A person works in a silicon manufacturing industry for the past 20 years. Since a few years he has started feeling quite breathless and has cough all the time. His doctor says that this is because of

Question

A person works in a silicon manufacturing industry for the past 20 years. Since a few years he has started feeling quite breathless and has cough all the time. His doctor says that this is because of his occupation as he is exposed constantly to silica dust. What must have been the size of the particles to cause such an issue?

TestHub · Accepted Answer

As stated by Central Pollution Control Board (CPCB), particulate size 2.5 micrometers or less in diameter (PM 2.5) cause greatest injury to health of humans. These particles when inhaled cause multiple respiratory problems such as breathing problems, inflammation and irritation, damage to the lungs resulting in premature deaths. Particulates of such a small size cannot be removed by electrostatic precipitator also.

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