Sentences with phrase «percent of airborne particles»
Humanscale's personal air purifier surrounds the user with air that's free of pollutants, dust and biological contaminants and removes more than 99 percent of airborne particles of all sizes.
https://www.treehugger.com/ Not exact matches
Even the briefest increase in airborne fine particulate matter PM2.5, pollution - causing particles that are about 3 percent of the diameter of human hair, is associated with the development of acute lower respiratory infection (ALRI) in young children, according to newly published research.
According to Beijing's environmental watchdog, vehicle emissions in Beijing were responsible for about 31 percent of the hazardous airborne particles known as PM 2.5, with 22.4 percent originating from coal burning.