Is fog harmful to the human body? How big is the impact?

Haze has become a very common gas floating in the air in our lives. Most haze is water vapor, dust and various particulate bacteria. It is a very common natural phenomenon. As more and more haze appears over major cities, haze is very harmful to the human body. Long-term exposure will have a great impact on the body.

Fog is a common natural phenomenon formed when the ground temperature drops and saturated water vapor condenses into small water droplets on condensation nuclei such as dust, particles, and bacteria. Fog occurs frequently in autumn and winter due to the inversion of surface radiation. When talking about fog, people will think of the harm it causes to traffic. Yes, there are many traffic accidents caused by heavy fog, and they are very serious. According to statistics from a certain place, as many as 40% of traffic accidents are caused by fog each year. However, the harm of fog to humans is far more than that.

First of all, fog has strong adsorption properties. When fog droplets drift at low altitude, they constantly collide with pollutants, which can cause pollutants to accumulate and greatly increase the harmful components of the fog. It has been determined that the content of acids, amines, phenols, heavy metal particles, dust and pathogens in fog droplets is dozens of times higher than that in normal atmosphere.

Second, the sulfur dioxide, hydrogen sulfide and other substances contained in the mist droplets are highly corrosive to metals, shortening the life of exposed metal objects. According to statistics, tens of millions of tons of steel are corroded by acid mist every year around the world.

Third, fog is also very harmful to agricultural operations. Harmful fog droplets adhere to crops, fruits and vegetables during their growth process, which will not only cause spots on the fruits and vegetables, but also promote the growth of mold. An article states that if certain crops encounter continuous fog during their flowering or growing season, the yield may be reduced by 10% to 30%.

Fourth, due to air pollution and changes in the properties of condensation nuclei that form fog, the harm of fog to the human body is becoming more and more serious. After people breathe polluted fog, the incidence of rhinitis, pharyngitis, bronchitis and lung cancer increases significantly.

In order to reduce the harm of fog to human beings, in addition to strengthening traffic control and enhancing safety awareness, the fundamental thing is to control air pollution, reduce the number of harmful condensation nuclei in the free atmosphere, and restore fog to its original appearance - clean.

Fog is very harmful. In addition to causing traffic accidents, flight delays, communication line interruptions and other accidents, the harm of air pollution caused by it to human health cannot be underestimated.

Haze is a kind of water vapor floating in the sky, which is composed of exhaust gas, various bacteria and dust discharged from factories. This water vapor not only affects traffic, but also affects safety. In particular, it can cause major chronic bronchial and asthma diseases in the lungs when you go out. Therefore, haze is very harmful to the body.