Many times, there are too many concrete things in life that condense our attention, such as work, house and car. At the same time, the pressure of life often makes us exhausted, leaving us too busy to take care of those relatively abstract life components. The inertia of thinking over time makes us feel that houses and cars are the guarantee of quality of life, but the increasingly polluted and neglected air challenges our health.
Chai Fahe, vice president and researcher of china environmental science Research Institute, said at the symposium on urban ambient air quality management held by the Ministry of Environmental Protection in Shijiazhuang on June 65438+ 10/year 1 0 that the overall urban ambient air quality in China is poor in the world, and people's health should be paid more attention to while developing the economy. With the increasingly serious environmental pollution and the pollution of many indoor decoration and decorative materials, air source has become an invisible killer affecting human health. 68% of human diseases are related to air pollution, and the World Health Organization ranks indoor air pollution as the first carcinogen in 18.
For the reasons of poor urban environment in China at present, diesel-fuel analysis shows that the emission and intensity of pollutants are at a high level, and the emission per unit area and GDP is many times higher than that of foreign countries, which is the fundamental reason. In addition, he believes that the most important reason is the mode of development, including the economic structure is too biased towards enterprises with high energy consumption and high pollution. Coupled with the rapid growth of motor vehicles in recent years, the energy structure is dominated by coal. These are the factors that lead to serious pollution.
With the rapid development of economy, people's quality of life has improved steadily, and various high-tech products have gradually filled people's living space. However, while enjoying the convenience brought by modern life, while the quality of almost everything around us has improved, the air quality has declined, and the air that should be transparent and abstract has become more and more concrete. However, people are always used to looking for the most authentic and precious things from the hustle and bustle after all the prosperity is exhausted, and implementing them healthily, so it also opens up the market for the prosperity of air purifiers.
In February this year, the State Council agreed to issue the newly revised Ambient Air Quality Standard, which increased the monitoring index of PM2.5, commonly known as particulate matter that can enter the lungs, because it contains a lot of toxic and harmful substances, which has a great impact on human health and atmospheric environmental quality. Since PM2.5 began to monitor, people's attention to air quality has increased significantly, making air purifiers once hot. Although the market is hot, it seems a bit flashy.
Indeed, although the air purifier market is hot, the audience penetration rate is always low. At the moment of serious air pollution, the purchasing power of air purification products continues to be low, and the reasons are worth pondering. In fact, consumers' attitude towards air purifiers generally maintains an abstract and vague concept, and there are many misunderstandings, mainly in the following aspects:
First, window ventilation can purify the air and improve the indoor air quality. If the outdoor environment is good, ventilation can improve the composition of oxygen in the air and reduce the concentration of toxic gases. But if outdoor pollution is more serious than indoor pollution in heavily polluted areas, it will lead to worse environment. Therefore, traditional ventilation can not only improve the indoor air pollution environment, but also increase the pollution intensity.
Second, every brand of air purifier can solve the problems of sterilization, odor removal and in addition to formaldehyde. To completely sterilize, deodorize and in addition to formaldehyde, the purification technology required by the air purifier is quite scientific and exquisite. In order to fool consumers, some manufacturers arbitrarily exaggerate the functions of their products, but in fact they can only be removed from the shelves.
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Some harmful substances. Therefore, not every brand of air purifier can eliminate harmful substances such as bacteria, odor and formaldehyde at the same time.
Third, the air purifier has the function of purifying air, and the additional functions such as humidification and skin care are redundant. With the continuous improvement of people's quality of life, the purifiers on the market not only stay at the level of air purification, but also have many additional functions. These additional functions can not only improve people's enjoyment of living alone, but also play a certain role in air purification. For example, the humidification function of the air purifier can humidify the air on the one hand and make the indoor air moist; On the other hand, it can effectively prolong the life of the net ion group and make the air purification lasting.
With the development of economy and science and technology, the damage to the environment is becoming more and more serious, and the pressure of life is increasing. The incidence of some "urban diseases" and "modern civilization diseases" is gradually rising. Fresh air not only contributes to physical and mental health, but also helps to relieve stress and relax.
Where does the harm come from?
Maybe we run for life in different environments every day, maybe we often play different roles in different positions, maybe we walk different lives and enjoy different scenery. Although there are so many or so many differences, we breathe the same air every day. However, the once fresh and clean air has inadvertently become a victim of economic and social development, and this kind of harm fills many corners of our lives.
Interior decoration
With the gradual improvement of living conditions, people have higher and higher requirements for the quality of home environment, and home decoration has become a fashion. However, in the process of decoration, some substances harmful to health are often produced, among which formaldehyde and radon are more representative. Formaldehyde is generally produced in plastics, thermal insulation materials and plastic furniture used for ceiling and wall veneer at home. It is a colorless and soluble irritating gas, and it has an odor when the indoor content is 0. 1 mg/m3, which makes people uncomfortable. 30 mg/m3 can cause immediate death.
