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 Beijing Zhonghuan environmental quality monitoring center professional third party environmental monitoring and testing agency
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Current position: Stone radioactivity
Radioactivity of stone
Date of issue: 2014-3-26 14:18:09 source: our website editor:

??? There are almost no radioactive substances in the material world, including soil, air, water and human body itself. According to the introduction of global stone technology experts, it is certain and normal that stones are taken from nature and contain radioactive substances. The radioactivity of stone mainly refers to the radioactive material produced by the decay of radium, thorium and potassium, which is mainly radon. According to the "classification and control standard for radiation protection of natural stone products" issued by the State Bureau of building materials in 1993, 80% of the stone samples belong to class a stone which can be used in any occasion. Natural stone is often mistaken as the only indoor "pollution source" and is demolished. In fact, the radon emitted from the surface soil is also one of the main sources of indoor radon concentration, so the radon content in the basement and semi basement of bungalows and buildings is relatively high; and the content of radioactive material in the wall brick made of coal ash slag is sometimes higher than that of some granite. There are also indoor decoration in the use of coatings, decoration materials, formaldehyde and benzene release on the human body is also very big. In addition, TV sets, refrigerators, computers, air conditioners and microwave ovens also emit a small amount of micro radiation

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