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Indoor Air Quality

Indoor Air Quality

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Poor air quality can cause negative effects towards your health such as allergies, respiratory illnesses, and skin problems. Considering that we spend more than 90% of our time indoors, it’s important that indoor air is clean and pollutant-free to protect our health and wellbeing.

Indoor air quality statistics

According to the EPA, indoor air pollution is among the top 5 environmental risks to public health. In fact, indoor air quality can be up to 5 times worse than outdoor air quality!

Effects of indoor air pollutants towards your health may range from symptoms such as eye and throat irritation, to respiratory diseases that may arise from long term exposure to indoor pollution.

What is in indoor air

Indoor air could harbour a range of pollutants unseen to the naked eye. Airborne particles such as diesel exhaust, carbon, dust, smoke, fibres, and pollen easily enter the home through opened doors and windows.

Cooking odours, pet odours, chemicals, sink or drain smells contribute to an unhealthy variety of unpleasant and toxic household odours and gases.

Around the home, furniture, office equipment, cleaning supplies, paint, glue and varnishes are just some of the unhealthy Volatile Organic Compounds (VOCs) that are harmful to our long term health.

Not to mention, there could be a range of microorganisms such as bacteria, mould, and viruses, floating around our home!

Sources of indoor air pollutants

You may think your home air quality is perfectly fine, but these pollutants are well hidden from the naked eye. Some don’t emit a distinct smell or show obvious physical signs, so you barely notice them around your home.

However, the sources of these indoor air pollutants are everywhere in our home. Pollutants such as mould and mildew could be lingering in our bathroom and laundry room. We could also be exposed to Volatile Organic Compounds (VOCs) from paint, varnishes, upholstery, furnishing and carpets.

That’s why having an air purifier is so important at home. Air purifiers help to clean the air of unwanted pollutants. They are especially useful for those suffering from asthma or allergies.

Air purifier benefits

Air purifiers are appliances that filter out pollutants such as dust, pollen, viruses, bacteria, and odours from indoor air. With the help of air purifiers, we can improve indoor air quality and protect the health of ourselves and our families.Cleaner air provides long term benefits by reducing respiratory diseases and airborne infections caused by indoor air pollutants. Moreover, air purifiers also help to improve air circulation and eliminate mould spore buildup.Indoor air pollutants are harmful to long term health, so consider investing in an air purifier to improve indoor air quality at home.

Browse our range of air purifiers online or contact us if you would like personalised assistance.

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Haze or more serious impact: causing the Pacific storm to be more violent

Haze or more serious impact: causing the Pacific storm to be more violent

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US researchers reported in a new issue of the Proceedings of the National Academy of Sciences on the 14th that the simulation results show that air pollution in Asia may increase the Pacific storm.

Researchers at NASA’s Jet Propulsion Laboratory used global climate models to simulate current and historical pollution. It was found that the ‘optical thickness’ of aerosols in the North Pacific increased significantly due to air pollution in Asia. The convective clouds become thicker and higher, resulting in the strengthening of short-wave and long-wave ‘cloud radiation’ at the top of the atmosphere.

Wang Yuan, the first author of the research report, told reporters: ‘Our simulation results show that the suspended particles produced by anthropogenic pollution can effectively change the microphysical properties and optics of convective clouds in the Pacific storm system as cloud condensation nuclei and ice cores. More importantly, by interacting with the cloud, particulate matter can change the heat distribution in the storm system, changing the dynamics of the storm and making the storm system worse.’

He further explained that the Pacific Storm System is an important part of the global atmospheric circulation and plays a role in transporting heat and water vapor to high latitudes. As a result, storm systems that are enhanced by air pollution in Asia have a significant impact on weather systems in other parts of the world, and are potentially linked to the observed anomalous weather conditions in the northern hemisphere winter. But he also pointed out that much research is needed on the relationship between Asian air pollution and specific extreme weather changes.

Wang Yuan pointed out that this new study emphasizes the effects of suspended particulate matter in the atmosphere, especially anthropogenic emissions of pollutants on clouds, precipitation and atmospheric circulation systems worldwide. Therefore, the impact of suspended particulate matter other than greenhouse gases needs to be considered when conducting global climate predictions and developing relevant international policies.

