This paper introduces seven methods to detect whether formaldehyde exceeds the standard.
1, judging from the smell in the room
Newly renovated family and office buildings or new buyers have pungent, dazzling and other irritating smells, and the smell lasts for a long time. When you are close to the wall or furniture, there is an obvious pungent smell, and you can basically feel that the formaldehyde in your home exceeds the standard.
2. It can be judged according to the physical condition of yourself or your family.
For example, after moving into a new home, the family members' resistance gets worse, they feel unwell, dizzy, their immunity drops, their illness rate becomes higher, and they feel that their eyes love tears. Under normal circumstances, indoor formaldehyde exceeds the standard.
3. Observe the reactions of animals and plants
If a large number of plants wither and die after moving into a new house, if pets are kept at home, they get sick, don't like to eat or even die, which also means that formaldehyde in the home exceeds the standard.
4, formaldehyde self-test box method
The simplest way to detect whether formaldehyde exceeds the standard is to use formaldehyde detection box, which is also very cheap and simple to operate. The detection box is similar to a PH test paper, and whether formaldehyde exceeds the standard can be roughly estimated by color. In practice, it can be used as a reference for serious pollution exceeding the standard, but it is impossible to make an objective and accurate judgment for general pollution exceeding the standard.
5, electrochemical method-formaldehyde detector
This method is portable, but its disadvantages are different quality, difficult selection and different prices, ranging from 100 yuan to 1 10,000 yuan. In practice, if imported equipment is used, indoor formaldehyde content can be accurately determined.
6, spectrophotometry-indoor air dedicated detector
This method has high accuracy, but the disadvantage is that the price and quality are different, ranging from one hundred yuan to several thousand yuan; In addition, the operation process is complicated, and it is difficult to operate. In practice, indoor air quality can be accurately measured by using high-quality equipment made by institutions and operated by professionals.
7, through professional institutions for testing.
The environmental protection testing of professional institutions is based on the national indoor air quality standards, and indoor air is sampled by professional indoor air quality testing equipment, and then sent to the laboratory for testing and analysis. The result is authoritative. But it is more expensive to hire a professional company.
Small coup to remove formaldehyde
1, activated carbon adsorption method
Activated carbon is an internationally recognized expert on drug abuse. Activated carbon masks and gas masks are made of activated carbon. The product uses the physical function of activated carbon to deodorize and detoxify; No chemical additives, no influence on human body. Put two or three dishes in each room, and 72 hours can basically eliminate indoor odor. This method can be used for medium and low pollution, and can also be combined with other chemical methods, and the comprehensive treatment effect is better.
2. Ventilation method
Through the circulation of indoor air, the content of harmful substances in indoor air can be reduced, thus reducing the harm of such substances to human body. People often close doors and windows in winter, so the indoor and outdoor air can't circulate. Not only the content of formaldehyde in indoor air will increase, but also radon gas will accumulate continuously, even reaching a very high concentration.
3, the soil recruits in addition to formaldehyde
300 grams of black tea is soaked in two basins of hot tea, put it indoors, and open the window for ventilation. Within 48 hours, the indoor formaldehyde content decreased by more than 90%, and the pungent smell was basically eliminated.
4. Plant deodorization method
Plant decontamination can be selected for medium and low pollution: generally, indoor environmental pollution is light and moderate, and the pollution value is less than 3 times of the national standard. Using plants to decontaminate can achieve better results. Choose and place plants according to different functions and areas of the room. Generally speaking, it is more appropriate to put two pots of plants with a height of 10 square meter in a room with a height of10 meter.
5, photocatalyst decomposition method
Stimulated by light, the catalyst in photocatalyst generates negative ions and hydroxyl radicals with oxygen and moisture in the air, which can oxidize and decompose various organic pollutants and inorganic pollutants, and finally degrade them into harmless substances such as carbon dioxide, water and corresponding acids, thus achieving the functions of decomposing pollutants and purifying the air.
Editor's summary: I'm here to introduce how to detect whether formaldehyde exceeds the standard. I suggest that families with children or the elderly should stay after six months of renovation, otherwise there will be safety hazards to their health, which should not be underestimated! If you want to know more about formaldehyde, please continue to pay attention to this website.