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Air mover provides force to create vacuum or lower pressure at the end of sampling systems. flow measurement device Inlet manifold transports sampled pollutants from ambient air to collection medium or analytical device in an unaltered condition.More than three stations can also be established depending upon the area of coverage.Ĭomponents of ambient air sampling systems.One station must be at upstream of predominant wind direction and other two must at downstream pre dominant wind direction.The location is dependent upon the wind rose diagram that gives predominant wind directions and speed.Gaseous pollutants: continuous monitoring.Monitoring data may be used for research purpose.Monitoring must be able to evaluate impacts of hazards due to accidental release of chemicals.Monitoring must be able to evaluate impacts of new/existing air pollution sources.The monitoring should be carried out with a purpose of compliance of air quality standards.The site is dependent upon the use/purpose of the results of the monitoring programs.The recommended criteria for siting the monitoring stations Pressure Source Ambient As per WHO ambient monitoring protocol SOx Essential NOx SPM HC CO Additional O3 Point SOX NOX CO PM Line CO NOx HC RPM Monitoring of Air pollutants Source monitoring instruments Stack sampler (APM 620): Parameters monitored are a. RSPM), carbon monoxide (CO), hydrocarbons (HC), sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3) and photochemical oxidants. SPM and respirable suspended particulate matter i.e. Most frequently occurring pollutants in an urban environment are particulate matters (suspended particulate matter i.e.Lecture-1 Ambient Air Pollution Monitoring Experimental analysis: gaseous and particulates standards and limits.Stack monitoring: techniques and instrumentation.Ambient air pollution monitoring: techniques and instrumentation monitoring stations.

Air pollution ppt by slide share download