Many daily ceramic tableware have flower decoration, and most of them are decorated with glaze, mainly on-glaze, in-glaze, under-glaze and other decorative methods. Different decorative methods have great differences in the content of heavy metal elements such as lead and cadmium. For example, long-term consumption of food contained in products with high lead and cadmium content will cause lead to deposition in the blood, resulting in damage to the central nervous system, kidneys and other organs of the brain, and will also have adverse effects on the intellectual development of children.

Porcelain eating utensils in the glaze, underglaze color and most of the color glaze porcelain, white porcelain lead, cadmium content is very low, and on-glaze color porcelain if the ceramic flower paper processing using inferior pigments, or in the flower design of high lead and cadmium pigment dosage is too large, or when the temperature and ventilation conditions are not enough, it is easy to cause lead, cadmium dissolution amount exceeds the standard.

Some white porcelain, mainly uncolored bone ash porcelain, due to the use of lead-containing frit glaze, if the firing is not strictly in accordance with the process conditions of bone ash porcelain control, lead dissolution amount is also very likely to exceed the standard.

glaze, underglaze color ceramics lead, cadmium dissolution amount is very small or almost no, you can rest assured to buy. In order to reduce the influence of lead content, glaze color products can be used according to different purposes, and the following measures can be taken:

1 For utensils containing food, attention should be paid to the decoration of the surface in contact with the food.

2 For utensils containing acidic food, try to choose products with fewer surface decoration patterns.

3 When purchasing, you should also pay attention to whether the color of the pattern is bright. If it is not bright, it may be that the temperature does not meet the requirements during roasting flowers. The dissolution of lead and cadmium in such products is often high.

4 Pay special attention to products that can wipe off the pattern by hand. This product has a very high amount of lead and cadmium dissolution.

5 For products that are not assured, you can soak them in vinegar for a few hours. If you find that there is a significant change in color, you should discard In short, ceramic tableware is not good for human health because of the glaze color, so it is best to go through a certain treatment, otherwise the long-term damage to the body is still very large, will induce some incurable diseases.