Is red copper harmful to human body

It is really not recommended to use copper ware!

Copper in the humid environment is easy to produce copper green (bicarbonate two copper oxide) and air oxidation of green powder (copper oxide) are toxic substances, and in cooking due to friction copper and tin, the same harmful to human health. As a result, copper tableware has gradually been phased out. But northern areas in winter sometimes like to use copper hot pot mutton, if the use of copper before the removal of clean, this toxic substance will be with food into the human body, make people appear nausea, vomiting, abdominal pain and other poisoning symptoms. Accordingly, before using steel tableware, it is best to polish tableware with sandpaper first, or dip in vinegar and salt with cotton; Leftover vegetable soup should not be kept overnight in copper containers. In addition, when copper meets high acid and alkali heat, it can take place in order to produce harmful copper salts, such as carbon dioxide in acidic drinks can produce basic copper carbonate, and citric acid can produce copper citrate, people will appear after drinking black tongue coating, nausea, vomiting and other gastrointestinal symptoms.

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