Ambient Air Quality Monitoring in Chennai

Ambient Air Quality Monitoring in Chennai
Ambient Air Quality Monitoring in Chennai

What is ambient air quality?

Ambient air quality is defined as the quality of air outside and sometimes inside. Ambient air quality standards are limits to concentrations of pollutants in air stated for wellbeing of human, nature, animals, etc. There is no specified definition of standards but various organizations but they are not often similar.

Air Quality Monitoring

Air quality monitoring is a process used to determine existing quality of air, evaluate effectiveness of control programmers and to identify areas in need of restoration.

Pollutants such as Carbon Monoxide (CO), Particulate matter (PM 10 and PM 2.5), Volatile Organic Compounds (VOCs), Nitrous Oxide (NOX), sulphur dioxides (SO2) are monitored under the programmer of NAMP with the help of agencies like CPCB, SPCB, NEERI, etc. The monitoring is carried out for 24 hour duration with a frequency of twice a week.

Benefits of Air Quality Monitoring

Air quality is not same everywhere and it is different by geographic pattern and weather conditions along with sources of air pollution contributes towards the quality of air.

This is why different areas have different air quality levels at different time.

Example: Let’s consider two areas:

Area having low air exchange rate and less sources of air pollution

Area having high air exchange rate and less sources of air pollution

The first area will have a poor air quality than second area and why is that? This is because, the first area has low air exchange rate, which makes the pollutants to build up in that area and In second area, the air exchange rate is high which doesn’t allow the pollutants to build up in that particular area.

 Below are some Important Benefits of Air Quality Monitoring.

  1. The data collected from air quality monitoring helps us assess impacts caused by poor air quality on public health.
  2. Air quality data helps us determine if an area is meeting the air quality standards devised by CPCB, WHO or OSHA.
  3. The data collected from air quality monitoring would primarily help us identify polluted areas, the level of pollution and air quality level.
  4. Air quality monitoring would assist in determining if air pollution control programmes devised in a locality are working efficiently or not.
  5. Air quality data helps us understand the mortality rate of any location due to air pollution. We can also assess and compare the short term and long term diseases/disorders which are a result of air pollution.
  6. Based upon the data collected control measures can be devised for protection of environment and health of all living organisms.

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