PM2.5: Invisible Killer

PM2.5: Invisible Killer

We can all appreciation what pollution is and specifically pollution that´s in the air refered to as particle pollution. Particle pollution is also known as “Particulate Matter” or simply PM. While the term PM is simple, PM itself is a relatively complex mixture with extremly small particles and liquid droplets that float around in the air.

There are two kinds of particle pollution, fine particles and inhalable coarse particles. Fine particles are called PM2.5, because their size is 2.5 micrometers in diameter and smaller.

Inhalable coarse particles are called PM10, because their seize ranges from 10 micrometers down to larger than 2.5 micrometers.

– See more at: http://english.cntv.cn/special/pm25/Homepage/index.shtml

 

 

 

 

 

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