Source: India Today by Baishali Adak
As temperatures rise, ozone levels are steadily going up in Delhi. A dangerous gas, also called sunburn for the lungs, it is formed when NOx (nitrogen oxides) and VOCs (volatile organic compounds) emitted by industries and vehicles react with sunlight under high temperature. It is so toxic, it is measured on an hourly basis instead of 24-hourly basis, as even minute quantities act like sandpaper on the inside of the lungs and lead to asthma attacks, say experts.
This week, the Central Pollution Control Boards (CPCB) National Air Quality Index (NAQI) recorded Ozone as the primary pollutant in Delhi on three days May 4th, 2nd and 1st. This is when, generally, only PM (Particulate Matter) 10 and PM 2.5 emerge as the primary pollutants in the national Capital on most days, besides Nox and CO (Carbon Monoxide) rarely.
Experts like Anumita Roychowdhury, head of Clean Air Campaign at think tank CSE, say, The problem will only get worse as summer progresses if corrective steps are not taken soon.”
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