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Primary and second pollutants
Primary and second pollutants
Air pollutants are divided into two categories: primary pollutants and secondary pollutants. Primary pollutants come directly from sources like cars, factories, or fires. Second pollutants are formed in the air when primary pollutants react with sunlight or other chemicals.
The size of Particulate matter
The size of Particulate matter
It shows that the SARS-CoV-2 virus (60–140 nm) is much smaller than bacteria (~1 μm), PM2.5 particles (<2.5 μm), and red blood cells (~7 μm). PM10 particles (≤10 μm) are the largest among them. The image helps us understand how tiny viruses and fine dust particles are compared to things in our body.
When breathing, these air particulates can get inside your lungs, which is not good.
New Delhi
New Delhi
This is an article of countermeasure of air pollution in New Delhi.
New Dehli Article - Adapted for IM Chem.docxPage updated
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