At present, whether the colored tableware sold in the market contains substances exceeding the standard needs to be tested by the quality inspection department to determine. But generally speaking, the brighter the color of ceramic tableware, the easier it is for heavy metals to exceed the standard. In order to pursue colorful effects, manufacturers will add some heavy metal additives to the glaze. Due to excessive heavy metals, the dissolution of lead and cadmium from ceramic tableware often exceeds the national standard. Therefore, consumers had better not use ceramic tableware with too bright colors.

Selection of ceramic tableware

Porcelain tableware has become the first choice for most families to buy tableware because of its diverse shapes, exquisite smoothness, bright colors and easy cleaning. However, the colored glaze on the ceramic surface may become a health killer. Lead, mercury, radium, cadmium and other elements in colored glaze are harmful to health. Radioactive element radium can kill white blood cells. Cadmium, lead and mercury are all heavy metals. Cadmium and lead can cause liver or other visceral poisoning, and mercury can cause liver and kidney sclerosis. When unqualified ceramic products are used, these harmful substances will dissolve out and enter the human body with food, which will cause chronic poisoning over time. At the same time, we should also pay attention to the clay for making ceramics. Inferior clay contains more microorganisms and harmful substances, which will endanger human health even if it is not glazed.

When purchasing and using ceramic tableware, we should pay attention to the following points:

You must choose the formal market when buying ceramic tableware, and you must not buy inferior products without formal manufacturers on a cheap basis. According to national regulations, when ceramic tableware is soaked in 4% acetic acid, the dissolution amount of lead shall not be greater than 7 mg/L, and the dissolution amount of cadmium shall not be greater than 0. 5 mg/liter. At present, the products of regular manufacturers can basically meet this requirement. ?

Pay attention to the color of tableware when buying, and touch the surface of tableware with your hands to see if the inner wall is smooth. ?

Smell the smell with your nose. ?

Don't buy ceramic tableware with too bright colors. In order to make the color bright, manufacturers will add some heavy metal additives to the glaze, so the brighter the color of tableware, the easier it is for heavy metals to exceed the standard. ?

We should buy in-glaze and under-glaze tableware, with strict raw materials and process control. ?

Boil the tableware in boiling water for 5 minutes or soak it in vinegar for 2-3 minutes before use to dissolve the toxic substances in the tableware.