Personally, I am a technician in the Radiation Department of the Environmental Protection Agency. I am often entrusted by my family to monitor marble radiation and worry that marble is harmful to children. Among them, marble has the longest service life until 12. Through several years of monitoring, we found that the radiation of marble to human body is not harmful to human body, not as serious as those health programs said. Because everything is radioactive, but it is far from the national standard.
If you look up the hazards of marble on the Internet, you will find that there are many kinds, such as radon. Radon is a colorless, odorless and imperceptible inert gas. Building materials such as cement, brick brakes, marble and ceramic tiles are the main sources of radon, and geological fault zones will also release a large amount of radon. Radon and its daughters enter the human body with air, or attach to tracheal mucosa and lung surface, or dissolve in body fluids and enter cell tissues, forming internal radiation, which induces lung cancer, leukemia and respiratory diseases. Research by the World Health Organization shows that radon is second only to smoking.
The above passage was found on the internet to describe the harm of radon. People who don't know will be scary at first sight. In fact, what more people don't know is that radon must be produced in houses, especially old houses. Radon gas is not produced by marble. It's just far from the standard of harm to human body. In our monitoring for several years, we found that the radiation of marble is generally below13 μ Gy/ h/h. In the data of environmental monitoring, you will find that the radiation below 20μGy/h (micro gy/h) does not need to consider the harm. If it reaches 20, it is necessary to analyze the reason by spectrometer. If it is K, there is no need to worry, because after K decays, it will produce γ and β rays, which belong to external irradiation. They have more relaxed standards for the harm of radiation to human body, so there is no need to worry at all. Only radium is harmful. It is believed that radium decays into α, producing radon gas, and then lead. Radium has a complete decay connection, and any process is harmful to human body, but we have not found this situation yet, not to mention the national standard time is less than 25. The laboratories in our unit are all marble floors. Artificial marble is less harmful to human body than natural marble.
Remind that everything has radiation, no matter what it is produced, it will be harmful if it reaches a standard, just like any food has bacteria, and it will be harmful to the human body if it reaches a standard.
If you are in doubt about the harm of marble, I suggest that you often open the window for air, or entrust the environmental protection department to monitor it, which will probably cost less than 1300 RMB.
As for how long the radiation lasts, there is no timeliness, because any object will radiate outward. For example, the half-life of radium is 1600 years.
Be afraid of what people say, don't scare people.
There are many things circulating on the Internet, such as electric mattresses and cell phone radiation. Don't worry too much because the radiation of the electric mattress is very low (as long as there is electricity, there is electromagnetic field, so there is electromagnetic radiation. ), and it is said that when the electromagnetic radiation of the mobile phone is as high as 2000mGs (milligauss), 10- 150 mGs, the tumor suppressor gene R53 in the body can get sick, and so on. Don't believe it. This is purely a rumor. In this way, mobile phones are more poisonous than poison. The radiation at the moment when the mobile phone is connected is 5-6V/m (I won't say the specific meaning, because it is of little use to you. ), and the national standard is below 13v/m, and some of them are copied from some uncertain information searched online. Most of them are hype to promote a series of so-called instruments such as electromagnetic radiation tester, radiation tester and environmental tester. Online prices are in the tens of thousands, and these are made of simple structures, but the cost is only 180%. The real electromagnetic radiation tester needs about 200,000-300,000 yuan, and all of them are imported.
I hope my answer will help you, and remind you that the radiation of artificial marble is far lower than that of natural marble.
Does artificial stone have radiation?
Occasionally. Because stone includes natural and man-made, the key man-made parts depend on what materials are used. If the material itself has high radiation, there is no way out. This radioactivity is Grade A, Grade B, Grade C and Grade A. There is no problem. Grade B must be used outdoors, Grade C is used in rivers and other places, and Grade A is rarely used. Use with caution, because it will also produce a small amount of radiation.
Does artificial marble have radiation?
Any stone has radiation, and artificial marble is also made of unprocessed stone powder, so there is radiation. The amount of radiation depends on the amount of radiation of raw materials, so if you are worried about this, you'd better not use artificial marble.
