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Six Misunderstandings Of Air Polution
Oct 09, 2018

Indoor air  pollution refers to the presence of substances harmful to human health  in the air in an enclosed space and the concentration has exceeded the  national standards to the extent that it is harmful to people's health. We collectively refer to such phenomena as indoor air pollution.

Misunderstanding 1

Does the blue sky mean good indoor air quality?

The outdoor air quality doesn't indicate the indoor air quality. For example, there are blue sky and white clouds outdoor but the indoor air quality is not good as outdoor too. From the fireplace smoke from the Western court to the PM2.5, which is now  widely concerned, in fact, indoor air is affected by smoking, cooking,  decoration, pets, etc., and it contains PM2.5 concentration, harmful  chemicals, and bacterial viruses. No harmful gases, etc. are less than outdoor.

Outdoor  blue sky and white clouds, pollutants are reduced, and many indoor pollutants such as second-hand smoke and oil smoke will not decrease  with the change of weather. Therefore, indoor air pollution must be taken seriously.


Misunderstanding 2

Do the Harmful gases all come from renovations?

In  fact, there are many sources of harmful gases of indoor pollution,  including physical, chemical and biological pollution. Even undecorated  houses may have serious air pollution.

For example, the concentration of fine particles released by printers in the  office is equivalent to that of second-hand smoke, which can increase  indoor air pollution by 5 times; indoor showers and humidified air will  produce chemical pollutants such as halogenated hydrocarbons; coughing  and sneezing will spray influenza virus, Biological  contaminants such as Mycobacterium tuberculosis and streptococcus;  indoor equipment such as dust mites and dander in bed mattresses and  carpets are all causes of indoor pollution.


Misunderstanding 3

Is there no air pollution if our house without bad smell?

In general, toxic and harmful gases are usually colorless and odorless. If  the suffocating gas is invisible and insultable, even in the extremely  high concentration of strontium, people have no feeling. Some are toxic and harmful gases and even aromatic, such as benzene.

The complex odors of various chemicals mixed together are difficult to distinguish. Therefore, it is not correct to judge whether there is air  pollution by smell. If there is no smell, it cannot be said that  pollution does not exist.


Misunderstanding 4

Can it eliminate indoor air pollution if we open the window?

In the case of good outdoor air condition and good ventilation conditions,  long-term ventilation has a positive effect on removing odor and  pollutants, but considering the drawbacks of window ventilation, the  feasibility of this measure is low.

Drawbacks of open the window to ventilation:

Ventilation is not controllable;

Waste of resources (window ventilation, energy loss, such as when heating or  air conditioning); outdoor noise pollution; opening the window can not  prevent sand and dust from entering the room; rainy days drifting into  the following rainy days; No one has hidden dangers of indoor safety (anti-theft performance); high-rise building windows have hidden dangers to children.

The harmful gases such as formaldehyde and benzene should be exposed to  more than four times the normal wind speed. The harmful gas contained in  the furniture sheet has a long incubation period, and the ventilation  often fails to cure the symptoms. In the case of poor outdoor air  quality, it may bring other Contaminants.


Misunderstanding 5

Multi-plants can remove air pollution?

Even plants with higher tolerance are not as fast as they are. For  example, 1 m2 of spider plant leaves treat 0.15 mg of formaldehyde per  hour, while usually one plant has less than 0.1 m2 of leaf area, which  means that the total amount of formaldehyde that can be treated in one  day is only 0.36 mg.

In a 100m2, 3m floor living  room, it is necessary to remove formaldehyde with a concentration of  0.5mg/m3. This plant has to work hard for hundreds of days. It can be seen that the purification rate of green plants is slow and the time is long, and the effect is limited.


Misunderstanding 6

Do not pay attention to the pollutants brought by pets

Although  pets are cute, pets such as cats and dogs that are raised indoors can  multiply microorganisms such as bacteria, viruses, fungi, spores, molds,  and mites. In homes where carpets are laid, biological pollution such as bacterial growth and dust mite will become more serious.

At present, China has found that bacteria, bacteria, parasites, etc. carried by pets can cause pneumonia and endocarditis. Paying  attention to and taking measures to eliminate such pollution can ensure  the health of pets and family members, help people and animals live in  harmony, and provide a warm environment for families.