Tiles are beautiful and easy to clean, and are the first choice for many home decorating rooms, but it seems that few people know that these tiles made from natural materials have radiation effects. The State Administration for Industry and Commerce announced the results of the monitoring of the radioactive dose level of porcelain tiles on the market, with over one percent of products exceeding the standard of radiation.
Song Guangsheng, director of the Environmental Testing Center of the China Interior Decoration Association, introduced that in the production process of ceramic tiles, in order to increase its surface finish, facilitate cleaning and decontamination, and avoid corrosion, manufacturers have applied a layer of ''glaze'' (so the tiles Also known as glazed tiles), this is a ceramic pigment in which zircon sand is added as an opacifier, and the content of natural radionuclides in zircon sand is generally high. According to report, China's building ceramics industry uses mostly domestic zircon sand, and its gamma-ray specific activity exceeds the current value of China's current standard "Basic Radiological Protection Standards" for "radioactive substances."
Experts generally believe that the nature of tile radiation and stone radiation is not essentially different. Studies have shown that the way of ceramic tile radiation to consumers: First, from the raw materials of γ, β radiation, and second, from the element of helium on the human body. In addition, glazed fabric dust that has fallen out of the ceramic tile after the service life or human damage has been inhaled by the human body and is even more dangerous to health. In all the tiles, the ultra-white bricks in the polished tiles are more radiant, and the precipitation rate of the radioactive elements on the surface of the colored glazed tiles is higher than that of ordinary tiles.
Song Guangsheng said that in developed countries, tiles are generally used only for the decoration of kitchens, bathrooms, and laundry rooms. However, in China, tiles are commonly used in the decoration of living rooms, bedrooms, and even offices. People have a long exposure time and are more likely to cause contamination of indoor radioactive materials, thus causing damage to human health.
Experts suggest that consumers should pay attention to the following points when buying ceramic tiles: purchase brand products in the formal building materials market; request radioactive product inspection reports from distributors, and observe the test result categories (A is the best, B is the middle, and C is the worst); To prevent excessive indoor radioactive materials, it is advisable to have special personnel perform radioactive detection before the accommodation is completed. It is advisable not to use ceramic tiles in the living room to reduce indoor radiation pollution.
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