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In the smog, don’t think that the indoor air is cleaner than the outside

In the smog, don’t think that the indoor air is cleaner than the outside

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Now that it has entered a period of high incidence of smog, people began to experience the pain of breathing. Many people think that the indoor air in the haze is much better than the outdoor. As long as the doors and windows are closed and the house is at home, it can prevent smog. Is that really the case?

1.Is the indoor air better than the outdoor in the fog?

Engineers from the China Academy of Building Research have found through many field measurements that the concentration of PM2.5 in the room is not necessarily lower than that of the outside, due to factors such as smoking and cooking. The measurement found that in the case of no window opening, no smoking or cooking, the concentration of indoor PM2.5 is generally about 30% to 40% lower than the outdoor concentration. For example, if the outdoor is about 500, the indoor temperature is usually about 300-350. Another set of test data shows that some household indoor PM2.5 concentration values ​​are higher than outdoor. One of the households found that the outdoor PM2.5 concentration was 230 μg/m3 and the indoors reached 474 μg/m3 when the door was closed for several days. Therefore, it cannot be said simply that the indoor air in the haze is necessarily better than the outdoor.

2.The source of indoor air pollution

Indoor PM2.5 is affected by many factors. Previously, they also monitored some public places, and the PM2.5 concentration inside was even higher than that of the outdoor. This was caused by many factors. Hou Li’an, an academician of the Chinese Academy of Engineering, said that the source of indoor PM2.5 is mainly from outdoor pollution sources and indoor pollution sources.

Source 1: Outdoor

When the fog is severe, the window opening is not properly ventilated, and the indoor PM2.5 concentration will rise rapidly. At the same time, in the case of closing the doors and windows, it does not mean that the air flow is isolated. The tiny PM2.5 particles can still run into the house. At the same time, people will carry a variety of fine particles and microorganisms when they go out to their homes.

Source 2: Indoor

In fact, daily activities such as gas burning, kitchen fume, indoor smoking, air conditioning heating, furniture decoration, etc. will bring PM2.5 to the interior. Because the indoor space is small, the probability of producing PM2.5 in a closed room is more obvious than that in the outdoor, so the home is not necessarily absolutely safe at home.

3.How to purify indoor air

In the face of the ‘ten crouching’ environment, how should we properly clean indoor air, effectively suppress indoor PM2.5 pollution, and create a healthy and healthy indoor environment.

1)Properly open the window ventilation

If the fog does not open the window, it can reduce the intrusion of PM2.5. However, long-term indoor ventilation will cause the concentration of carbon dioxide and other exhaust gases to slowly exceed the standard, and the content of microorganisms and bacteria will increase, even more than outdoor air. Not enough, people will feel poor breathing. Therefore, smog days also need to open windows for a short time. The staff of the provincial environmental monitoring station suggested that when the outdoor air pollution is not very serious, avoid the traffic peaks and winds caused by morning and evening. When dust is raised, under the static wind conditions, you can open the window twice a day for 20-40 minutes. If you encounter continuous pollution, you can hang a wet towel near the screen window when ventilation, which can filter and absorb. effect.

2) Raising green plants

Some experts suggest that when outdoor air pollution is serious, you can plant more green plants with relatively strong adsorption capacity on balconies, terraces, indoors, and try to select large leaf plants. Because of the large leaf area and many pores, it can not only adsorb PM2. 5, can also increase the oxygen content of the air. Such as green radish, evergreen, tiger skin, ivy and so on. Since the surface of the plant contains a layer of adsorptive mucus, this mucus has a strong adsorption function for tiny particles. At the same time, plants can also adsorb a small amount of PM2.5 during photosynthesis. Therefore, using natural means such as green plants to help slow indoor PM2.5 pollution is both effective and trouble-free, and can add a green color to the home.

