VOC decentralized speech

1.

The wine chain world is a hoax

liquor chain world is an ecosystem of liquor value exchange based on blockchain Technology: Liquor F2C direct purchase platform, liquor deep memory advertising distribution platform, liquor digital wealth distribution platform, liquor culture inheritance platform. According to online search, after real name authentication, you can open the wallet function for 1 yuan, and then you can have a cloud brewer to participate in the allocation of the token of the blockchain digital assets

this mode is very risky, and some bar friends in the wine chain world post bar have responded to this problem. Therefore, the wine chain world is a hoax, not credible

2.

To learn oral English well, you must first practice listening. If you can't understand it, you can't speak. There is a software that helps you practice listening. I've been using it all the time. You search ttsuu on the Internet, go to the official website to download ttsuu text to speech software, input any word or sentence (I'm not wrong, any word or sentence is OK), and click the play button to read, The pronunciation is very standard, and you can directly convert any input content into MP3 player and LRC synchronous subtitle, so that you can listen and read at any time on your mobile phone. Especially for the knowledge points to be tested in the exam, this method is very effective and convenient. My English and Japanese are self-taught with this software. Before using this software, my foreign language listening is very poor, which basically belongs to mb English, Because this software has many kinds of pronunciation to choose, but also can adjust the speed and tone at will, so after repeated practice with this software, I now listen to English and Japanese without any difficulty, as long as I know the words, no matter what tone of pronunciation, basically can understand, helped me a lot, hope also can help you, I send a ttsuu MP3, you listen to the effect

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3. **Address:
http://www.skycn.com/soft/98.html
http://dl.pconline.com.cn/html/1/9/dlid=12279&dltypeid=1&pn=0&.html
http://download.pchome.net/multimedia/media/17317.html
http://www.yesure.com/storm/

storm v6.01.28 < br />Address: http://www.skycn.com/soft/98.html

4.

Benzene, toluene, xylene, styrene, trichloroethylene, chloroform, trichloroethane, diisocyanate (TDI), diisocyanate, etc. The specific explanations are as follows:

1, benzene

benzene (C & # 8326; H₆ A hydrocarbon, the simplest aromatic hydrocarbon, is a sweet, flammable, carcinogenic, colorless and transparent liquid with strong aromatic smell at room temperature. It is difficult to dissolve in water, easy to dissolve in organic solvent, and can also be used as organic solvent. The ring system of benzene is called benzene ring. The structure of benzene ring after removing one hydrogen atom is called phenyl, which is expressed by pH. therefore, the chemical formula of benzene can also be written as PHH. Benzene is a basic raw material of petrochemical instry, and its output and proction technology level is one of the symbols of a country's petrochemical development level

on October 27, 2017, the list of carcinogens published by the international agency for research on cancer of the World Health Organization was preliminarily collated and referenced, and benzene was included in the list of class I carcinogens

2, toluene

colorless clear liquid. It has benzene like smell. It has strong refraction. It is miscible with ethanol, ether, acetone, chloroform, carbon disulfide and glacial acetic acid, and very slightly soluble in water. 866. Freezing point - 95 ℃. The boiling point is 110.6 ℃. The refractive index is 1.4967. Flash point (closed cup) 4.4 ℃. Flammable. Vapor can form explosive mixture with air, and the explosion limit is 1.2% - 7.0% (volume). Low toxicity, LD50 (rat, oral) 5000 mg / kg. High concentration gas is anesthetic. It's stimulating

on October 27, 2017, the list of carcinogens published by the international agency for research on cancer of the World Health Organization was preliminarily collated and referenced, and toluene was included in the list of three types of carcinogens

Xylene is a colorless and transparent liquid; Xylene is the proct of two hydrogen substituted by methyl group in benzene ring. There are three isomers, namely o-isomer, m-isomer and p-isomer. In instry, xylene is the mixture of the above isomers

on October 27, 2017, the list of carcinogens published by the international agency for research on cancer of the World Health Organization was preliminarily collated and referenced, and xylene was included in the list of three types of carcinogens

Styrene (C8H8) is an organic compound formed by substituting benzene for a hydrogen atom of ethylene. The electron of vinyl group is conjugated with benzene ring. It is insoluble in water, soluble in ethanol and ether, and graally polymerizes and oxidizes when exposed to air. It is an important monomer of synthetic resin, ion exchange resin and synthetic rubber in instry

on October 27, 2017, the list of carcinogens published by the international agency for research on cancer of the World Health Organization was preliminarily collated and referenced, and styrene was included in the list of class 2B carcinogens

Trichloroethylene, a compound formed by the substitution of three hydrogen atoms in ethylene molecule with chlorine. Insoluble in water, soluble in ethanol, ether, etc. Trichloroethylene is a combustible liquid, which can cause fire and explosion when exposed to open fire and high heat. Trichloroethylene has been used as an analgesic and metal degreaser, as an extractant, bactericide and refrigerant, and as a dry cleaner for clothes. Long term contact can cause trigeminal paralysis and other diseases

on October 27, 2017, the list of carcinogens published by the international agency for research on cancer of the World Health Organization (who) was preliminarily sorted out for reference, and trichloroethylene was included in the list of class I carcinogens. On July 23, 2019, trichloroethylene was listed in the list of toxic and harmful water pollutants (the first batch)

5.

