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What is PM 2.5 and PM 10?

//What is PM 2.5 and PM 10?

What is PM 2.5 and PM 10?

Particulate Matter (PM)

According to the Airnow.gov website, https://airnow.gov/index.cfm?action=aqibasics.particle:

Particle pollution, also called particulate matter or PM, is a mixture of solids and liquid droplets floating in the air. Some particles are released directly from a specific source, while others form in complicated chemical reactions in the atmosphere.

Particles come in a wide range of sizes. Particles less than or equal to 10 micrometers in diameter are so small that they can get into the lungs, potentially causing serious health problems. Ten micrometers is less than the width of a single human hair.

Coarse dust particles (PM10) are 2.5 to 10 micrometers in diameter. Sources include crushing or grinding operations and dust stirred up by vehicles on roads.

Fine particles (PM2.5) are 2.5 micrometers in diameter or smaller, and can only be seen with an electron microscope. Fine particles are produced from all types of combustion, including motor vehicles, power plants, residential wood burning, forest fires, agricultural burning, and some industrial processes. These particles can get deep into the lungs and cause serious health problems.

Relative Size of Particulate Matter

By | 2018-05-19T05:05:49+00:00 May 6th, 2018|Air Quality Index|0 Comments

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