3)Less smoking

Cigarettes, cigars and pipes produce a lot of fine particles in the PM2.5 category when incompletely burned. Tobacco smoke contains more than 7,000 compounds, including 69 carcinogens and 172 harmful substances, which can seriously harm the smoker itself. And the physical health of the inhaled ‘secondhand smoke’ audience is even worse in the ashes. Therefore, smokers should smoke as little as possible, whether they are going out or staying indoors.

4)Choose the air purifier

A good air purifier has a good adsorption effect on PM2.5 and can play a certain purification role. The core of the air purifier is the filter. If you want to filter PM2.5 particles, the best internationally recognized HEPA high-efficiency filtration technology can effectively suppress allergens in the air, such as dust, pollen, germs, second-hand smoke, dust. Such as small particles, the purification rate for particles of 0.3 microns is 99.97%. If it is used to filter cigarettes, the effect of filtration can be almost 100%, because the size of the particles in the cigarette is between 0.5 and 2 microns, and the membrane cannot pass through the HEPA filter. For the purchase of air purifiers, please click here to view the product content of our station.

5)Light diet, soot filtration and discharge

Cooking fumes also have a small contribution to PM2.5. Cooking, frying, frying, roasting, etc. will cause indoor PM2.5 to soar, so when cooking, replace with cold, steamed, boiled, marinated, etc. It is possible to control the oil temperature not to exceed 200 °C.

When selecting a range hood, the inner row hood should be considered more, because the hood type hood only discharges the exhaust gas directly to the outside after a simple soot separation, which is very harmful to the collective environment. The inner-row hood also uses a filter to absorb harmful gases after the soot is separated, and then discharges the purified gas. At the same time, the range hood should be opened early and closed, and the kitchen window should be ventilated.

6)Do indoor cleaning and personal hygiene

Wipe the tables and chairs with water in the house and mop the floor, because the humid air helps to reduce dust and fine particles floating in the air. In addition, the use of a humidifier, the placement of towels on the heater, the cleaning of sheets, pillows, etc. with a wet towel are all desirable methods of absorbing fine dust. In addition, use air fresheners or cleaning products as little as possible, including aldehydes, benzenes and other pollutants.

After going out to the room, you should wash your face, rinse your mouth, clean your nose, and remove the contaminated residue attached to your body. This will minimize the adverse effects of smog on health. It is best to use warm water when washing your face, which is good for washing off the particles on your face. When cleaning the nasal cavity, you can use a clean cotton swab to wash the water repeatedly, or repeatedly use the nose to gently absorb water and quickly rub your nose, while avoiding coughing. In addition to facial cleansing, the exposed parts of the body are also cleaned.

7)Replace the closed door and window

Under the influence of outdoor bad weather, tiny particles will enter the room through poorly sealed doors and windows, which is an important way to generate indoor PM2.5. The use of more airtight doors and windows is conducive to the reduction of indoor pollution values. Therefore, when replacing the doors and windows, it is necessary to choose a good airtightness, and the sound insulation and dust can be obtained in one fell swoop. The sliding window is more airtight than the casement window. When replacing, try to choose the casement window.

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Effective countermeasures to eliminate indoor air pollution

Effective countermeasures to eliminate indoor air pollution

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1.Increasing the frequency of indoor ventilation is a key measure to reduce pollution. In the spring, summer and autumn, the average family should leave vents or often open ‘small windows’; in the winter, at least 10 minutes in the morning, afternoon and evening. In places where crowds of classrooms, theaters, carriages, shops, etc. are gathered, special attention should be paid to ventilation and ventilation.

2.Absolutely quit smoking in the room and work and study rooms.

3.Households that use coal, firewood, etc. to maintain the stove, always maintain a good ventilation, to prevent incomplete combustion.

4.Pay attention to the air hygiene in the kitchen. Every time you finish cooking, you must open the window to change the air; when frying and frying food, you should strengthen the ventilation. Soot pollution is especially harmful to the human body. It is better to install a kitchen range hood.

5.Proper use of household chemicals. When using chemical agents, the window should be opened. After use, the window should not be closed immediately. At least the window should be opened for half an hour.

