Causes of haze weather

First: it’s car exhaust. Large vehicles using diesel are heavy offenders of PM10 emissions, including large buses, shuttle buses of various units, and large transport trucks. Sources of toxic particulate matter in cities: First, car exhaust. Cars using diesel are heavy offenders in emitting fine particulate matter. Although small cars using gasoline emit gaseous pollutants, such as nitrogen oxides, they can easily be converted into secondary particulate pollutants in foggy weather, aggravating smog. Motor vehicle exhaust is the main component of smog particles.

Second: the waste gas produced by burning coal for heating in winter in the north.

Third: emissions from industrial production Exhaust gas. For example, metallurgy, kilns and boilers, mechanical and electrical manufacturing, as well as a large number of exhaust gases emitted from the combustion of kilns for auto repair painting and building materials production.

Fourth: Dust generated by construction sites and road traffic.

Fifth: The particle size of growable particles, bacteria and viruses is equivalent to PM0.1-PM2.5. When the humidity and temperature in the air are suitable, microorganisms will adhere to the particles, especially oil smoke. On particulate matter, microorganisms absorb oil droplets and transform into more microorganisms, causing the growth of biological toxic substances in the haze to increase.

Sixth, dust haze will also be produced during home decoration. The dust in the room is not only harmful to the health of workers and users, but also increases the burden of cleaning. When the dust is serious, it will also bring many hidden dangers to the decoration project.