There is something it has banned in more than 60 countries in Europe and the United StatesBut in China, it is still widely used, and that is asbestos. Asbestos was once known for"Miracle fiber".When asbestos was first discovered, all developed countries were desperately producing asbestos products. Until after that happenedAsbestos began to be banned by various countries.
When more than 60 countries in Europe and the United States call for the cessation of the use of asbestos in the world, most of the countries are still manufacturing a large number of asbestos products. Why is asbestos being phased out abroad?What the hell is going on?Why hasn't my country been affected?
Asbestos has a long historyThe earliest dates back to ancient EgyptAsbestos was used to make the pharaoh's shroud.
At the end of the Eastern Han Dynasty in China, there are already fabrics made of asbestosFire Raccoon ClothBecause of its non-flammability, fire cloth is called a fireproof suit. During the Napoleonic period in Europe, Napoleon encouraged people in Italy to conduct more related experiments.
In the 18th century, 20 asbestos mines were developed in EuropeThe largest asbestos mine is the Reichenstein mine in Germany;With the development of the mining industry, asbestos was used in the textile industry.
As the health hazards of asbestos gradually emerged, people realized how harmful asbestos is to the human body. The global demand for asbestos is gradually decreasingFrom 5 million tonnes per year in 1975, global asbestos mining fell to 3 million tonnes in 1998. The harm of asbestos dust to people's bodies has also been spread, and people's awareness of prevention has been improved.
Asbestos has also been restricted in the marine industry since 2002Except in exceptional circumstances, it is forbidden to use anything containing asbestos on board. In 2009, new regulations were introduced, according to the regulations of the International Maritime OrganizationIn 2011 the use of asbestos in the marine industry was completely banned.
In the fifties of the twentieth century,A death in Australia,It attracted people's attention at the time, and it turned out that the cause of death was related to asbestos.
In the western part of Australia,There used to be a deserted town calledWitnum, at the beginning of the twentieth centurySomeone found asbestos hereAs one of the most popular mineral resources at the time,Witnum attracts a lot of people who come here to mine, and a large number of residents flock to Witnum.
The establishment of the asbestos mine has provided jobs for many local people and boosted the economic development of Witnum. The town entered a booming periodWith a resident population of tens of thousands, it is lively every day, full of vitality and vitality, and everyone here is yearning for a better tomorrow, but they don't know that a crisis lurking behind them is slowly approaching them.
During the mining process of asbestos mines, asbestos fibers are dispersed into the air. Unintentionally, people inhale these invisible fibers. Tragedy is quietly brewingPeople who inhale asbestos fibers are about to pay with their lives.
Over time, local miners inhaled more and more asbestos fibersSome people have symptoms such as mental confusion and difficulty breathing, and these people's condition is getting worse day by day, as if something is blocking their airwaysThere seems to be a lump of lead in his chest. Immediately afterwards, all the residents of the area began to be affected;The closer to the asbestos mine, the more serious the condition, with the miners being the most serious.
Bluestone asbestos can easily penetrate the lung membranes and enter the alveoliAnd it has the characteristics of strong acid resistance, the human metabolism can not decompose crocidolite, these fibers will accumulate in the body, which eventually leads to cancerPeople can develop diseases such as asbestosis and lung cancer.
At that time, more than 2,000 townspeople paid for their lives because of asbestos. Later, in consideration of the harm of graphite to the human body, the town's asbestos field was closed, and the residents moved out of the area. In 1966, the town was closed and Witnum was removed from the map.
Witnum has become a ghost town because of asbestos, and in 2007, Australia implemented measures to ban people from entering Witnum. But there are still many people who come here to check in because of curiosity. Many tourists come here afterSymptoms such as cough and chest tightness will occur, and you will feel uncomfortable for a while.
More than half a century later, millions of tonnes of asbestos contaminants remain around the mine. These pollutants are so lethal that no matter what the organism is, it is difficult to survive in the vicinity. Asbestos's damage to the human body is like a chronic poison that can only occur after decades of incubation.
In order to prevent more people from suffering from asbestos,Australia** cut off the power to Witnum City and erased it from the official map. Ironically, Witneum has become a popular destination for many explorers and influencers.
As early as the 50s of the last century, China has begun to use asbestos products. Asbestos tiles, soundproof boards, fireproof boards, etc. These asbestos products play a very important role in construction, transportation, power and other industries. Although asbestos, there is a risk of carcinogenicity. However, its superior physical and chemical properties make asbestos have a very important position in China's economy.
According to official statistics, the annual use of asbestos in China is two million tons. Most of them are used in the construction field, asbestos products can be applied to walls, roofs, sound insulation layers, waterproof layers, etc. Asbestos has excellent fire resistance, acid and alkali corrosion resistance, heat preservation, etcIt is one of the irreplaceable materials in China's construction industry.
When making brake pads for motorcycles and automobiles, asbestos is also needed to make them, and some friction materials may be asbestos. The application of asbestos in the transportation industry has greatly improved the safety performance of vehicles. In addition to these, asbestos also plays an important role in the power industry. In the process of power generation, in order to ensure safety, a large number of refractory materials need to be used to protect the furnace and flue. Asbestos happens to have good fire resistance, so it is widely used in power equipment.
Long-term exposure to asbestos can lead to a variety of serious diseasesThis has been unanimously recognized by the international community. Therefore, relevant measures have also been taken to restrict the use of asbestos. Blue asbestos, the most pathogenic amphibole in asbestos, has been completely banned in China, and chrysotile asbestos is currently used in China. Studies have shown that long-term exposure to chrysotile asbestos at low concentrations does not have adverse consequences.
For our country, the ban on asbestos is a necessary measureHowever, it is unlikely that asbestos will be completely banned until a replacement is found. We can only take our time step by step, strive to achieve scientific and technological upgrading as soon as possible, and reduce our dependence on asbestos. At the same time, there is a need to raise public awareness of the hazards of asbestos and reduce exposure to asbestos products.
Asbestos if well preserved and not damaged or crackedThen the asbestos fiber will not dissipate, and there is no harm to the human body. Therefore, if you work for a long time and have people in an asbestos environment, you must do a good job of protection. You can go to the hospital regularly to check the condition of your lungs.
Although European and American countries have banned it, they will still import asbestos products. So they are just shouting slogans, there is really something missing, he needs to use it, and he will continue to use it, but he will pay attention to protection.
Finally, in daily life, we must pay attention to avoid inhaling asbestos fibers, and there is nothing wrong if you don't inhale.