Do books contain formaldehyde?

Many people now wonder whether there is formaldehyde in books when they see some news reports. In this case, they will be very worried. In fact, generally speaking, although books contain formaldehyde, the formaldehyde content is not that high, so it will not cause any harm to your body. So it has nothing to do with it and you can use it with confidence. If the amount exceeds the limit, you must find a way to improve it.

There is formaldehyde in books, and also in the clothes we wear and the furniture we use, there are trace amounts of formaldehyde on them. However, under normal circumstances, the concentration does not reach a level that is harmful to the human body. So it doesn’t matter, don’t worry too much.

1. Ventilation method

Opening windows for ventilation or installing ventilation machines is the simplest, most effective and economical way to remove indoor air pollution. When opening doors and windows to release odors, you must pay attention to the time and method, otherwise it will cause cracks in the wall and affect the decoration effect. When releasing the smell, try to open one or two windows. Do not open all the doors and windows. Excessive air convection will be harmful to the decorated walls. When opening the windows, it is best to do so in the morning or evening, and try to avoid the sunny noon to prevent the walls from cracking due to strong sunlight.

Note: This method is mainly used in places with lighter pollution levels and cannot purify moderate or higher indoor pollution.

2. Physical adsorption

Various air purifiers mainly use the strong adsorption properties of activated carbon to adsorb pollutants such as formaldehyde. Activated carbon can adsorb all harmful gas molecules in the room, and at the same time has properties such as regulating catalysis, inhibiting the spread of epidemic pathogens, and has comprehensive functions such as detoxification, odor absorption, deodorization, dehumidification, mildew prevention, sterilization, and purification. Commonly used adsorbents include porous carbon materials, honeycomb activated carbon, spherical activated carbon, activated carbon fiber, new activated carbon, molecular sieves, zeolites, porous clay minerals, activated alumina and silica gel.

Note: This method is very simple, but you need to remember that the adsorbent needs to be replaced regularly.

The most common indoor plants are aloe vera, spider plant, tiger tail plant, spider plant, and monstera, which can remove harmful substances from the air, especially formaldehyde. Studies have shown that tiger tail plants and spider plants can absorb more than 80% of harmful gases in the room. Aloe vera is also good at absorbing formaldehyde and can absorb 90% of the formaldehyde contained in 1 cubic meter of air. Agave, evergreen, daisy, etc. can also absorb trichloroethylene in the air.

4. How much formaldehyde is acceptable for living in a house?

If you have just purchased a new house, you cannot move in immediately, otherwise there will be formaldehyde in your room. You must reduce the formaldehyde content before you can move in, otherwise it will have a great impact on your body. Also, try to plant a lot of plants in your room. These plants will gradually absorb the formaldehyde in the room.

1. The standard is 0.1, and for children it is 0.08. If you want to test, it is best to wait for half a month after the decoration is completed and the furniture and appliances are installed before testing. Because even if your house is decorated to meet the standards and the formaldehyde emitted by the furniture meets the environmental protection standards, the accumulation of several items will cause the formaldehyde in the home to exceed the standard.

The simplest method is to use plants for testing: Chlorophytum. First, close the doors and windows, and place a pot of Chlorophytum at home. After a week, observe the survival status of the Chlorophytum. If its leaves start to turn yellow from the tip to the inside, it means the formaldehyde content exceeds the standard. If the leaves turn yellow from the center or from the roots, it is dead and you don't need to worry about it. First, the leaves turn yellow from the outside to the inside. If it is a slight light yellow, the formaldehyde exceeds the standard by less than 2 times. If it is light yellow on the outside, then gradually turns dark yellow, and then black on the edges, it is 3-5 times. If the leaves turn yellow directly from the outside to the inside, it is serious and is more than 5 times.

1. It is best not to move into a newly renovated house for the time being, because the first year after the renovation, especially the first half of the year, is a period of strong release of harmful gases such as formaldehyde and benzene; 2. When the indoor formaldehyde content exceeds the national standard by less than 1 times, you can use daily forced ventilation and plant flowers and plants with certain formaldehyde removal ability, such as spider plants, to solve the problem. Another good way is to place activated carbon or bamboo charcoal, but these methods act on harmful gases in the indoor air, not on the pollution source, so they are suitable for situations where the content of harmful gases such as formaldehyde is small; 3. When the indoor formaldehyde content exceeds the national standard by more than 1 times, it is necessary to remove formaldehyde from the source. 1) Recommended index for plant absorption: 2. You can grow plants to absorb harmful gases in the air, or use microorganisms and enzymes to carry out biological oxidation and decomposition. This is also a tip for eliminating decoration pollution. Aspidistra and Monstera can remove harmful substances from the air, while tiger plants and spider plants can absorb more than 20% of harmful gases such as formaldehyde in the room; aloe vera is good at absorbing formaldehyde, while Milan and wintersweet can effectively remove harmful substances such as sulfur dioxide and carbon monoxide from the air; the cilia of plants such as orchids, osmanthus, and wintersweet can intercept and absorb floating particles and smoke in the air. Ivy and cycads can effectively absorb indoor benzene, spider plants can "swallow" indoor formaldehyde and nitrogen peroxide, and araceae can also absorb 40% of benzene and 50% of trichloroethylene. The volatile oils in the scent of flowers such as roses, osmanthus, violets, jasmine, and carnations also have significant bactericidal effects.