why 2.5 micrometer and 2.5PM are equal here
According to CPCB (Central pollution control board) particulate matter of size less than 2.5 micro meter (PM 2.5) are very harmful for human health.
Dear student.
PM stands for Particulate matter, these are microscopic fine particles of about 10 micrometers in diameter or smaller.They are made up of number of components including acids of nitrates and sulphates, metals, soil or dust particles. These are so small that they can get deep into the lungs and can cause serious health issues. They are also referred as Particle pollution or PM.
PM 2.5 are those particulate matters which are 2.5 micrometers or less in diameter.
Regards.
PM stands for Particulate matter, these are microscopic fine particles of about 10 micrometers in diameter or smaller.They are made up of number of components including acids of nitrates and sulphates, metals, soil or dust particles. These are so small that they can get deep into the lungs and can cause serious health issues. They are also referred as Particle pollution or PM.
PM 2.5 are those particulate matters which are 2.5 micrometers or less in diameter.
Regards.