6.Do everything possible to increase the time of outdoor activities. On a good holiday, the whole family should go out of the house and go to nature. For the old, weak, sick, disabled and young children who have stayed indoors for a long time, they should arrange certain outdoor activities for them. Chronic patients, especially those who can’t take care of themselves in bed or in the second place, are important indoor pollution sources, and in turn are the primary victims. Therefore, it is necessary to strengthen the care and hygiene care for such patients, wash and change clothes and bedding, and pay attention to frequent window ventilation.

7.Put some flowers and plants indoors. It is also very effective to eliminate or reduce the harm caused by ‘decoration syndrome’ to people.

8.Install an air purifier. When using an air purifier, pay attention to window ventilation and pay attention to air flow.

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Smoking pollution of indoor air

Smoking pollution of indoor air

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Today, there are more and more people who are exposed to smoking and passive smoking. Smokers may not have a deep understanding of the dangers of smoking to themselves and others. In fact, smoking can shorten your life. Second-hand smoke from smoking can pollute indoor air and affect the health of people around you, especially young children, babies and fetuses. Both smokers and passive smokers can take some measures to prevent tobacco damage.

Of course, the most fundamental measure is to stay away from tobacco pollution.

The harm of smoking to the human body

Smoking can shorten a person’s life. The World Health Organization report shows that the harm of smoking to humans is multifaceted, mainly leading to asthma, pneumonia, lung cancer, hypertension, heart disease and reproductive development.

Smoking is one of the main causes of chronic bronchitis, emphysema and chronic airway obstruction. Experimental studies have found that long-term smoking can damage and shorten the cilia of the bronchial mucosa, affecting the clearance function of cilia. In addition, submucosal gland hyperplasia, hypertrophy, increased mucus secretion, and changes in composition, easy to block bronchioles. In dog experiments, exposure to large amounts of soot can cause emphysema changes.

Chronic bronchitis in smokers is 2 to 4 times higher than that of non-smokers, and is proportional to the amount of smoking and smoking years. Patients often have chronic cough, sputum and difficulty breathing during activities. Pulmonary function tests showed obstruction of the airways, decreased lung compliance, decreased ventilation and diffuse function, and decreased arterial oxygen partial pressure. Even young asymptomatic smokers have mild lung dysfunction. COPD is prone to spontaneous pneumothorax. Smokers often suffer from chronic pharyngitis and vocal corditis.

Respiratory diseases are one of the most harmful diseases for Chinese people. Death caused by lung cancer ranks first among all cancers. According to the latest figures from the World Health Organization, there are 3 million people worldwide each year, with more than 8,000 people every day, and 6 people die every night from diseases caused by smoking. The deaths per minute include 1 in the United States, 2 in Europe, 1 in the former Soviet Union, 1 in China, and 1 in other countries. Experts expect this number to rise to 10 million in 2020. Currently 30% of cancers, 75% of chronic bronchitis and emphysema, and 25% of heart disease are caused by smoking. If no effective smoking ban is taken, by 2025, there will be about 10 million people worldwide each year, that is, 27,000 people a day, and 19 people will die from smoking-related diseases every minute, 70% of them in developing countries. One-third of young people are likely to become “permanent smokers,” meaning that a large number of them will die prematurely between the ages of 35 and 69. It is well known that the nuclear bombs that landed in Nagasaki and Hiroshima in Japan 50 years ago swallowed more than 200,000 people, but they ignored the current figure, which is only 1/15 of the total number of people killed by smoking each year.

