Control several pollutants during decoration

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Benzene is a colorless gas with special fragrance, which has been identified as a strong carcinogen by the World Health Organization. Benzene is a major inducement for the increase of childhood leukemia patients in recent years. According to the survey data, 90% of urban children with leukemia have had interior decoration within a year. When people inhale high concentrations of benzene in a short time, they will have central nervous system anesthesia, and light people will have dizziness and dizziness

with the rapid development of China's economy, people's economic income and consumption expenditure are also growing rapidly, their living standards and quality of life have been greatly improved, and their desire and expectation to improve their work, life and living environment have become increasingly strong. I hope to have a comfortable, clean, modern and fashionable working and living space. Therefore, in recent years, the standard and grade of house decoration have been continuously improved and showing an upward trend

1 main types and sources of pollutants

indoor environmental pollutants are mainly caused by the pollution of outdoor atmospheric and geological environment, the pollution of indoor building decoration materials and furniture releases, the pollution of cooking and combustion products, the metabolism of human body and the pollution of volatile components of various domestic wastes. After the project is completed and put into use, the indoor environmental pollution caused by various activities of people and the destruction of outdoor atmospheric environment cannot be controlled during the construction stage of the project. Through the analysis and research of experts and scholars. At present, hundreds of toxic and harmful substances have been detected, and about 68% of human diseases are related to indoor pollution, especially radon, free formaldehyde, ammonia, benzene, total volatile organic compounds (TVOC) and other pollutants, which are most harmful to human beings and are often detected. According to relevant reports, radon and benzene compounds have broken the World Health Organization (who) as strong carcinogens, and formaldehyde has been identified by who as suspected carcinogens and teratogens. Therefore, this paper lists these pollutants as the control objects

1.1 radon

radon is produced by the decay of the radioactive element radium, which is colorless and tasteless. Radioactive inert gas. And it is the only natural radioactive gas in nature. It exists in all kinds of ores, rocks and soils in nature. It is often released during mining and construction, and can be inhaled by the human body in combination with the dust in the air. If people live in an environment with high radon concentration for a long time. Radon deposited in the epithelial tissue of the respiratory tract produces strong internal radiation to the human body. It will increase the probability of inducing lung cancer and other diseases and endanger human health. 80 ~ 90% of the radon in the indoor air comes from the foundation soil and rocks, especially in the geological structure fracture zone. The second is the radon emitted from the building decoration materials used in the project, especially the building materials mixed with industrial waste and natural granite

1.2 methylbenzene

formaldehyde is a colorless and soluble irritant gas. It has strong stimulation and allergic reactions to human vision, smell and respiratory organs, causing tears, cough, asthma and other symptoms, which can seriously lead to abnormal lung function, liver function and immune function. There are four main sources of indoor free formaldehyde: ① plywood, joinery board, medium density fiberboard, particleboard and other artificial boards used for interior decoration; ② Widely used water-based adhesives such as urea formaldehyde resin with formaldehyde as the main component; ③ All kinds of fire retardants, water proofing agents, preservatives, insect proofing agents and other water-based treatment agents used for fire prevention, corrosion prevention and insect proofing of building decoration materials; ④ From other decorative materials that contain formaldehyde and may be distributed to the outside world Such as wallpaper, chemical fiber carpet, floor liner, foam plastic, water-based paint and coating, etc

1.3 benzene

benzene is a colorless liquid with special aromatic smell, which is volatile and flammable, and has local irritation to human skin and mucosa. Long term exposure to certain concentrations of benzene compounds can cause chronic poisoning. It is manifested by dizziness, insomnia, listlessness, memory loss, thinking and judgment reduction and other symptoms. In serious cases, it will cause damage to the human hematopoietic system and nervous system. At present, benzene and its homologues toluene and xylene are still widely used in interior decoration as solvents, diluents or additives for various solvent adhesives, paints, coatings and waterproof materials





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