What are the specific components of smog?

Haze is composed of dust, sulfuric acid, nitric acid, organic hydrocarbons and other particles in the air.

smog is mainly composed of sulfur dioxide, nitrogen oxides and inhalable particulate matter. The first two are gaseous pollutants, and the last particulate matter is the main reason for aggravating smog weather pollution. Together with fog, they make the sky gloomy and gloomy instantly.

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.

Extended information:

There are various sources of smog, such as automobile exhaust, industrial emissions, building dust, garbage incineration, and even volcanic eruption. Smog weather is usually formed by the mixed action of various pollution sources. However, in the smog weather in different regions, the role of different pollution sources is different.

Smoggy weather has existed since ancient times, and human activities or natural phenomena such as slash-and-burn and volcanic eruption may lead to foggy weather. However, after human beings entered the era of fossil fuels, the smog weather really threatened the living environment and health of human beings.

Rapid industrialization and urbanization lead to rapid energy consumption, high population concentration and ecological environment destruction, all of which set the stage for the formation of haze weather.