The national indoor air formaldehyde standard is 0. 10, and your test result is 0.60, which is 5 times higher than the national standard and seriously polluted! ! ! If your test results are accurate, it will be very serious.
Studies have shown that formaldehyde has a strong carcinogenic and cancer-promoting effect. According to a large number of documents, the effects of formaldehyde on human health are mainly manifested in abnormal smell, irritation, allergy, abnormal lung function, abnormal liver function and abnormal immune function. Its concentration reaches 0.06 per cubic meter of air.
At -0.07 mg/m3, children will have mild asthma. When the formaldehyde content in indoor air is 0. 1 mg/m3, there will be odor and discomfort; Reach 0.5
Mg/m3 can irritate eyes and cause tears; Up to 0.6 mg/m3, which may cause throat discomfort or pain. When the concentration is high, it can cause nausea and vomiting, cough and chest tightness, asthma and even pulmonary edema; Reach the age of 30
Mg/m3, which will cause death immediately.
Long-term exposure to low-dose formaldehyde can cause chronic respiratory diseases, nasopharyngeal carcinoma, colon cancer, brain tumor, menstrual disorder, gene mutation in the nucleus, DNA single-strand cross-linking and DNA-protein cross-linking, inhibition of DNA damage repair, pregnancy syndrome, chromosomal abnormalities in newborns, leukemia, and memory and intelligence decline in adolescents.
Among all the contacts, children and pregnant women are particularly sensitive to formaldehyde, which is more harmful. It is the main pollutant of decoration and furniture. Its release period is as long as 3- 15 years, and it will volatilize from the deep layer of the material when exposed to heat and moisture, which will seriously pollute the environment and become a worldwide problem that is difficult to solve. It is most harmful to the elderly, children and pregnant women.
Hazards: Mild ones include nose and throat discomfort, burning sensation, runny nose, sore throat and cough. Severe cases include chest tightness, dyspnea, headache and upset. Long-term excessive inhalation of formaldehyde can cause many serious diseases such as nasopharyngeal carcinoma and laryngeal cancer.
Where does indoor formaldehyde come from?
1. Various artificial boards (plywood, joinery, medium density fiberboard, particleboard, etc. ) widely used in decoration and furniture.
It is one of the main sources of formaldehyde in indoor air. Most of these wood-based panels use formaldehyde-based adhesives. In particular to an artificial board bonded by a urea-formaldehyde resin adhesive. Such wood-based panels will gradually release a large number of absorbed and retained free formaldehyde during the manufacturing process. It can also lead to leukemia,
Nasal cancer, laryngeal cancer, cardiovascular and cerebrovascular diseases, asthma and other diseases. Formaldehyde gas is more harmful than dust, smoke and sulfide, and it is the only small molecule pollutant that can enter human hematopoietic tissue.
Under some conditions, the cured adhesive layer will also degrade and crack, releasing formaldehyde. Generally, with the increase of ambient temperature and humidity, the amount of formaldehyde released by the adhesive layer will increase. The air quality in the living room is very poor.
So, is wood-based panel the only source of formaldehyde in indoor air? In fact, when people criticize the formaldehyde pollution caused by wood-based panels and their products, they should not ignore other sources of formaldehyde in indoor air.
2. Besides some other decorative materials of wood-based panels, such as wall covering and carpets, formaldehyde will also be released. These materials are also made of adhesives, especially urea-formaldehyde resin adhesives. So there is also a considerable amount of formaldehyde released.
3. Formaldehyde in interior wall coatings and other coatings. Some interior wall coatings and other coatings contain formaldehyde, which will be released when painting, and will also remain in the coatings and be released slowly.