Background and current situation of indoor environmental pollution
The health problems caused by indoor air pollution have become a health threat together with traditional diseases such as high, obesity and high cholesterol. According to a survey of air pollution, nearly 30% will induce respiratory diseases, 20% will produce different types of chronic diseases, some will have tracheal and bronchial verification, and severe will be replaced with cancer. The problem of indoor air pollution can not be underestimated.
Indoor environmental pollution is serious
In recent years, China has successively formulated a series of standards for indoor environment, from the use of building decoration materials to the limitation of pollutant content in indoor air, to strictly monitor the indoor environment to ensure the health of the people. Therefore, people often think that the living conditions of modernization are constantly improving, and indoor environmental pollution has been controlled. In fact, people’s harm to indoor environmental pollution is far from enough.
It should be noted that at the same time of rapid economic development, indoor environmental pollution caused by construction, decoration and furniture has become a major killer affecting people’s health. According to the data provided by the China Indoor Environmental Monitoring Center, the annual number of deaths caused by indoor air pollution can reach 111,000, the number of over-examinations can reach 220,000, and the number of over-exposures can reach 4.3 million. Severe indoor environmental pollution not only caused people’s health losses, but also caused huge economic losses. In 1995, the economic losses caused by indoor environmental pollution in China were as high as 10.7 billion US dollars.
From the current analysis and analysis, the main sources of indoor air pollutants are as follows: construction and interior decoration materials, outdoor pollutants, combustion products and human activities. The pollution of interior decoration materials and furniture is currently the main aspect of indoor air pollution. The National Health, Construction and Environmental Protection Department conducted a spot check on interior decoration materials and found that 68% of the materials with toxic gas pollution, these decorative materials will evaporate more than 300 volatile organic compounds. Among them, formaldehyde, ammonia, benzene, toluene, xylene, volatile organic compounds and radioactive gases, etc., can cause headache, nausea, vomiting, convulsions, difficulty breathing, etc. after repeated exposure. Repeated exposure can cause allergic reactions such as asthma and allergies. Prolonged exposure to rhinitis and dermatitis can lead to cancer (lung cancer, leukemia or abortion, fetal malformation and growth retardation).
Experts have found that the use of materials containing harmful substances in the home decoration will increase the degree of indoor pollution, which has a greater impact on children and women. Relevant statistics show that there are about 2.1 million children who die from upper respiratory tract infections each year in China, and the deaths of more than 1 million children are directly or indirectly related to indoor air pollution, especially some newly built and newly renovated kindergartens and home indoor environments. The pollution is very serious.
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