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What are the indoor air pollutants? PM2.5 sensors help improve air quality

Update: 2019-12-25 17:21 Source: LUFTMY Reading: ↻ News

Haze problem makes people pay more and more attention to air pollution and environmental protection. In fact, it is not only outdoor air pollution that endangers our health. We spend more time indoors in our daily work and life. The impact of indoor environment on health is far greater than that of outdoor. So what air pollutants are hidden in the room? Compared with outdoor air pollutants, the components of indoor air pollutants are more complex and their sources are more extensive.

Air pollutant
Air pollutant

1. Tobacco smoke

Some people like to smoke at home. The smoke from tobacco combustion contains a lot of harmful chemicals, such as carbon monoxide, cyanide, volatile nitrosamine, volatile sulfide, cigarette tar, nicotine, lead, etc. The products of tobacco combustion can damage the respiratory, nervous, circulatory, endocrine, reproductive system and immune system. In severe cases, tobacco can also cause cancer.

2. Pet and human hair, dandruff

Human and animal activities and metabolism produce pet and human hair, dandruff, etc. It is very small and easy to enter the human respiratory system, mainly causing allergic diseases, and providing favorable conditions for the reproduction of dust mites and fungi.

3. formaldehyde

All kinds of indoor panel, adhesive, chemical fiber carpet, curtain, wallpaper, foam plastic, paint, paint, disinfectant, printing ink and so on. Formaldehyde is defined as a carcinogen by who. As we all know, long-term exposure to formaldehyde will cause allergic reactions, neurasthenia symptoms, and leukemia, nasopharyngeal carcinoma, colon cancer, brain tumor, etc. in serious cases. Moreover, children and pregnant women are extremely sensitive to formaldehyde, and the harm is even greater.

4. Volatile organic compounds

Outdoor industrial exhaust gas and automobile exhaust gas diffuse to indoor, building materials, decoration materials, household organic chemical products, fuel combustion, lampblack, smoking, etc. Long term inhalation of volatile organic compounds in the air will stimulate the upper respiratory tract and skin; affect the digestive system, appear anorexia, nausea, affect the central nervous system, appear dizziness, headache, weakness, chest distress and other symptoms; and may also lead to local tissue inflammatory reaction, allergic reaction, neurotoxic effect, etc.

5. Benzenes

In the process of interior decoration, organic solvents such as paint, coating, caulking glue and adhesive, building materials such as wood-based panel and plastic plate, and decorative materials such as carpet, chemical fiber curtain, wallpaper and floor leather are used. Benzene has been identified as a highly toxic carcinogen by the international cancer research center. It can stimulate the skin and mucous membrane locally. Inhalation or absorption through the skin can cause poisoning. In severe cases, aplastic anemia or leukemia can occur.

6. Dust mites

When the indoor humidity and ventilation are poor, mites are easy to grow in the mattress, bedding, pillow, carpet, tapestry, curtain, sofa cover and other textile fabrics. Dust mite is the main biological allergen in the room, which can be transmitted into the human body through the air. It is easy to cause allergic asthma, allergic rhinitis and skin allergy due to repeated contact.

7. ammonia

Additives and whitening agents in interior decoration materials, life odor and toilet odor are also important sources of ammonia. Ammonia is a colorless and strongly irritating odor gas, which can stimulate and corrode the upper respiratory tract of human body and weaken the resistance of human body to diseases. Long term exposure to ammonia may lead to skin pigmentation or finger ulcer; after inhalation of a large amount of ammonia in a short period of time, tears, sore throat, hoarseness, cough, bloody sputum, chest distress, dyspnea, dizziness, headache, nausea, vomiting, fatigue and other symptoms may occur, and severe cases may lead to pulmonary edema, adult respiratory distress syndrome and so on.

8. Bacteria, viruses, fungal spores

Bacteria, viruses, fungal spores, etc. enter the room through indoor and outdoor air exchange; they come from garbage and wet mold walls; they are brought in by the infected; the condensers and filters in the air conditioning system are easy to breed bacteria, molds and other microorganisms. It can cause respiratory diseases, allergic asthma and other allergic diseases.

To have good indoor air, pay attention to the following points:

1. According to the investigation, the virus and bacteria in the air can float for more than 30 hours in the room with no air circulation. If the doors and windows are always open for ventilation, the dirty air can float away at any time, and a variety of viruses and bacteria are difficult to breed and reproduce.

2. To clean the environment, it is necessary to clean the family environment thoroughly on a regular basis, especially in the corners, heating boxes, dark corners, and places where bacteria and microorganisms can grow and multiply without leaving dead corners to remove dust and garbage.

3.Do a good job of indoor air purification. It is proved that the choice of air purifier or fresh air system is an effective way to improve the indoor air environment.

Air purifier
Air purifier

LUDTMY PM2.5 sensor built into air purifier or fresh air system

The PM2.5 detection sensor LD15 can continuously collect and calculate the number of suspended particles with different particle sizes in the air per unit volume, that is, particle concentration distribution, and then convert it into mass concentration, and output it in the form of a universal digital interface. Detection LD15 pm2.5 sensor has a small volume of high precision, strong anti-interference ability, low power long life, zero error alarm rate response time is short features, such as the pm2.5 air quality detection sensors can be embedded in a variety of related to the concentration of suspended particles in the air, such as air purifier, air system and other instruments or environment to improve equipment, to provide timely and accurate concentration data.

LD15 Laser dust sensor
LD15 Laser dust sensor

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