The effect of smoke on indoor air

Tobacco smoke is the main source of indoor respirable particulate matter and constitutes 90% to 93% of indoor respirable particulate matter under smoking conditions. These respirable particulates are the carriers of most pollutants and microbial adsorption. Fine particles (PM2.5) with a diameter of less than 2.5 microns are more easily absorbed into the lungs and are the main health hazard in tobacco smoke. Therefore, measuring the concentration of PM2.5 in indoor air helps to understand the degree of harm of indoor tobacco smoke, and is a commonly used method for evaluating the exposure level of secondhand smoke. According to the monitoring data of PM2.5 concentration in public places, the average concentration of PM2.5 in the completely non-smoking place is the lowest, which is 33.3 μg/m3. In contrast, the average concentration of PM2.5 in non-smoking places is 103.95 μg/m3, which is more than three times the concentration of PM2.5 in a completely smoke-free place. The concentration of PM2.5 in bars and nightclubs that are not smoking-free is 4 times that of completely non-smoking places. Moreover, the concentration of PM2.5 in the smoking room of the station is 300 times that of the outdoor, and the concentration of PM2.5 measured at 5 meters from the smoking room is still 18 times that of the outdoor. 120 minutes after smoking, the concentration of inhaled particulate matter can be reduced to the standard limit.

The smoke emitted during smoking is the main source of carbon monoxide and carbon dioxide in the general room. A cigarette emits about 80 mg of carbon monoxide and about 100 mg of carbon dioxide. Especially in some public places, people are dense, and the concentration of carbon monoxide in the air is very high. . According to the survey, in a crowded conference room, the concentration of carbon monoxide reached 46.4 mg/m3. When smoking in a normal room, the concentration of carbon monoxide was often between 2.3 and 11.6 mg/m3.

The smoke contains a high concentration of carcinogens. Cigarette smoke contains 69 kinds of carcinogens such as nicotine, tar, carbon monoxide, benzopyrene and formaldehyde. The concentration of carcinogen benzopyrene can be as high as 0.16 micrograms per cubic meter of air. Moreover, the smoke of tobacco also contains a relatively high concentration of formaldehyde. As long as two cigarettes are smoked in a 30 square meter indoor space, the concentration of formaldehyde in the indoor air can reach 0.1 mg/m3 or more. At 180 minutes after smoking, the formaldehyde concentration was still exceeded.

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There is no smog in summer, but it is more necessary to open an air purifier

There is no smog in summer, but it is more necessary to open an air purifier

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As soon as summer arrived, the foggy days were significantly less and the air quality gradually improved. Many people have turned off their home air purifiers, especially in the southern regions where smog was not as serious. However, most people don’t know that in the summer without smog, they should open the air purifier!

TVOC in summer

Everyone knows that winter should guard against smog, but ignore the ‘TVOC’ in summer.

‘TVOC’ refers to the total volatile organic compounds in the room, including carbon monoxide, carbonates and ammonium carbonate, and a series of toxic and harmful gases in the air. These substances will volatilize more indoors as the temperature rises in summer.

The problem of volatilization of indoor harmful gases is often more severe in summer than in winter.

For formaldehyde, a pollutant that is particularly harmful to the body, its volatile release is greatly affected by temperature. For every 1 °C rise in room temperature, the concentration of formaldehyde volatilized from wooden furniture and flooring increased by 0.15 to 0.37 times. Tiles also often contain serious carcinogenic gases such as radioactive cesium, which also spread as temperatures rise.

In summer, everyone is used to closing doors and windows and air conditioning. As a result, indoor pollutants are more difficult to reduce. In addition, if the interior of the air conditioner is rarely cleaned, the indoor bacterial microorganisms are more likely to grow and are inhaled into our respiratory tract along with harmful gases. Therefore, staying in the air-conditioned room often feels dry mouth and mouth, itching of the throat, mild symptoms of cold, and serious respiratory diseases, which is often referred to as ‘air conditioning disease.’

The World Health Organization has listed indoor air pollution as a top 10 threat to human health, including hypertension, hypercholesterolemia and obesity. The main culprit of respiratory diseases and intestinal infections and even leukemia, which are predisposed to infants and young children, are also closely related to indoor air pollution.

Most families generally open windows for long periods of time after the renovation of the new home. However, even if you have been through the wind for half a year, it is not a cure.

Research by the National University of Yokohama in Japan shows that the release period of indoor formaldehyde is generally 3-15 years. Short-term ventilation is unable to completely remove indoor formaldehyde. These harmful volatiles will accompany the long-term existence of residence.

In addition, more people are hoping for bamboo charcoal bags, plants and fruit skins. As the saying goes, partial treatment of serious illnesses, it turns out that these effects on eliminating indoor pollution are almost negligible and can be ignored.

