawing air through a commercial analyzer calibrated to produce an output that is proportional to the ambient pollutant concentration. This gives the greatest resolution but is costly, due largely to the capital and operating costs involved. Data from continuous monitoring is stored in one-hour average time blocks. Air pollutants monitored on a continuous basis include: carbon monoxide (CO) oxides of nitrogen (NO₂, NO and NO_x) ozone (O₃) sulphur dioxide (SO₂) hydrogen sulphide (H₂S) and total reduced sulphur (TRS) particulate matter (PM_2.5 and PM₁₀) dust and smoke (COH) hydrocarbons (THC, NMHC and CH₄) ammonia (NH₃) carbon dioxide (CO₂)