How great is the harm of smog? Have you paid attention to it?portable air purifier Processing

　　Haze is a combination of fog and haze. Smog is common in cities. Many regions in China combine fog and haze together as a disaster weather phenomenon for early warning and forecasting, collectively referred to as "smog and haze weather." Smog is the result of the interaction between specific climatic conditions and human activities. The economic and social activities of a high-density population will inevitably emit a large amount of fine particulate matter (PM 2.5). Once the emission exceeds the atmospheric circulation capacity and carrying capacity, the concentration of fine particulate matter will continue to accumulate. The range of smog. Next, air purifier manufacturers will talk about the hazards of smog.

　　The hazards of smog: damage to blood vessels

　　There are many pollutants in the air and low air pressure during haze days, which can easily induce acute attacks of cardiovascular diseases. When the fog is heavy, the water vapor content is very high, and people are not easy to excrete sweat during outdoor activities and exercises, which causes people's chest tightness and increased blood pressure. Moreover, in dense fog, the pressure is relatively low, and people will have a feeling of irritability, and blood pressure will naturally increase. In addition, the temperature is often low in foggy days. Some patients with relatively high blood pressure and unsound heart function suddenly walk from a warm indoor to a cold outdoor. The blood vessels expand and contract with heat, which can also increase blood pressure, leading to stroke and myocardial infarction. happen.

　　The hazards of smog: heart injury

　　The Harvard School of Public Health has proved that particulate pollutants in a hazy sky can not only cause myocardial infarction, but also cause myocardial ischemia or damage. The United States surveyed 25,000 people with heart disease or poor heart conditions and found that an increase in PM2.5 by 10 micrograms/cubic meter would increase the mortality rate of patients by 10% to 27%.

　　The hazards of smog: injury to the lungs

　　Smoggy weather has a great impact on the respiratory system, which has become the consensus of most people. The respiratory system has the most frequent contact with the external environment, and the contact area is large. Hundreds of atmospheric particles can directly enter and adhere to the upper and lower respiratory tracts and lung lobes of the human body, and most of them will be inhaled by the human body. Secondly, the haze weather causes the near-surface ultraviolet light to weaken, which is likely to increase the activity of pathogens in the air. Fine particles will "carry" bacteria and viruses to the depths of the respiratory system and cause infection.

　　The hazards of smog: brain damage

　　The smog not only harms organs, but also affects the nervous system invisibly. The 65th Annual American Society of Geriatrics will have a conclusion that if PM2.5 in the air increases by 10 micrograms/cubic meter, human brain function will age for 3 years.

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