I believe that many people have bought the grapefruit and then eat the flesh. The grapefruit skin is left to be placed in the home to remove formaldehyde. However, a recent CCTV program "Is it true?" found that using grapefruit peel to remove formaldehyde is not reliable, not only can not remove formaldehyde, but also increase the indoor formaldehyde content. This has caught many people off guard. And when formaldehyde pollution enters the “high-risk periodâ€, looking for a most reliable way to remove formaldehyde is in front of many families who have just finished renovation.
â—†Summer formaldehyde high hair mat is also "shot"
Because of the rising temperature, pollutants are discharged at high temperatures, and summer has become a high incidence of formaldehyde pollution. Just recently, the Beijing Municipal Administration of Industry and Commerce found that there were over-standard formaldehyde in 13 batches of mats, including the Meng Tianzi brand breathable health mat of Jiangsu Mingchao International Trade Co., Ltd. and the two double guns of Zhejiang Double Gun Bamboo Co., Ltd. The mats are all on the black list, which makes the summer more "injury".
“Summer has always been the peak of indoor air testing by consumers, which is about half of the amount detected in winter. Among them, 70% of the air tests were conducted before the end of the renovation, and 30% found that the new house had a pungent taste after check-in. Even after causing physical discomfort, I went to the door to check the formaldehyde content," said Mr. Zhou, the head of an indoor environmental management company in Nanjing. In all households that tested, at least half of the formaldehyde and TVOC were not up to standard. In fact, even if the single item testing of building materials meets the national environmental protection standards, the use of too much, the quantity becomes a qualitative change, which will lead to excessive indoor air pollutants.
â—†Pomelo peel and vinegar can not absorb formaldehyde
Because of the high incidence of formaldehyde, some of the "soil method" in addition to formaldehyde has been used by many people as a collection, one of which is grapefruit skin.
Since the grapefruit skin is a pore-like structure, many people have long been confident that it can absorb formaldehyde. However, in a recent experiment, the experimenter put a formaldehyde release source into two closed compartments, and the formaldehyde concentration was five times that of the national standard. Then, in one of the closed compartments, a half-pound of grapefruit peel was placed, and the other did not contain anything. After 24 hours, the experimenter found that the formaldehyde concentration in the closed compartment without any contents was 0.16 mg/m3, while the formaldehyde concentration in the closed compartment with the pomelo peel was 1.59 mg/m3. Originally, because grapefruit skin contains a lot of water, the evaporation of water into the air will increase the humidity of the air, and the increase of air humidity will increase the release of formaldehyde.
"In addition to grapefruit skin, pineapple, onion, vinegar, etc. can only cover up the taste of formaldehyde, and can not absorb formaldehyde." Mr. Zhou said.
â—† Green plant activated carbon has a role but the most ventilation
According to Mr. Zhou, the current way for the public to remove formaldehyde is to place green plants at home. These plants include spider orchids, tiger-tail orchids, and ivy. In addition, the activated carbon package also has the function of adsorbing formaldehyde, but the activated carbon will release the adsorbed formaldehyde to a certain extent, so it is best to expose it to outdoor exposure for at least two hours after being placed indoors for about one day, so that activated carbon can be used. Repeated use.
"However, these two methods are auxiliary means, and the effect can not be immediately seen." Mr. Zhou said that window ventilation is the most effective means of removing formaldehyde. In recent years, there have been many products on the market that are rapidly undergoing indoor air treatment. The price is based on the concentration and area of ​​indoor formaldehyde exceeding the standard, and the price ranges from several hundred yuan to several thousand yuan. "According to the current development of the industry, some products and management methods have a very good effect, but such products are mixed, consumers must carefully distinguish. For example, many products are effective for treating indoor formaldehyde, but a room of formaldehyde exceeds 10 times, some The product can be removed, the indoor air is still over standard, and it is still unsafe. In addition, many products for removing formaldehyde have appeared on the market. Some products contain harmful substances such as ammonia and chlorine dioxide, which will cause secondary pollution.
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