As we all know, newly renovated houses are prone to excessive formaldehyde, and formaldehyde is the number one killer that poses the greatest threat to the health of occupants. Many owners have heard the "aldehyde" discoloration and tried to reduce the formaldehyde content in their homes. And in order to effectively reduce the formaldehyde content of houses and harm to people, then Bona Fontaine today to say something about the harm of formaldehyde, formaldehyde have a comprehensive understanding.
Understand the basic knowledge of formaldehyde from scratch
As the saying goes, knowing oneself and knowing each other is not a battle. Only by knowing the "top killer" of formaldehyde, which is harmful to home health, can we take the most effective removal measures against it. Let us first take a look at the basic knowledge of formaldehyde.
First, what is formaldehyde?
Formaldehyde (CH?O) is a colorless, highly irritating gas that is readily soluble in water, alcohols and ethers. Formaldehyde is gaseous at normal temperature, usually in the form of an aqueous solution, and 35 to 40% of the aqueous formaldehyde solution is called formalin.
Second, indoor formaldehyde source
The main sources of formaldehyde in the home air are interior decoration materials, furniture, smoking, fuel burning and cooking. In addition, many daily household consumer products may also release formaldehyde.
As the earliest preservative used by humans, formaldehyde has a wide range of applications due to its highly effective bactericidal effect. In addition, formaldehyde can enhance the wrinkle resistance, waterproof and fireproof performance of the clothes; it can make products such as paper towels, disposable cups and hard plastic plates more tough and more absorbent. Consumer products that use formaldehyde in their lives include milk cartons, newspapers, perfumes, shampoos, lipsticks, toothpastes, fragrances, air fresheners, solvents, bactericides, and the like.
Third, the harm of formaldehyde
1, formaldehyde is the first type of carcinogen
The International Agency for Research on Cancer (IARC) raised formaldehyde to the first class of carcinogens in 2004. The panel believes that there is sufficient evidence that formaldehyde can cause nasopharyngeal, nasal, and sinus cancer in humans, and there is evidence that formaldehyde can cause leukemia.
Formaldehyde has a pungent odor and can be smelled at a low concentration. The olfactory threshold of formaldehyde is usually 0.06 to 0.07 mg/m3. However, there is a large individual difference, and some people can reach 2.66mg/m3. The symptoms caused by formaldehyde may be similar to those caused by the common cold, flu or other indoor air pollutants. If you have similar symptoms, it is recommended to consider whether it is due to excessive formaldehyde in the living environment. Children are the biggest victims of indoor pollution, especially the excessive formaldehyde pollution. There are several reasons. First, the molecular weight of formaldehyde is larger than the average amount of air. Therefore, formaldehyde mainly accumulates in the space within 1 meter of the ground, which is exactly the main breathing zone of children; in addition, when it is quiet, the air intake of children The amount is twice that of an adult, so children inhale more formaldehyde than adults; moreover, children's physical function development is not yet mature, and the resistance is low, so it is the most vulnerable to formaldehyde.
Formaldehyde exists in all aspects of life, and at low concentrations, it is less harmful to humans. However, if the formaldehyde exceeds the standard, it will bring a very big health threat to people, especially children.
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