Heavy metal poisoning refers to heavy metal ion poisoning; If the copper pot is not used for a long time, there will be copper rust (basic copper carbonate) on the surface, which will dissolve in acid, so the amount is relatively large, so it is toxic.
Although copper is a trace element, the lack of it will lead to different clinical symptoms and signs, and zinc and copper can be ingested into the human body through general diet and food. Long-term use of copper kettle water may lead to the risk of chronic poisoning due to excessive copper content, so it is generally not recommended to use the known copper kettle with high zinc content.
Copper is a non-ferrous metal closely related to human beings. Widely used in electric power, light industry, machinery manufacturing, construction industry, national defense industry and other fields, second only to aluminum in the consumption of non-ferrous metal materials in China. Copper is a red metal and a green metal. It is said to be a green metal mainly because it has a low melting point and is easy to be remelted and smelted, so it is quite cheap to recycle. In ancient times, it was mainly used for casting utensils, artworks and weapons. Famous utensils and works of art such as Simu Wuding and Siyang Fangzun.
In modern life, people's intake of copper is insufficient, and the daily intake is only about 0.8 mg, while normal people need 2 mg of copper every day. Therefore, experts suggest that in addition to eating more foods rich in copper, such as animal liver, oysters, beans, vegetables, fruits, oats and so on. In life, we should consciously use more copper tableware-copper shovel, copper frying spoon, copper hot pot, copper chopsticks, copper spoon and copper pot.
References:
Baidu encyclopedia-copper