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What kind of people need an air purifier?

What kind of people need an air purifier?

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The global economy continues to grow at a high rate and environmental pollution is becoming increasingly serious. According to statistics, indoor environmental pollution has caused 35.7% of respiratory diseases, 22% of chronic lung diseases and 15% of bronchitis, bronchitis and lung cancer. Air pollution causes millions of people worldwide to die prematurely each year. In 2002, the World Health Organization clearly listed indoor air pollution as the top ten threat to human health. For some special people, air pollution will have a greater impact on them. So who is the most harmful to indoor air pollution?

Children

Because the child is developing, the immune system is relatively fragile and vulnerable to air pollution, resulting in decreased immunity, induced respiratory and blood diseases, resulting in slow body development and greatly reduced children’s intelligence. Long-term living in air pollution can increase the risk of abnormal lung function in children by 30%-70%.

According to expert statistics, the prevalence of asthma in children in China is 2-5%, and the prevalence of children aged 1-5 is as high as 85%. Therefore, the harm of indoor air pollution to children should not be underestimated.

Pregnant woman

As a special group, pregnant mothers should not only pay attention to their own bodies, but also pay attention to the small life in the stomach. The fetus is very sensitive to air quality during development. If the pregnant mother has long-term exposure to airborne pollutants during the first 6 months of pregnancy, it will increase their chances of illness and death, and cause premature birth and other problems.

Pregnant women staying in a serious air pollution environment for a long time will feel physical discomfort, may have symptoms such as dizziness, sweating, dry throat, chest tightness and vomiting, which have adverse effects on fetal development. In a long-term contaminated indoor environment, the probability of a baby suffering from a heart disease is several times that of an ordinary baby.

Old man

After entering the old age, the body functions are declining, the constitution is weaker than the young, and the resistance is relatively poor, and it is more susceptible to environmental factors to induce various diseases. Air pollution is not only an important cause of respiratory diseases such as bronchitis, pharyngitis, and pneumonia in the elderly, but also causes malignant diseases such as asthma, colon cancer, brain tumors, and Alzheimer’s disease (Alzheimer’s disease).

Living in a polluted environment for a long time will lead to a decline in liver and kidney function in the elderly. In addition, chemical pollution such as formaldehyde has a strong carcinogenic effect, which further increases the incidence of cancer in the elderly.

Office worker

Most companies are now located in office buildings. Because of the high floor and long window closure, the air flow inside is very poor. In addition, the office staff is basically indoors for a day, so it is more susceptible to indoor air pollution poisoning in terms of time probability.

If you are in an environment with poor air quality for a long time, it may easily lead to dizziness, chest tightness, fatigue, emotional ups and other discomforts, which will greatly affect work efficiency and cause various diseases. In severe cases, it may cause cancer, and the office environment becomes a watch. A healthy chronic killer that is not seen.

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Air pollution hazards are similar to ‘secondhand smoke’

Air pollution hazards are similar to ‘secondhand smoke’

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Air pollution is associated with many health risks associated with smoking, such as lung cancer, emphysema, heart disease, and stroke. The more you breathe, the higher the risk. People who never smoke, with the increase in air pollution levels, have an increased risk of developing lung cancer and dying.

Even a very low level of PM2.5 will quietly add to the death of cardiopulmonary disease. WHO Director-General Tedros Adenom Gebrisos believes that air pollution is a ‘new tobacco’.

Arden Pope believes that air pollution is more like second-hand smoke, living in areas with serious air pollution, more like living with people who smoke 2 or 3 packs a day. According to a study conducted by University of California scholar Richard Muller, in 2018, the average air pollution hazard of American residents is equivalent to 1/3 cigarettes per day. Recent studies have shown that breathing in lightly polluted air for 10 years causes the type of lung damage to be the same as smoking a pack of cigarettes a day for 29 years. In order to give people a clearer understanding of the degree of air pollution, two scholars in Paris, France, have developed an APP. This app can be converted into how much cigarettes to smoke based on the degree of air pollution. More and more research shows that from the brain to the bones, air pollution has barely missed any organ.

