Do you want to be ozone bacteria in summer high temperature?There is no such bacteria at all

Recently, the Shanghai rumor platform received a lot of messages in the background, hoping to verify the authenticity of the "ozone bacteria", because there are rumors: "This summer, the temperature in all parts of the country is extremely sultry and the air index ozone bacterial infection has intensified. Ozone infection will cause a variety of diseases. Breaking, heart disease, heat stroke, respiratory disease, etc. In order to prevent ozone infection, high temperature weather is not easy to go out, do not open doors and windows between 9 am to 5 pm, because the ozone bacterial virus will be introduced indoors with the air during this period , Also infected the crowd. Especially from 10 am to 3 pm, I will be resolutely going out. "

The rumor also stated that the above content was reported from "News Broadcast".

The Shanghai rumor platform verification found that the "ozone bacteria" called "ozone bacteria" did not exist and belonged to raw words. In the recent news network, there is no content related to "ozone bacteria". Judging from the overall expressions of rumors, the sentences are not smooth, and there are many typos, which can be judged as rumors.

However, some people have proposed that there are no "ozone bacteria", but "ozone pollution" will be mentioned in the weather forecast. What is going on? Will continuous high temperature in summer produce ozone pollution? Do people need preventive measures?

In response, Dr. Rui, the chief service officer of the Shanghai Meteorological Bureau, explained that ozone (O₃) is a kind of homogenic alien in oxygen (O₂), which is tasteless at low concentration. For ozone, people may be more familiar with ozone layers 20 kilometers to 25 kilometers from the ground. It can absorb most of the ultraviolet rays in the sun and prevent the expansion of the ozone in the atmosphere is an important measure to protect human health. But once it enters the ground, ozone will soon change from "Earth Guardians" to "healthy killer."

According to the "Environmental Air Quality Standards" released by my country, the average of the ozone concentration of maximum 8 hours exceeds 160 micrograms per cubic meter, and ozone pollution is formed; if it exceeds 215 micrograms per cubic meter, it will reach moderate pollution.

Different from PM2.5, ozone pollution does not come from direct pollution source emissions. The generation is mainly related to two types of pollutants -volatile organic matter (VOCS) and nitrogen oxides. These two types of substances can accelerate the occurrence of photochemical reactions under high temperature and strong sunlight. In the afternoon of May to September, the higher the temperature, the longer the light time, the more fully the response, and the higher the ozone concentration. Wu Rui said that the car tail gas generates ozone in the optical response, and is the most common source of pollution in the city.

The strong oxidation of ozone itself can stimulate human cardiovascular and mucosal tissue. Stimulate the respiratory tract to cough and inflammation; stimulate the symptoms such as redness, itching, and tears in the eyes; make people headache, chest tightness, fatigue and harmful effect on nerve behavior function; it will also increase allergies and asthma symptoms.

Wu Rui suggested that the best way to avoid ozone pollution is to stay away from the densely traversed areas such as the roads and the viaduct. Chai Fahe, chief scientist in the atmospheric environment of the Chinese Academy of Environmental Sciences, suggested that some sensitive people, such as elderly people and children, especially those with respiratory diseases such as asthma. Reduce outdoor activities.

As for the rumor, the practice of "do not open the doors and windows between 9 am and 5 pm", there is no scientific basis for preventing ozone pollution, because ozone can still maintain a higher level of concentration at night. The Internet passed on the Internet "I can't go out at 10 am to 3 pm" and "wear masks" and other methods. In fact, measures to prevent direct skin from ultraviolet rays, as well as measures to block pathogens such as bacteria and viruses. Granules are gas.

Wu Rui said that if citizens care about oxygen concentration, they can query through the official website, official Weibo and official WeChat public account of the Shanghai Ecological Environment Bureau and the Shanghai Meteorological Bureau. The Shanghai Ecological Environment Bureau and the Municipal Meteorological Bureau monitor pollutants including ozone every day and release them through the above platforms.

For example, on the afternoon of July 8th,@比 比 比 比 比 比: "Shanghai Air Pollution reminder: July 9-11 is high in temperature, strong light, and it is expected to be mild pollution."

Source: Shanghai Network Rumor

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