The air quality of more than 90 households in 198

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More than 90% of 198 households in Changzhou, Jiangsu Province have unqualified air quality

Changzhou, Jiangsu Province 1 the selection of environmental and reliability experimental equipment should comply with the following five basic principles: more than 90% of 98 households have unqualified air quality

August 18, 2008

[China paint information] from January to July this year, Changzhou Institute of product quality supervision and inspection was invited to conduct air quality testing on 198 residential rooms, It was found that the indoor air quality of more than 90% of households was unqualified, of which 30% of households exceeded the standard seriously, and even a dozen households exceeded the standard by more than 10 times. There are also fourorfive cases of habitual abortion or stillbirth of pregnant women

Mr. Xu in Zou District, Wujin, runs a hotel, and his family lives in their own hotel for many years. In order to attract business, the hotel will be newly decorated every few days. In January this year, Mr. Xu came to Changzhou Quality Inspection Institute and asked for air quality inspection of his hotel. It turned out that Mr. Xu's old father was suffering from cancer, and his child was also found to be suffering from leukemia not long ago, one old and one young. Mr. Xu suspected that it was caused by too many harmful substances in the indoor air. After testing, the indoor air quality of Mr. Xu's home is unqualified, and some indicators of harmful substances exceed the standard by more than twice

in recent years, a large number of studies have been carried out on indoor environmental pollution at home and abroad. Hundreds of toxic and harmful substances have been detected, including more than 10 common ones, including radon, formaldehyde, ammonia, benzene, volatile organic compounds (TVOC), free toluene diisocyanate, etc., most of which are organic substances, mainly from various man-made wood coatings, adhesives, treatment agents and other chemical building materials products. Among them, formaldehyde, benzene, ammonia, radon and TVOC are considered to be the five major killers of indoor decoration pollution. Formaldehyde can cause respiratory diseases and various skin diseases. Benzene can cause aplastic anemia, ammonia is highly irritating, and can cause eye, throat, and upper respiratory diseases. Radon can cause cancer. TVOC can cause imbalance in the immune level of the body, affect the function of the central nervous system, affect the digestive system, and even damage the liver and hematopoietic system in serious cases, Allergy, etc

Caoxiangshan, director of the Department of Hematology of the first municipal hospital, said that volatile harmful substances such as formaldehyde and benzene would damage the human blood system and induce leukemia, aplastic anemia, allergic purpura, leukopenia, thrombocytopenia, etc. This kind of damage is divided into two categories. One is dose-related, that is, almost everyone will be exposed to chemicals when the cumulative dose is reached; The other is individual occurrence, that is, people with allergic constitution will have allergic reactions when they are exposed to small doses of chemicals, which is individual specific. Children exposed to the air for a long time have a weak ability to resist external damage, so they are most vulnerable to environmental impact and problems

in an interview yesterday, jiangzhihua, an engineer in the food chemical room of Changzhou Institute of product quality supervision and inspection, said that after home decoration, there will be toxic and harmful substances in the indoor air, which can be improved by the following methods:

1 Plant absorption method. Cactus, Chlorophytum comosum, aloe, Clivia and other plants have a strong ability to absorb formaldehyde, but they must consume the surrounding formaldehyde through photosynthesis, and the absorption efficiency will be very low in the evening and rainy weather. In addition, if the formaldehyde content in the air is too high, it will also cause the death of plants. For example, the scorched leaves of Chlorophytum comosum can indicate that the formaldehyde content in the air is too high. 2. Activated carbon adsorption method. The adsorption effect of activated carbon on free formaldehyde is obvious. It should be noted that the amount of activated carbon should be different according to the size of the space. At the same time, the necessary condition for the adsorption of free formaldehyde by activated carbon is that the surface of activated carbon should be able to contact free formaldehyde. Therefore, it is important for indoor air flow companies to maintain close and stable cooperative relations with many well-known colleges and universities and scientific research institutions in China. 3. Strengthen indoor ventilation. 3.3.2 quality grade benzene and TVOC can basically volatilize after ventilation for two to three months, but formaldehyde can not completely solve the problem only by ventilation because of its long release process

Jiang Zhihua specially pointed out that the decoration of the room is to give people a sense of spaciousness, comfort and value. Therefore, on the basis of practical decoration, pleasant shape and color, we should follow the principle of "cutting the complexity and simplifying", choose environmental protection materials, and avoid excessive decoration

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