The main source of radon gas is radioactive building materials near the lake. When the radon concentration in the indoor air is lower than that in the building structure, the radon in the building will diffuse into the indoor air and emit harmful rays. High doses of radon can cause lung cancer, leukemia, skin cancer and other respiratory diseases. It is reported that some scientists have come to the conclusion that radon is the second leading cause of lung cancer after smoking.
Kitchen fume
The kitchen is the birthplace of all kinds of delicious food, and the tradition of "food is the most important thing for the people" in China also makes the kitchen environment closely related to people's health. When cooking in the kitchen, burning various fuels will produce a lot of gas pollutants, such as smoke, carbon dioxide, nitrogen dioxide, sulfur dioxide and so on. , will have a great impact on the kitchen air. In addition, in the cooking process, toxic substances such as benzopyrene produced by high oil temperature will cause serious pollution to the living room air, while harmful compounds such as aldehydes, alcohols and benzofurans will also cause harm to human organs. Butadiene in oil fume also has the function of genetic toxicity to cells.
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Experts have investigated the kitchen pollution in Zigong City, Sichuan Province, and found that the content of pollutants in the kitchen is generally higher than that outside, up to 7 times. The difference of energy structure directly leads to the difference of indoor pollutants. Some surveys show that after cooking for one hour, the content of harmful substances produced in the kitchen is more than 20 times higher than that before ignition, and the smoke will exceed the standard by more than 70 times within half an hour.
home appliances
The use of various electrical appliances not only brings convenience and enjoyment to people's lives, but also causes corresponding pollution. Surveys in some countries show that people who stay in air-conditioned rooms for a long time are prone to "air conditioning syndrome", but in an environment with suitable temperature and humidity, they are prone to symptoms such as dry breathing, stuffy nose, joint pain, chest tightness, breath holding, inattention and fatigue. The cause of "air conditioning syndrome" is mainly positive ions produced by electrical equipment such as air conditioners. After repeated filtration, the concentration of air ions changed, and the number of negative oxygen ions decreased obviously while there were too many positive ions. People who work and live in a low negative ion environment are prone to endocrine and autonomic dysfunction.
Recently, air pollution caused by photocopiers has also attracted people's attention. A survey published by the National Institute of Public Health in Japan shows that in some places where photocopiers are often used, the ozone concentration is enough to endanger people's health. Ozone has a strong oxidation effect, and the nitrogen oxides produced by its oxidation have a strong irritation to the human respiratory tract.
lavatory
The chief culprit of air pollution in toilets is ammonia. On the one hand, it comes from the release of antifreeze used in winter construction in summer, on the other hand, the thick waterproof layer in the bathroom will also produce a certain amount of ammonia, and ammonia is also easy to accumulate in the sewer. Ammonia can paralyze respiratory cilia, damage mucosal epithelial tissue, make pathogenic microorganisms easy to invade, and also enter the blood through alveoli, combine with hemoglobin and destroy oxygen transport function. Some bathrooms don't have ventilation window, which leads to some toxic and harmful substances can't be evacuated in time, especially the master bedroom with master bathroom. At the same time, due to the high humidity in the bathroom, it is easy to breed harmful bacteria.
Furniture and accessories
Furniture and decorations are an important part of people's home life, but when people buy furniture, they often focus on fashion, portability and low price, ignoring many health "killers" hidden in furniture. For example, in the production process of wood-based panel furniture, adhesives need to be added for bonding, and the furniture surface needs to be coated with various paints. These adhesives and paints contain a lot of volatile organic compounds, which will seriously pollute the indoor air. Inhaling these harmful substances for a long time will cause damage to the respiratory system and nervous system.
Carpet is the most popular decoration in hotels, family living rooms and bedrooms. In fact, carpets will also have a negative impact on indoor air. The fine wool of pure wool carpet is an allergen, which can cause skin allergy and even asthma. Chemical fiber carpets will release formaldehyde, propylene and other substances into the air. In the production process of curtains, artificial resins, dyes, finishing agents and other additives are often added, and these additives contain formaldehyde.
In addition to some pollution sources listed above, the emission of harmful gases, such as automobile exhaust, keeping pets,
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Closed places or places affected by secondhand smoke, as well as public places such as hospitals and hotels, are easy to reduce air quality and even contain some harmful bacteria, thus endangering people's health.
Aspects of air purifier
Air purifiers are mainly small household appliances used to purify indoor air. Using air purifier to purify indoor air is an internationally recognized method to improve indoor air quality. An air purifier with excellent performance can effectively remove harmful gases in the air and adsorb suspended particles in the air, especially various bacteria and viruses. Generally, suspended particles are used as survival carriers, so they are also removed. Air purifier is of great benefit to improving indoor air quality and maintaining human health.
At present, the air purifiers on the market are novel in appearance, various in types and advanced in functions, which provide people with a broad space for purchasing. Although in appearance, most air purifiers are mainly cubes, considering the high utilization rate of modern home space, there are also many small and exquisite purifiers that have attracted widespread attention in the consumer market. At the same time, according to the different places where the purifier is used, the design in appearance and volume is also different.
