Nowadays, “Air pollution” is the problem everyone should know about but do you correctly understand the issues?

What is Air Pollution?

Air pollutants are classified into two types: dust and gas.

Gaseous forms are polluting compounds and substances such as SO2, CO2, ground ozone (O3), NOx…

Water-soluble compounds such as SO2 and CO2, when absorbed into the human body dissolve into the respiratory mucous glands (saliva and nasal) and cause inflammation or irritation. However, if the compounds are absorbed with dust, then go into the human body, they will be able to penetrate deeply into the lower respiratory and turn into a variety of dangerous diseases. Meanwhile, the less soluble inert gases (Ozone, NOx) easily enter the lower respiratory through breathing.

Dust is classified into 3 types: coarse dust, fine dust, and extremely fine dust.

Coarse dust, which is in the size of 10 – 2.5 micrometers, is considered to be the least impacting on human health and derives mainly from road dust, water dust etc

Fine dust: smaller than 2.5 micrometers, derived from combustion, including nitrate, sulfate, carbon atoms, heavy metals, soot. Highly spread in the air (up to 1000km)

Extremely fine dust is mainly derived from vehicles with diesel engines. The concentration is proportional to the distance of the emission source. Here is a diagram of the impact of air pollution on human health. Besides, asthma and chronic obstructive pulmonary are 2 common symptoms of the impact of air pollution on humans.

The impact of air pollution

Map of the effects of air pollution on human health

Children are vulnerable victims because their lungs are in the development stage. As a result, lung function and volume will be badly damaged by pollution. Moreover, Prolonged exposure increases the risk of lung cancer. Because of the severe effects on the human body as mentioned above such as asthma, pneumonia and deadly lung cancer paying more attention to air quality is essential.

All of us have to act together to change from the smallest behavior up, to keep “clean air and blue sky” for us all to breathe and enjoy.

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