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Jun 03, 2014 · Surgical face mask and plain face mask are designed for preventing and avoiding spillage droplets spread and large particulate materials usually hundred micrometer large. But they are not of any use in preventing inhalation of fine articles like PM2.5. N95 and R95 face mask is a kind of ambient air pollution for 2012. Cited 2015 Oct 31.
Jun 10, 2018 · Atmospheric particulate matter of less than 2.5 micrometers in diameter (PM2.5), nitrogen oxides, nitrogen dioxide (NO 2), ozone, sulfur dioxide (SO 2), carbon dioxide (CO 2), acidic aerosols, formaldehyde, fuel fumes, paints, chemicals (such as volatile organic compounds and chlorine), and biological contaminants (such as endotoxins), when inhaled into the airways, may trigger or aggravate
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