According to the applicable environment, the types of air purifiers are mainly divided into automobile type, household type and commercial type, and generally have the functions of circulating and refreshing, filtering, sterilizing (microorganism), broad-spectrum sterilization, odor elimination, smoke and dust elimination, air regeneration and so on. In addition, some air purifiers have the functions of humidification and dehumidification on the basis of air purification, which are widely used and suitable for air purification in homes, office buildings, hotels, shopping malls, automobiles and other places. Due to the different application environments, the application fields of air purifiers are also different. For example, a small purifier placed on the desk can mainly purify the air near the desk. For drivers, car air purifier should be chosen to purify all kinds of car odors and even relieve driving fatigue. Therefore, attention should be paid to the applicable environment in the process of purchasing, so as not to achieve the expected purification effect.
The performance of air purifier mainly depends on the output ratio of clean air. The greater the output ratio of clean air, the higher the purification efficiency of the purifier. In order to make the indoor air quality reach a certain cleanliness standard, the air purifier has two necessary hard indicators. First, it must ensure that the indoor air reaches a certain number of air changes, that is, it requires the built-in fan of the air purifier to have a certain air volume. The international standard is to ensure that the applicable area is ventilated 5 times per hour. Second, the primary purification efficiency of the air purifier must be relatively high. The higher the purification efficiency, the better the air purifier will be. In addition, the purification effect of the air purifier will be more convincing if it is verified by a third-party authority.
The maintenance of air purifiers depends on different brands and types of air purifiers. But overall, the maintenance is relatively simple. Generally speaking, the front filter screen (usually the back cover of the chassis) is used for a long time, which will gather some dust, thus affecting the effect of air intake and air purification. Therefore, it is necessary to use a vacuum cleaner to remove dust, or use a rag to clean it, or even rinse it with water. Some filters, such as activated carbon filters, need to be exposed to the sun regularly to better maintain the purification efficiency. The deodorizing filter screen of a few brands of air purifiers has reached the technical level of cleanability, which can maintain the purification efficiency by cleaning and prolong the cycle of replacing the filter screen.
Ion generators are generally built-in and do not need to be cleaned. A better ionizer is more efficient. Special attention should be paid to the replacement of the filter element during the use of the air purifier, and the time for replacing the filter element should be based on the actual product.
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Use time to determine.
Air purifier can bring people pure air and protect people's health, especially suitable for many special people. For example, pregnant women, children, the elderly, patients with respiratory diseases, office workers, and people who drive for a long time, are crowded and indoor polluted. Pure air contributes to the growth and development of human body, makes people feel happy and improves work efficiency. For example, pregnant women will feel uncomfortable indoors with serious air pollution, and symptoms such as dizziness, sweating, dry mouth, chest tightness and vomiting will have a negative impact on the development of the fetus. Children born to pregnant women who breathe fresh air are three times more likely to have heart disease. And office workers are mostly in the office, facing the computer every day, and rarely have the opportunity to exercise outdoors and breathe fresh air. In a constant temperature and closed environment with poor air quality, it is easy to cause dizziness, chest tightness, fatigue, emotional ups and downs and other uncomfortable symptoms, affecting work efficiency, causing various diseases, and even causing cancer in serious cases. Therefore, choosing a suitable air purifier will get twice the result with half the effort for people's quality of life.
There is still a long way to go.
Since the advent of air purifiers, more and more people hope to improve air quality through purifier products. Under the strong market demand, many manufacturers compete to increase the scale of this field and launch air purifiers with various functions. However, the reality is that no matter how hot the market is, its utilization rate is always low. According to the survey, at present, the annual sales volume of air purifiers in the world exceeds 6,543.8+million units, with the penetration rate of 654.38+07% in Japan and 27% in the United States, while the household penetration rate in China is extremely low, less than 0.654.38+0%. The difference is so great, not because the air quality in China is better than that in foreign countries, nor because the purchasing power of consumers in China is insufficient, but because the market is immature and consumers lack a correct understanding of this product.
At present, the domestic air purifier market is mixed, not only the product quality is uneven, but also the after-sales service system is not perfect. Coupled with the "discount" of product confidence and the inconvenience of maintenance after purchase, the market purchasing power is flat or even weak. At the same time, the exaggerated propaganda of the manufacturer "Wang Po sells melons and boasts herself" also disturbs consumers' purchasing concept and reduces their purchasing power to some extent.
In fact, air purifiers entered China long ago, but most consumers' understanding of air purifiers is still in the primary stage. Although some big brands try to lead the industry trend, due to immature development and low industry threshold, many unknown small brands also occupy a place in this market with excellent imitation and vigorous publicity, but their own technologies may not meet the standards. The disorder of the industry is largely due to the lack and imperfection of policy standards in the field of air purifiers in China.
It is reported that most air purifiers on the market have test reports and indicate the purification efficiency. However, according to insiders, due to the gap between the testing conditions required by enterprises and the state, many testing indicators provided by enterprises contain "moisture". Even according to the testing standards required by the state, there is a big difference between the laboratory and the actual use environment, and the purification efficiency is often greatly reduced. It is understood that China's current air purifier standards are directly translated from abroad, but the categories and components of pollutants at home and abroad are different, so the standards have certain limitations.