A complete picture of handwritten newspaper content about smog

Haze handwritten newspaper information:

Components

Haze is composed of dust, sulfuric acid, nitric acid, organic hydrocarbons and other particles in the air. It can also make the atmosphere turbid, blur the visual field and worsen the visibility. If the horizontal visibility is less than 1,m, the visual range obstacle caused by this non-aquatic aerosol system is called Haze or Dust-Haze, and the Hong Kong Observatory calls it haze.

sulfur dioxide, nitrogen oxides and inhalable particulate matter are the main components of smog, the first two are gaseous pollutants, and the last particulate matter is the culprit that aggravates smog weather pollution. They combine with the fog to make the sky gray in an instant. The abbreviation of particulate matter is PM, and PM2.5 is monitored in Beijing, that is, pollutant particles with aerodynamic equivalent diameter less than or equal to 2.5 microns.

smog is mainly composed of sulfur dioxide, nitrogen oxides and inhalable particles, which combine with fog to make the sky gloomy and gloomy instantly. The abbreviation of particulate matter is PM, and Beijing monitors fine particulate matter (PM2.5), that is, pollutant particles with aerodynamic equivalent diameter less than or equal to 2.5 microns. This particle itself is not only a pollutant, but also a carrier of toxic substances such as heavy metals and polycyclic aromatic hydrocarbons.

The distribution of haze particles is relatively uniform, and the scale of haze particles is relatively small, ranging from .1 micron to 1 microns, with an average diameter of about 1-2 microns. No floating particles can be seen by naked eyes. Due to the haze composed of dust, sulfuric acid, nitric acid and other particles, the light ratio with longer scattering wavelength is more, so the haze looks yellow or orange-gray.