07-27

2022

How to distinguish different indoor pollutants?

It was found that many owners would come to consult about smell after indoor decoration. Some have been newly renovated for several months, and some have even been renovated for several years. They can smell "decoration" in the closed room. What is the taste of decoration? How to distinguish different indoor pollutants? 1. Formaldehyde is a colorless, tasteless and irritating gas Formaldehyde is colorless and tasteless in a strict sense, but when the concentration exceeds 3 or 4 times, it will stimulate and damage human mucosal tissues, such as sore throat and inability to open eyes. But this is not the main danger. The main hazard is that formaldehyde rapidly enters the blood through the alveoli through the respiratory tract, causing incalculable harm to the human body.   Formaldehyde mainly comes from artificial wood used as decorative materials, such as adhesives in plywood, core board, medium density fiberboard and creative board (particleboard). So usually, the simple smell we smell is not caused by formaldehyde, even if formaldehyde exceeds the standard by 1-3 times. 2. Benzene is an aromatic gas The smell of benzene is fragrant, and some people feel like the taste of bitter almond. Therefore, many experts call it "fragrance killer", as long as the source of benzene is paint, especially oily paint. Benzene also has other uses, that is, artificial fragrances and essence may contain benzene.   3. TVOC is the general name of organic compounds in the air Usually, the smell you smell when you decorate is TVOC, because it contains eight kinds of organic compounds. However, there are also cases where VOC seriously exceeds the standard, but there is no task odor indoors. The main sources of volatile organic compounds are paints, adhesives, fabrics, textiles, etc., and some of them come from the incomplete combustion of coal or tobacco.   Ammonia is a kind of malodorous gas In our daily life, the smell of ammonia is the smell of fertilizer. Colorless, but highly irritating and smelly. If you live in a city and don't know the smell of fertilizer, you should be exposed to the unpleasant smell of public toilets in summer. Ammonia is mainly used as an antifreeze in cement, usually appearing in the north, but rarely exceeding the standard in the south.   Radon is a colorless and tasteless inert gas Radon gas is formed by radium radiation decay from marble and granite. It is colorless and tasteless. Because it is an inert gas, it will not react with any organic matter. Their presence cannot be distinguished by sight and smell, and they can usually be detected by special institutions.

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