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What aspects can help control indoor air pollution
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2022-07-27 13:34
I believe you must have heard about "PM2.5". With the intensification of air pollution, air quality has attracted more and more attention. When it is serious, everyone will try to avoid going out. But is staying indoors guaranteed to be safe? In fact, indoor air is also affected by various pollutants. If you want to improve indoor air quality, you must first understand the source of pollution.
Three types of pollutants in indoor air
biological pollutants
It is small in size but spreads widely and quickly, which can easily cause allergic reactions such as sneezing, eye discomfort, coughing, and asthma.
• Bacteria, Viruses: large in number and spread rapidly and widely, causing many diseases
• Fungal spores: It is easy to spread and multiply in the air in humid and warm areas, and long-term exposure can easily cause allergies and asthma
• Dust, dust mites: Dust is uncomfortable to breathe and is a breeding ground for dust mites and fungi. Dust mites are small insects that often grow on mattresses, sheets and cloth furniture or are suspended in the air, increasing the chance of asthma
• Pollen: Outdoors and even flowers in vases produce pollen, which can cause obvious discomfort to the respiratory tract, eyes and skin if people with allergies inhale it.
• Pet and human hair and dander: very small, easily entering the human respiratory system, and providing favorable conditions for the reproduction of dust mites and fungi
chemical pollutants
From cigarettes, renovation projects, cleaning supplies and furniture, prolonged contact can irritate the skin, nerves and respiratory tract, and bring health risks.
• Secondhand smoke: It has been identified as a human class A carcinogen by the US Environmental Protection Agency and the International Agency for Research on Cancer. It contains hundreds of toxic substances and carcinogens such as carbon monoxide and formaldehyde. It is especially harmful to children whose lungs are still developing.
• Formaldehyde: Plywood, pressed boards, urea-formaldehyde resin products and floors from everyday furniture are classified as harmful carcinogens. High concentrations of formaldehyde can irritate the eyes, nose and respiratory system, and even cause asthma in severe cases.
• Benzene series: including benzene, toluene, dimethyl, etc., some of which are identified as carcinogens by the World Health Organization. Mainly from various building materials organic solvents, such as paint, coating additives and wallpaper, carpets, synthetic fibers and so on. Long-term exposure can cause chronic poisoning, neurasthenia and hematologic symptoms. In severe cases, aplastic anemia, even leukemia, and death may occur.
• Radon gas: from soil, rock, and granite. Radon gas is colorless, odorless, and difficult to detect. The decay products of radon gas will accumulate in the lungs. It is the second source of lung cancer, ranking second only to smoking.
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