Does natural marble have radiation? Is it harmful to human body?

Natural marble has been formed naturally for millions of years. The main component of marble is calcium carbonate. The chemical formula is CaCO3. It is a stable substance insoluble in water and is not easy to react with other substances. Any substance in nature contains natural radioactive elements, but the content of radioactive elements in different substances is different.

The internal and external irradiation of radioactive elements determine the radiation level of the material. The internal irradiation index of natural marble is < 1 and the external irradiation index is < 1.3. Generally speaking, its radiation is much lower than that of ceramic tile cement. It has no radiation damage to human body and can be used safely.

There are radioactive elements in the soil, water and even air in our surrounding environment. Non stone building decoration materials such as cement, steel, brick and whole brick contain radioactive elements as well as stone. Taking the monolithic brick as an example, it is burned by clay and other materials. The clay is formed by rock weathering, and the clay and stone are naturally formed. If the radioactive elements in the clay are high, the content of radioactive elements in the burning monolithic brick is correspondingly high. Therefore, the view that only the stone is radioactive and other materials do not contain radioactivity is incorrect. The Ministry of health also issued the "health protection standard for building materials" early, which limits the activity of natural radioactive elements in building materials to ensure safe use.

According to the marble standard "natural marble block" and "natural marble building board" issued by China, there is no requirement to detect the radioactivity of marble products. Natural marble is a class a decorative material, which can be used for indoor decoration without affecting human health.