To alleviate environmental pollution is to let go of human beings.

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Don’t let indoor air pollutants become the longest companionship

Don’t let indoor air pollutants become the longest companionship

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Do you know that people spend 70% of their time in the house? I have escaped the smog and pollution outside, but I can’t hide the indoor pollutant killer. I don’t think it’s too stupid and naive to think that the friends who will stay in the house will not suffer from air pollution! Indoor pollution is smaller?

Seeing the increase in pollution outside, you might say: It doesn’t matter, it is safe to stay at home and not go out. But in fact, according to a 2010 study by the US Environmental Protection Agency, indoor pollution is more harmful than outdoor pollution.

According to the statistics of the World Health Organization (WHO), about 70% of a person’s life will be spent indoors, and the average daily intake of air is 12 cubic meters. Urban residents even spend about 70-90% of their time in various indoor environments. Over. Nearly half of the world’s people are exposed to indoor air pollution every day. In the face of this situation, do you still feel that ‘being indoors’ is safe?

Three types of pollutants in indoor air

In fact, every room space may contain invisible pollution. There are three main types of indoor air pollutants:

  1. Biological pollutants

Biological pollutants are characterized by small size but wide diffusion range and high speed, which can easily lead to allergic reactions such as sneezing, eye discomfort, cough and asthma. Hair and dandruff like pets and humans, pollen, various bacteria and viruses, dust and dust mites, and microorganisms are biological pollutants.

  1. Chemical pollutants

Most of the chemical pollutants come from families with smokers, decoration works, cleaning supplies and furniture. Prolonged exposure can irritate the skin, nerves and respiratory tract, posing a health hazard. For example, second-hand smoke, formaldehyde, benzene, helium, etc., are all chemical pollutants.

  1. Odor

The odor comes from pets, cooking, garbage and the human body. The odor is unpleasant and affects the home life and neighborhood environment.

The harm of indoor pollution is often overlooked by us, but it needs to be concerned and understood!

For ordinary people like us, protecting ourselves and our family is a top priority. Putting our air purifier at home is the most unrequited decision.

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Research shows that air pollution may push up social crime rates

Research shows that air pollution may push up social crime rates

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According to the British ‘Independent’ report, although the pollution problem makes people very dissatisfied with it, its biggest impact is far more than this. Recently, scientists believe that areas with serious pollution are also areas with high crime rates. There is a certain relationship between them. So they studied it. Evan Herhnstadt, a postdoctoral researcher at Harvard University’s Environmental Center, and Erich Muehlegger, an assistant professor at the University of California’s Davis Center, conducted research in Chicago, USA.

Chicago is one of the most polluted cities in the United States, and car exhaust emissions are the primary pollutant. Their research revolves around several important interstate highways in Chicago. First, they obtained more than 2 million criminal records from the Chicago Police Department from 2001 to 2012. These data include the date and place of the crime. Then, they collected meteorological data during this period, including wind direction, wind power, etc., through the change of wind direction to determine which communities in the vicinity suffered the greatest pollution.

Through a comparative analysis of these data, the researchers found that for a community, when it is at the upper vent (meaning lower pollution from the road), it is at the lower estuary of the interstate highway (meaning It suffered from more serious pollution) and the crime rate increased by 2.2%. However, the author points out that this association only applies to violent crimes, such as suicides, shootings, assaults, etc. Pollution has no effect on changes in property crime rates.

They also studied these areas when they were uncontaminated, making scientists the only factor in increasing local crime rates, unlike other traditional factors that affect crime, such as poverty.

They also believe that violent crime is driven by nitrogen oxides rather than carbon monoxide, and is most affected during warm spring and summer. Although the researchers are currently unable to explain exactly why this is, Herrnstadt told the Washington Post that ‘we believe that when you come into contact with heavily polluted air, it will irritate you or otherwise affect your ability to restrain impulses. It causes your cognition to be damaged.’

In addition, serious air pollution can also cause difficulties in the resolution of education, bronchial problems and brain damage.

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