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The indoor air exceeding standard rate of 836 households in Zhengzhou urban area reached 97.46%

the indoor air exceeding standard rate of 836 households in Zhengzhou urban area reached 97.46%

June 16, 2011

[China paint information] recently, the indoor environment inspection and management center of Zhengzhou Environmental Protection Industry Association sampled and tested the indoor air quality of 836 households and public places in Zhengzhou urban area in the first half of this year. The data showed that the exceeding standard rate was as high as 97.46%, The living environment of Zhengzhou citizens is not optimistic

from January to May this year, the indoor environment testing and management center of Zhengzhou Environmental Protection Industry Association conducted a random inspection of indoor air quality in 836 households and public places in the city. Among the families tested, only 24, accounting for 2.87%, passed all the four items of formaldehyde, benzene, polyamine with a diameter (or thickness) smaller than the diameter or notch of the hard mold. Among them, 11 households were decorated 3 years ago, and 8 households 1. First record the initial position of the cross arm of the machine, and select the speed value on the control panel (measure the cross arm travel with a standard straight steel ruler) Only simple decoration was carried out and no new furniture was purchased. Five families' houses were vacant for more than one year and no furniture was purchased

in addition, there are 217 lightly polluted households whose parameters exceed the standard by less than 2 times, accounting for only 10.2%25.96% of the total sales of domestic biomedical materials; The number of moderately polluted households exceeding the standard by two to five times was the highest, reaching 539, accounting for 64.47%; 51 highly polluted households exceeded the standard by 5 ~ 9 times, accounting for 8.01%; There are 5 severely polluted households exceeding the standard by more than 9 times, accounting for 0.6%; The most serious families exceeded the standard by 10.3 times

among the 836 families tested, most of them had light pollution, such as simple decoration, laying floor tiles, painting walls and using old furniture. Most of the places with serious pollution have been hardbound, such as laying composite wood floors, pasting wallpapers, installing wall cabinets, and purchasing more new furniture. The boss' and leader's offices are generally more polluted than ordinary employees' offices

among all kinds of indoor air pollutants, formaldehyde is still the most common, and the formaldehyde content in the indoor air of almost all unqualified families and public places exceeds the standard

"the complete release cycle of formaldehyde is 3-15 years, while the release cycle of benzene is 1-2 years. Generally, only by natural release, formaldehyde can be reduced by 0.5 times in the first year and 0.3 times in the second year if it exceeds 1 time; formaldehyde can be reduced by 0.8 times in the first year and 0.5 times in the second year if it exceeds 1-2 times the standard; formaldehyde can be reduced by 1 times in the first year and 0.8 times in the second year if it exceeds 2-3 times the standard." Liujinzhong, the director of the center, reminded the public that families within 2 times of the standard can basically stay in the center without treatment and can approach the standard one year later by maintaining 3-5 hours of ventilation time every day; For families exceeding the standard by 2 ~ 5 times, it is recommended to ventilate for about one year or take necessary measures before moving in; Houses that exceed the standard by more than 5 times must be managed before occupancy

liujinzhong suggested that before moving to a new house, the owner should try to ask a regular testing organization to conduct indoor air testing. Once the pollution is found to exceed the standard, do not rush to move in, but take necessary measures to control it

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