Other reference materials:
Regarding the radioactivity of marble, experts from the Institute of Standardization of the National Building Materials Bureau believe that natural radioactivity exists objectively in nature, and similarly, radioactivity also exists in natural stone products. The key is to see if it exceeds the national standard. Marble is formed by the metamorphism of limestone in sedimentary rocks affected by external factors such as temperature and high pressure. Because calcite and dolomite are generally low in radioactivity, marble metamorphic from low-radioactivity limestone is also low in radioactivity. Conclusion: Natural marble has low radioactivity and can be used safely. Myth 2: Marble is not as radioactive as other building materials. According to experts, radioactivity exists in all substances, including water and air. Nightlight watches, televisions and computer monitor screens, which we can't live without, are all radioactive to some extent, but they are all trace, which is harmless to human body, or harmless. Radioactivity is not surprising, so there is no need to panic. Similarly, natural marble is radioactive, and the most important thing is whether the marble you bought exceeds the standard. Where is the marble decoration you need? In the Control Standard for Radiological Health Protection of Natural Stone Products, stone building materials are divided into three categories according to the specific activity of radioactivity: Class A: unlimited scope of use; Class B: it can not be used for living room and interior decoration, but can be used for indoor and outdoor decoration of other buildings; Class C: It can be used as the exterior wall decoration of all buildings. Experts from Beijing Institute of Geology of the nuclear industry said that when purchasing stone decorative materials, consumers must check the "CMA Radioactive Analysis and Testing Certificate" certified by the State Bureau of Technical Supervision and the scope of application of the products. Because of the uneven radioactivity of stone, the content of radionuclide in different lithofacies zones of the same rock mass will be very different, so it is difficult to generalize by sampling inspection. Conclusion: It is best to choose Grade A stone for indoor use, and each variety should have corresponding inspection report. Myth 3: Artificial marble is not radioactive. Artificial marble or artificial stone is made of natural marble, sometimes granite as filler and cement, gypsum and unsaturated polyester resin as binder through stirring, molding, grinding and polishing. This kind of stone should pay attention to the possibility of high radioactivity and harmful gases. To buy this kind of stone, you should also ask the merchants for relevant indicators to prove it. For the overall evaluation of indoor harmful substances, we must find a formal institution with "CMA National Radioactive Analysis and Testing Qualification Certificate" issued by the State Bureau of Technical Supervision and "Grade A Certificate of Environmental Impact Assessment" issued by the State Environmental Protection Agency. Conclusion: Artificial marble should also be tested to see if it meets the standard.
What's the difference between artificial marble and natural marble? Is that radiation big?
The difference between artificial marble and natural marble
1. Natural stone
There are two main natural stones: marble and granite. Generally speaking, anything with texture is called "marble"; Mainly spotted, it is called "granite". This is a broad sense. In a narrow sense, marble refers to the stone produced in Dali, Yunnan. In fact, few stones in all parts of the country belong to Dali now.
The two can also be distinguished from the geological concept. Granite is igneous rock, also known as acid crystalline plutonic rock, and it is the most widely distributed rock among igneous rocks. It is composed of feldspar, quartz and mica, and the rock is hard and dense. Its composition is mainly silicon dioxide, accounting for about 65%-75%.
Igneous rock is the rock formed by the condensation and crystallization of underground magma or volcanic lava. The content of silica in igneous rocks and the nature and content of feldspar determine the properties of stones. When the content of silica is more than 65%, it belongs to acidic rocks. When orthoclase, plagioclase and syenite form crystals, they are in a material structure, which is called granite.
Marble is a metamorphic rock formed by high temperature and high pressure in the earth's crust. The internal force of the crust promotes the qualitative change of the original rock, that is, the structure, structure and mineral composition of the original rock change. The new rocks formed by qualitative change are called metamorphic rocks.