VOC is the abbreviation of volatile organic compounds (VOC)

< H2 > foreign standard

the US Environmental Protection Agency requires that the materials used by automobile manufacturers must be declared, and must be reviewed by the environmental protection department to ensure that the degree of harm to the environment and human body reaches the lowest point before they can be used, The limit of VOC in California proposal 65 is that the content of total volatile organic compounds in indoor air is less than 0.5mg/m3

standard comparison between China, Japan and South Korea

when VOC in indoor environment reaches a certain concentration, it will cause headache, nausea, vomiting, fatigue and other symptoms, and even lead to convulsion, coma, liver, kidney, brain and nervous system injury The common types of VOC are: benzene

toluene

xylene

para dichlorobenzene

ethylbenzene & amp; nbsp;

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styrene (styrene)

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styrene (styrene)

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formaldehyde, acetaketone (methyl)

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nitrobenzene

trichloroethylene

dichloromethane

< / OL >

benzene, toluene, haloolefins (trichloroethylene, dichloroethylene) have been suspected or identified as carcinogens. The main sources of VOCs are chemicals, chemical solvents, automobile exhaust and combustion exhaust

6. 1. Physical adsorption technology is mainly used for removing formaldehyde

in various air purifiers. Some manufacturers in China have proced purifiers, but most of them still proce mechanical filtration, ozone and air anion generator. This kind of procts mainly adsorb suspended solids in the air, and also adsorb indoor formaldehyde and other pollutants

(1) air purifier: it can adsorb indoor formaldehyde and other pollutants

(2) Mayan blue material: with numerous micro pores and weak electricity, it can absorb and lock formaldehyde, toluene and other harmful molecules, and decompose into harmless gases, which is an excellent formaldehyde removal material

(3) harmful gas adsorber and furniture adsorber: they can catalyze the decomposition of indoor formaldehyde and other harmful gases

(4) deodorant and formaldehyde scavenger: used in decoration engineering, it can effectively rece the free formaldehyde in wood-based panels. The most commonly used method is to spray formaldehyde scavenger or formaldehyde scavenger in the indoor air, or use some agents that can immediately remove the odor. These methods can only remove the free formaldehyde, but can't effectively remove the formaldehyde released from the basic wood-based panel. There is also a kind of formaldehyde removal method is to use the principle of sealing, which is directly used on the surface of furniture. After using this formaldehyde scavenger, a transparent or bright white film will be left on the surface of furniture. Although the sealing method has an immediate effect, there will be loopholes after a long time of sealing, which can not fundamentally remove formaldehyde

(5) formaldehyde sealant: it can be applied to the inner wall panel and wood-based panel of furniture without paint treatment to rece formaldehyde emission

2. Catalytic technology for formaldehyde removal

catalytic technology is also known as cold catalyst technology, which is mainly based on multi-component heterogeneous catalysis, combined with ultra-fine filtration, so as to ensure that a variety of harmful odorous gases can be decomposed into harmless and odorless substances at room temperature and atmospheric pressure, from simple physical adsorption to chemical adsorption, and decompose at the same time of adsorption, which improves the quality of adsorbed pollution particles Adsorption efficiency and saturation capacity, no secondary pollution, and the service life of the adsorption material is more than 20 times that of ordinary materials, which has strong pertinence and can catalyze the decomposition of indoor formaldehyde and other harmful gases< At present, some experts have developed a variety of deodorants and formaldehyde scavengers. This kind of procts generally use complexation technology to destroy the molecular structure of formaldehyde, benzene and other harmful gases, neutralize the harmful gases in the air, and then graally remove them, so as to improve the indoor air quality. But we should pay attention to the use of time, good combination of decoration engineering use, can effectively rece the free formaldehyde in wood-based panels< (1) Chlorophytum


characteristics: easy breeding, strong adaptability, it is one of the traditional indoor hanging plants. Its leaves are slender and soft, and small plants emerge from the axils of the leaves. It droops from the basin to the bottom, spreading and drooping. It looks like a flower and is evergreen all the year round

efficacy: it can absorb more than 80% of indoor harmful gases, and has a strong ability to absorb formaldehyde. General room raises 1 ~ 2 basin Chlorophytum, poisonous gas in the air can absorb completely, so Chlorophytum has "green purifier" beautiful name again

