Jade is also a kind of stone, which contains radioactive elements.
The same is true for marble furniture sold on the market (such as sapphire, purple jade, red dragon stone and sapphire agate… etc.), so the produced furniture must be tested to ensure Conforms to environmental protection standards, the ray intensity is lower than the national control standard, and the use of transparent paint coating on the stone surface changes the resonance between the magnetic field of the stone product and the human body. The feel is improved. If the radiation intensity exceeds the standard, it will bring many harms to the health of consumers. Granite and marble in natural stone are widely used in architectural decoration because of their hard texture, beautiful and natural texture. However, since natural stone is the basic constituent material in the earth’s crust, its radioactivity exists objectively. Due to the different origin, geological structure and generation age of various stones, their radioactivity is also different. After testing, the radioactivity in the stone is mainly radioactive substances produced by the decay of the three radioactive elements of radium, thorium and potassium. If the content of decayable substances is too large, that is, the “specific activity” of radioactive substances is too high, it is harmful to the human body. The State Bureau of Quality and Technical Supervision has conducted random inspections of natural stones on the market. According to the test results, the granite exceeds the standard and the content of radioactive elements is relatively high. There are two main aspects of radioactive hazards in natural stone, namely internal radiation and external radiation. Radiation in the body mainly comes from the decay of radioactive radiation in the air into a kind of radioactive substance radon and its daughters. Radon is the only natural radioactive gas in nature. When it acts on the human body, it will quickly decay into a nuclide that the human body can absorb. The human respiratory system causes radiation damage and induces lung cancer. Statistics show that radon has become the main cause of lung cancer. In the United States, 5,000 to 20,000 people die each year. In my country, about 5,000 people die each year due to lung cancer caused by radon and its progeny. In addition, radon also has a high affinity for human body fat, thereby affecting the human nervous system, making people depressed and drowsy. External radiation mainly refers to the biological effect produced by the radiator in natural stone directly irradiated to the human body, which will cause damage to the blood-forming organs, nervous system, reproductive system and digestive system in the human body.
Any natural stone has a certain degree of radioactivity, that is, radiation, whether it is natural marble or artificial marble, it has a certain degree of radiation.
Marble is divided into natural marble and artificial marble. Natural marble has very low radioactivity and basically does not cause harm to the human body, while the high radioactivity is artificial marble.