Marble is mainly composed of calcite, limestone, serpentine and dolomite. Its main component is calcium carbonate, accounting for more than 50%. Because marble generally contains impurities, calcium carbonate is easily weathered and dissolved by carbon dioxide, carbide and water vapor in the atmosphere, and the surface quickly loses its luster. Marble is generally soft, which is relative to granite.
Because there are pores on the surface of natural stone, its anti-pollution ability is relatively poor, so its surface is generally treated in a processing plant. In interior decoration, marble is suitable for TV cabinets, window sills and indoor floors. Threshold, cabinet table and outdoor floor are suitable for granite. Among them, dark granite is the best countertop.
Some of the natural stones on the market now are artificially treated, and their true colors will be revealed after half a year to one year. But it is obvious that many of the flowers and greens on the market are dyed, not real primary colors.
Also pay attention to the grid on the back. There are two situations: ① the stone itself is brittle, and it must be grid-shaped, such as Spanish beige. (2) Jerry-building, the thickness of these stones became thinner and the strength was not enough, so the net was added. Generally, if the stones with darker colors have style, this is probably the reason.
2. Artificial stone
Artificial stone is made of unsaturated polyester resin as binder, natural marble or calcite, dolomite, silica sand, glass powder and other inorganic powders, as well as a proper amount of flame retardant and colorant. It is molded and solidified by mixing ingredients, porcelain casting, vibration compression and extrusion. Artificial stone is based on the problems existing in the actual use of natural stone, and has made great progress in moisture-proof, acid-proof, high temperature resistance, flat-fell seam and so on. Of course, man-made things naturally have man-made shortcomings. Artificial stones obviously lack a sense of nature and have a fake texture, so they are often used in places with high practical requirements such as cabinets and some places with harsh environments, such as kitchens and bathrooms. Window sills, floors and other places that emphasize decoration are used less.
Another factor that hinders the use of artificial stones is the human factor. Because the manufacturing process of artificial stone is very different, and the efficacy and characteristics are not exactly the same, the advantages mentioned above are not necessarily the efficacy of the artificial stone you bought. At present, the efficiency of artificial stone imported from the market is still relatively good. For example, the scratches on the surface of imported marble are allowed to be polished by sandpaper, so it is no longer obvious for users to handle them themselves. However, many domestic artificial stones obviously cannot support this kind of talent flow, and the more polished they are, the worse they get.
Of course, natural marble has great radiation! Most natural stones contain small doses of radioactive substances, which generally do not endanger human health. Natural stone can be divided into three categories according to radium equivalent concentration: A, B and C. Among them, the use of Class A products is not restricted, Class B products can not be used for interior decoration, but can be used for interior and exterior decoration of all other buildings, and Class C products can only be used for exterior decoration of buildings. Therefore, you should choose A-grade products for home decoration, and don't forget to ask for radioactive inspection certificates when buying stone products.
Artificial stone is popular now, which is processed from natural stone. ......
Does artificial marble have radiation?
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It radiates natural marble.
All natural marble has radiation.
Artificial marble eliminates these when it is manufactured.
Does artificial marble have radiation?