(2) Huwei orchid

characteristics: the leaves are clustered, the sword leaves are just upright, the leaves are full margin, and the surface is milky white, light yellow and dark green, showing horizontal stripes. Common family potted varieties, drought resistance, like the sun warm, but also resistant to shade, avoid waterlogging

efficacy: it can absorb more than 80% of indoor harmful gases, and has a strong ability to absorb formaldehyde< (3) Ivy

characteristics: it is an ideal indoor and outdoor vertical greening variety, evergreen vine, with thin and soft branches, aerial roots, and can climb on other objects. The leaves are alternate, and the leaves are triangular ovate. The requirement of potting is increasing. It is a typical shade plant, can grow in full light environment, grow well in warm and humid climate conditions, not cold resistant< Function: remove formaldehyde. It can decompose two kinds of harmful substances, namely formaldehyde existing in carpet, insulation material and plywood, and xylene hidden in wallpaper, which is harmful to kidney< (4) aloe vera L.

characteristics: perennial evergreen succulent plant with short stem nodes, erect, thick leaves, juicy and lanceolate. Like warm, dry climate, cold resistance is not strong, not resistant to shade

efficacy: it is not only good at absorbing formaldehyde, but also has strong medicinal value, such as sterilization and beauty. Now many potted varieties have been developed, with strong ornamental, can be used to decorate the room< (5) agave is a perennial evergreen plant with tall plant, gray green or blue gray leaves, thorny margins and yellow green flowers. Like warm, light environment, drought tolerance is very strong< Efficacy: this plant is also good at absorbing formaldehyde. In addition, it can also be used for wine making. The tequila wine made from it is very famous< (6) Hibiscus officinalis (Gerbera jamesonii)

characteristics: perennial herb of Compositae, with large flower diameter, rich flower color, and often open in four seasons. Like warm, sunny and air circulation environment, is a semi cold resistant flowers, like fertile loose, rich in humus sandy loam

efficacy: this plant is not only good at absorbing formaldehyde, but also has strong ornamental value. Many varieties can be used for cutting flowers< (7) chrysanthemum

characteristics: perennial perennial herb flowers, Chinese traditional varieties. Stem erect or semitendril, pilose and branched. Single leaf alternate, leaf margin serrate, flowers for the head inflorescence, with the top of the stem, flower shape rich, diverse colors< Efficacy: chrysanthemum can decompose two harmful substances, namely formaldehyde in carpet, insulation material and plywood, and xylene hidden in wallpaper, which is harmful to kidney. Not only that, it also has a strong ornamental, potted varieties or land flowers have a lot to choose from. In addition, its petals and rhizomes can also be used as medicine

(8) lvluo

characteristics: Araceae, Camptotheca, belongs to climbing foliage flowers. It likes warm and humid environment. The length of rattan can reach several meters. There are air roots in the internodes. The longer the leaves are, the bigger they are. The leaves are alternate and evergreen. The stems are soft and the leaves are delicate

efficacy: this plant is a good absorption of formaldehyde, and has a high ornamental value. The vine naturally droops, which can not only purify the air, but also make full use of the space, adding lively lines and bright colors to the rigid cabinet.

7. Sweden VOC fingerprint lock, the lock cylinder is C level, insert the real lock cylinder! At present, almost all imported brands and leading brands in the market use this kind of lock cylinder, which has good concealment. Anti technical opening! Only a few domestic manufacturers often use the so-called "real insert" to publicize. At present, the real insert lock cylinder is used on the anti-theft door!

8. VOC mainly comes from fuel combustion and transportation; Indoor smoke mainly comes from combustion procts such as coal and natural gas, smoke from smoking, heating and cooking, and emissions from building and decoration materials, furniture, household appliances, detergents and human body itself. Now people are in the car on their way to work. If they don't take proper protective measures ring this period, they are all injured by VOC. The car's air conditioning filter is used to stop exhaust, but it's the key to find a really effective filter, otherwise it's bullshit. Recently, there is a very popular one called easy filter. I find it incredible that the trial post can rece PM2.5 to 0 on Netease. No matter whether it's true or not, I have to buy one when I'm free. If it's effective, I'll buy it.

9.

VOC is the abbreviation of volatile organic compounds. VOC in the common sense is the command of volatile organic matter; However, the definition in the sense of environmental protection refers to the active volatile organic compounds, that is, the harmful volatile organic compounds

in decoration, it generally refers to formaldehyde, benzene, ammonia and other harmful organic gas particles. Coatings will basically release the above substances, so the reason why a well decorated house can't be moved in immediately is that it needs to carry out effective purification of indoor air. The methods are as follows: < P >

1. keep indoor ventilation for more than three months, VOC release is a long-term, generally half a year, So after the ventilation treatment in the early stage, we should always keep the indoor ventilation, so that VOC will not be trapped, causing physical harm

2. put some nanojie natural nano silicon in the room, the effect of odor removal and formaldehyde removal is five times stronger than that of activated carbon, and it can be done in about a month. On a treasure, the nano structure can well absorb all kinds of VOC harmful substances, and it is not easy to proce secondary pollution, It will not cause allergic effect on the people with low immunity of children, the elderly and pregnant women

4. planting some plants such as Chlorophytum, aloe, tequila at home can also have certain effect on formaldehyde removal, which is the best choice for long-term maintenance of indoor air freshness and beautification of the environment

< / OL >

the above methods can be used at the same time without interference, The effect can be superimposed


I hope my answer can help you