From October 30 to November 1, the first Global Conference on Air Pollution and Health was held at the headquarters of the World Health Organization in Geneva, Switzerland.
The meeting pointed out that air pollution in most cities exceeds the air quality level recommended by the World Health Organization, and household air pollution is the main killer of rural and poor families. Every year, about 7 million people worldwide die from air pollution, which is also one of the causes of premature death. One third of all deaths caused by stroke, lung cancer and heart disease are caused by air pollution.
Before the conference, the World Health Organization issued a research report on “Air Pollution and Child Health: Clean Air is a Good Policy”. Data shows that 93% of children under 15 are exposed to air with PM2.5 concentrations that exceed the WHO regulations.
Excessive PM2.5 has aroused everyone’s attention to air pollution. The word smog has taken root in our minds since then. Everyone started buying air purifiers frantically, hoping to at least ensure that the indoor air is pollution-free. Although the current market sales of air purifiers have begun to slow down, it is still the home appliance product with the highest purchase ratio in the past two years.
One of the main reasons for the slowdown in the air purifier market is that China’s smog days have decreased and PM2.5 has also fallen. At this time, most consumers will unconsciously think that since the outdoor air quality becomes better, there is no need to use an air purifier. Is this really the case? When we buy an air purifier, what else can we do besides giving ourselves peace of mind?
Healthy breathing environment
The arrival of winter implies that the high incidence of respiratory diseases has come again. The main reason is that it is cold in winter and people prefer to stay indoors with closed doors and windows. However, a warm and confined space will accelerate the growth of germs and increase the chances of the spread of respiratory diseases.
Among them, infants and young children are most vulnerable to air pollution, and coughs, colds, tuberculosis and other problems are also common in winter. According to the WHO, children breathe faster than adults and therefore absorb more pollutants. In addition, the living space of children whose brains and bodies are still developing is closer to the ground, where the concentration of some pollutants is highest.
This food blogger Nuomi love letter has a deep understanding. She said at a recent sharing meeting: “Last year, my second treasure had a full cough in the winter for a month. I took her to see a doctor. The doctor gave me an antidote. Allergy medicine, not cold medicine. Because her cough is caused by allergies in the air.” So, she bought an air purifier, and after using it for a period of time, she found that the baby’s cough symptoms did not get better. less.
The function of the air purifier itself is to filter various pollutants and germs in the air and provide people with a healthy breathing environment. When consumers choose an air purifier, of course, what they care most about is its purification function.
However, the filter screen and the filtering technology are different, and the cleaning ability of the air purifier is quite different. Generally, we are divided into pure physical air purifier and non-pure physical air purifier according to the working principle of the filter. The pure physical air purifier is to completely rely on HEPA, activated carbon and other filters to filter the polluting particles in the air. Pure physical air purifiers include Xiaomi, 352, IQAir, Honeywell and so on. The non-pure physical air purifier purifies the air through electrostatic technology, or a combination of filter and electrostatic technology. The advantage of this technology is that it not only improves the clean air output ratio (CADR value), but also reduces noise. However, non-pure physical air purifiers will produce a small amount of ozone. Most Japanese brands are non-pure physical air purifiers.