As a very important decorative material, artificial marble has been widely used in the decorative industry. In daily life, artificial marble countertops, dining tables and chairs are made of crushed stones of natural marble or granite as fillers and cement, gypsum and unsaturated polyester resin as adhesives through stirring, molding, grinding and polishing. This is a topic that many people care about. Let me introduce you! Marble furniture not only requires the firmness and environmental protection of the board, but also strictly controls the radioactivity of the stone. For a long time, people mistakenly believe that marble and furniture will have radiation, so it is inevitable that there will be some concerns when buying. In fact, the radioactivity of natural marble is very low and will not cause harm to human body, while the high radioactivity is artificial marble furniture. In general, the darker the marble, the greater the radiation. Artificial marble is usually made of natural marble or granite gravel as filler and cement, gypsum and unsaturated polyester resin as binder through stirring, molding, grinding and polishing. Therefore, artificial marble has many characteristics of natural marble. For example, because it can be adjusted manually, it has various colors, good flexibility, inconspicuous joint treatment, very strong sense of integrity, bright colors, ceramic luster, high external hardness, difficult damage and corrosion resistance. But it also has a big disadvantage, which is very harmful to human body. Because artificial marble is artificial, there are many uncontrollable factors. In order to reduce the cost, some manufacturers use inferior materials, smear harmful substances such as formaldehyde and benzene in the manufacturing process, and some even directly add organic solvents and use inferior materials of heavy metals to produce a large number of "toxic marble". The harm of artificial marble is mainly manifested in the pollution caused by inferior materials. Generally, this kind of board has the same characteristics, with pungent chemical smell and unnatural color, which will cause great harm to human body. Formaldehyde and benzene will volatilize for a long time in the future, which will do great harm to human body. At the same time, inferior artificial marble is not only harmful to human body, but also has relative deviation in its own characteristics, such as low hardness, fear of scratching and discoloration. Artificial marble is an artificial stone made of unsaturated polyester resin as binder, natural marble or calcite, dolomite, silica sand, glass powder and other inorganic powders, as well as a proper amount of flame retardant and pigment. By mixing, casting, vibration compression, extrusion and other methods. Artificial stone is developed artificially according to the problems in practical use, and has made great progress in moisture-proof, acid-proof, alkali-proof, high temperature-resistant and flat-jointed. Of course, artificial things naturally have artificial shortcomings, and the naturalness of artificial stones is obviously insufficient, so they are mostly used in places with high practical requirements such as cabinets, and less emphasis is placed on windowsills and floors. Another factor that hinders the use of artificial stones is human factors. Because the manufacturing process of artificial stone is very different, the performance characteristics are not completely consistent. So the efficiency mentioned above is not necessarily the efficiency of the artificial stone you bought. At present, the artificial stone imported on the market is relatively efficient, and relatively speaking, the domestic one may just be "blown". Simply put, the scratches on the surface of imported marble are allowed to be polished with sandpaper, so it is no longer obvious for users to handle them themselves. However, many domestic artificial stones obviously can't support this practice, and the more polished, the worse. Artificial marble is suitable for some harsh environments, such as kitchens and bathrooms.
Quartz stone, marble or artificial stone, which radiates more?
Hello, this is the information I collected. You can refer to it Marble:
Is based on natural stone, use advantages: durable, material color is quartz stone, artificial stone can not be made. Its disadvantages: the stone has high radiation, there are holes in it, and it is easy to mold.
Artificial stone:
Cheap price and soft quality; Disadvantages are that the material is soft and easy to scratch, the anti-leakage effect is not good, and it is easy to grow plum and be polluted, the fire resistance is not high, and the resin content is high.
Quartz stone:
Not easy to scratch, the main component is quartz sand (silicon dioxide) 95%, the mineral ground is hard, Mohs hardness is 7.5, comparable to diamond, not easy to scratch, and has certain sterilization and disinfection effects. Metal objects and the like can't be scraped.
Not easy to pollute, quartz stone is produced in vacuum, and the inside and outside are new composite density non-perforated plates. Its surface is resistant to corrosion. If there are stains or yellow marks on the board, they can be removed with detergent or cleaning towel. In daily cleaning, simply wash with water.
Not easy to burn. Quartz stone is resistant to high temperature, and its fire resistance point is about 1300 degrees Celsius. 93% of its stone contains complete flame retardant, which is resistant to high temperature and will not cause food poisoning due to stone firing.
At present, the price of quartz stone is high, and many people choose cheap stones to use. If the owner carefully calculates, from the perspective of environmental protection and health or service life, quartz stone is the most cost-effective. I hope I can help you!
Does marble have radiation? Is marble radiant?
