What is PM2.5 fine dust? Harm and ways to prevent fine dust PM2.5
1 What is PM2.5 fine dust? Dust is a mixture of solid or liquid compounds floating in the air, the compounds in dust are also known collectively as Particulate Matter – PM symbol. In which, dust particles with microscopic size ( micron ) are best known such as: PM10: Fine dust with a diameter of 2.5 to 10 microns the size of a millionth of a meter. PM2.5: Fine dust less than 2.5 microns in diameter. PM1.0: Ultra-fine dust with a size of 1 micron. PM0.1 nano dust: Ultra-fine dust less than 0.1 micron in size. PM2.5 fine dust is tiny dust particles present in the air with a size of 2.5 microns or less (it's about 30 times smaller than a human hair). The symbolic size of some types of dust compared to a human hair and a grain of sand. 2 Causes of PM 2.5 . dust PM2.5 fine dust appearing in the air originates from natural causes and man-made causes. Natural causes Wildfires : Large wildfires worldwide are largely caused by abrupt climate change. Su...