Inferior ceramic tableware is corroding your health

China is a big country in ceramics, and the technology of making porcelain has a long history. It can be said that porcelain has already entered thousands of households and become an indispensable part of most Chinese families. Whether it is a new home or a daily use, porcelain, especially ceramic tableware, is almost visible to every household and is also used every day. However, not many people may notice that these frequently used porcelain tableware are likely to have a subtle impact on people's health. Nowadays, many large supermarkets are full of ceramic tableware with a wide variety and exquisite styles. There are also some street stalls selling all kinds of low-cost porcelain, which seems to be of good quality. Many consumers have no idea about the quality of porcelain at all. They think that porcelain used as tableware can be priced at a suitable price or in a good style. In fact, inferior porcelain will slowly release harmful substances to the human body, long-term use, will have a certain impact on health. Inferior porcelain will slowly release substances harmful to human body. The dissolution amount of heavy metals such as lead and cadmium contained in inferior ceramic tableware exceeds the standard, which is extremely harmful to human body. The 'technical guide for exporting daily ceramics' issued by the Ministry of Commerce points out that 'lead and cadmium may exist in glaze and decorative patterns during the manufacturing process of daily ceramics. If it is used to hold food, especially acidic food, lead and cadmium will dissolve into food and enter the human body. Lead, cadmium is a heavy metal elements, in the human body, easy to enter the blood and not easy to discharge. Long-term consumption of foods containing lead and cadmium will affect the immune system of the human body and lead to various diseases. 'There is a concept involved here--Amount of dissolution. The amount of dissolution can be said to be the decisive indicator for testing whether the porcelain is qualified. First, let's talk about how inferior ceramic tableware causes harm to human body. When using unqualified ceramic products, harmful substances will dissolve out, with the food into the human body, a long time, will cause chronic poisoning. Lead, mercury and cadmium in common inferior ceramic tableware are all elements with large dissolution. If the amount of cadmium dissolved exceeds the standard, it will lead to human cadmium poisoning and lung diseases; However, excessive dissolution of lead can lead to lead poisoning in human body. Mild cases are characterized by irritability, lack of appetite, personality change and abdominal pain, while severe cases will lead to renal failure, slow response, gout, peripheral nervous system diseases, etc. For children, lead poisoning after the harm is particularly serious, light will affect the development of the brain, heavy will cause increased intracranial pressure, vomiting, spasm and so on. Part of the lead compounds in colored porcelain can be acidolysis, when the contact between food and porcelain surface, lead may be dissolved by organic acid in food. In addition, if harmful components are contained in ceramic products, they may dissolve out at a high temperature above 600 ℃, so harmful substances in inferior porcelain will also dissolve out in large quantities when microwave and furnace are used. When using microwave and furnace, the harmful substances in inferior porcelain will also be dissolved in large quantities, so is it difficult to identify the safety of porcelain on the market? Can't you buy all the porcelain? Down also don't have to give up eating for fear of choking. Usually, the porcelain sold at the price in large supermarkets has been tested and can be purchased with confidence, but it is difficult to guarantee the porcelain sold in mobile stores or wholesale markets. At this time, it is necessary to brighten your eyes: First of all, at present, the three main painting methods of ceramics are divided into overglaze color, underglaze color and underglaze color. Usually, the amount of lead and mercury dissolved is relatively high, and the porcelain that can come into contact with food is colored on the glaze. Because of the production process, the price of this kind of porcelain will be much lower. Secondly, how to identify glazed ceramic tableware? First of all, you can touch the pattern surface on the ceramic, whether there is obvious protrusion, if there is, it is very likely to be the glaze color; The second step, if it is round porcelain, can be reversed on the table to see whether it is flat, such as uneven, can also be concluded as unqualified low-cost products; The third step is to knock on the porcelain. The sound of high-quality porcelain should be crisp. On the contrary, the sound of inferior ceramic tableware will be turbid.