Does marble have radiation? Natural stone has certain radioactivity, but there are mainly two kinds of stone: marble and granite. The radioactivity of marble is generally lower than that of granite, and most of it can be used for indoor decoration, while granite is not suitable for indoor use in large quantities, especially in bedrooms, elderly rooms and children's rooms. According to testing, different colors of stone have different radioactivity, the highest is red and green, and the lowest is white and black. Moreover, granite and marble used in home decoration are mainly used in kitchen and bathroom countertops, hall floors and other areas, and there is no closed space, which will not cause harm to human body. Generally speaking, the specific activity of marble is low, which is not a problem worthy of attention. Specific activity of granite, red >; Light red > grayish white > white > black. The radioactivity of imported stone is higher than that of domestic stone. Even if the radioactivity index exceeds Grade A or Grade B standards, as long as the indoor ventilation is kept moderate, it will not endanger health. Does marble shine? Marble radiation only exists in natural marble, and artificial marble has no radiation. The production standard of marble is completely within the safety scope of the State Environmental Protection Bureau, so you can use it with confidence. The radiation of marble is generally below13 μ Gy/ h/h. In the data of environmental monitoring, you will find that when the radiation is below 20μGy/h (microgy/h), there is no need to consider the harm. There are many versions of information about marble hazards on the Internet, such as radon. Radon is a colorless, odorless and imperceptible inert gas. Radon and its daughters enter the human body with air, or attach to tracheal mucosa and lung surface, or dissolve in body fluids and enter cell tissues, forming internal irradiation, which induces lung cancer, leukemia and respiratory diseases. According to the research of the World Health Organization, radon is the second largest carcinogen of lung cancer after smoking. After reading these statements, everyone must think that marble is very harmful, but it is not as terrible as everyone thinks. Summary: I believe that after reading the above contents, you should know whether marble has radiation and whether marble has high radiation. I hope it can help you buy marble. Related recommendation: How about Jianyi Ceramic marble tiles, and what's the price? What are the hazards of artificial marble? How to maintain marble?
Which is more glorious, artificial marble or natural marble?
People are very concerned about the radiation problem of natural stone, so we should analyze the specific problems. Some stones contain radioactive substances such as uranium, radium, thorium and potassium. Radium decays to produce radon gas, which is harmful to human body. According to the national standards, stone materials are classified into three categories: A, B and C. According to experts, natural stone materials and ceramic tiles are classified into three categories: A-level products > (only A-level products can be used indoors), including office buildings and family rooms. For example, Xia Hong, Sakura Red, General Red, Taiwan Red, Xinjiang Red, Shidao Red, Anxi Red, Maple Leaf Red, Xilihong, Tianshan White Hemp, Tianshan Red, South African Red and Xiamen Red are all Class A commodities; Class B products are more radioactive than Class A products and cannot be used for interior decoration of living rooms, but can be used for interior and exterior decoration of all other buildings. The radioactive products in natural stone include Indian red and Guilin red; Class C products are more radioactive than Class A and Class B, and can only be used for exterior decoration of buildings. The commodity belonging to Class C is Yongding Red; Natural stone exceeding the control value of Class C standard can only be used for seawalls, piers, stone tablets and other purposes. The representative commodity is azalea red.
But at present, most stone products on the market have not been tested for radioactivity, and A, B and C are not written on the stone. Therefore, we mainly use the variety to determine whether the stone has radiation. Generally speaking, marble is a kind of layered rock, which contains basically the same radioactive substances as soil, so there is no need to consider its radiation problem. Granite is a kind of volcanic rock, and its radioactive substances are related to the substances in the strata when the volcano was formed. Radioactive substances are often associated with non-ferrous metals, and the compounds of non-ferrous metals produce the color of rocks, so we can probably infer whether granite contains radioactive substances by the color of rocks. Generally speaking, red and partially green granites have a high probability of containing radioactive substances. Among the common stones, there are the following kinds of granites containing radioactive substances: Indian red/South African red/Rhododendron red/Rhododendron green. And ordinary white and black stones will not have radiation.
Is the marble countertop radiant?
Marble is a high-grade, environmentally-friendly natural material, which is necessary for luxury decoration.
The cause of marble determines its low radiation, almost all of which belong to grade A, and interior decoration can be used with confidence. The radiation of marble is even less than most building materials such as cement, red bricks and tiles used in building decoration, and it also has a good shielding effect on these common radiation.
What we are talking about here is marble, but another kind of granite of stone is just the opposite.