According to Central Pollution Control Board (CPCB) bulletins, ozone was identified as a prominent pollutant on recent days in Delhi.
About Ozone pollution:
- Ozone (O3) high in the Earth's atmosphere protects us from the sun's harmful radiation. But ozone at ground level (tropospheric ozone), is an air pollutant that harms people and plants.
- Ground-level ozone is a colorless and highly irritating gas that forms just above the earth's surface.
- How ground level ozone is formed?
- It is called a "secondary" pollutant because it is produced when two primary pollutants react in sunlight and stagnant air.
- These two primary pollutants are nitrogen oxides (NOx) and volatile organic compounds (VOCs).
- These precusrsor primary pollutants are each produced primarily by a variety of human activities, including burning of fossil fuels and various industrial processes. Certain types of volatile organic compounds can also be emitted from natural sources.
- Ground-level ozone is known to have significant effects on human health. Exposure to ozone has been linked to pre-mature mortality and a range of morbidity health issues.
- It can significantly impact vegetation and decrease the productivity of some crops.
- It can also damage synthetic materials, cause cracks in rubber, accelerate fading of dyes, and speed deterioration of some paints and coatings.