The stone was so scary that radioactivity was not imagined

Most radioactive radiation intensity of the product is within the standard value. Why is the decorative material radioactive? According to Zhang Songrang, a radiation environmental supervision and management station in Shaanxi Province, any substance and organism on the earth contains natural radionuclides. In all rocks, there are different levels of radionuclides*, radium, radon and potassium. The content of radionuclides in igneous rocks (such as granite) is slightly higher than metamorphic rocks and sedimentary rocks. However, the high or low radioactive radiation intensity of stone products cannot be generalized. It also has a direct relationship with the place of origin and the geological structure in which it is located.

There are clay in the tile, mixed with gravel, slag or industrial waste residue and other materials, the surface of the brick glaze (more rare earth elements) are sintered. The level of radiation intensity of the ceramic tile depends on the radioactivity in the material and the glaze. Therefore, the radioactivity of ceramic tiles of different origins and different varieties may be different. Recently, the provincial radiation environmental supervision and management station conducted a free test on 100 stone tile products sold locally, and the qualified rate of spot inspection was relatively high, indicating that the radioactivity of stone products on the market htt was within the normal range.

Class A products can be used with confidence. According to Zhang Songrang's introduction, the National Standard for Radioactive Nuclides in Building Materials promulgated and implemented in 2001 classifies decorative materials into three categories, A, B, and C, based on different levels of radioactivity. Among them, the production, sales, and use of Class A decorative materials are not restricted; Class B decoration materials cannot be used in Class I residential buildings (referring to residences, elderly apartments, nurseries, schools, schools, etc.); in addition, Class II residential buildings are Refers to interior surfaces of public buildings such as shopping malls, stadiums, bookstores, hotels, office buildings, libraries, cultural and entertainment venues, exhibition halls, and public transportation waiting rooms, etc., which can only be used for exterior surfaces of Class I civil buildings and others. The interior and exterior finishes of all buildings; Class C decoration materials can only be used for exterior finishes of buildings and other outdoor uses.

Zhang Songrang suggested to consumers that when purchasing decorative stone products, they should ask the merchants for inspection reports from provincial (autonomous regions, municipalities) level radiation testing units. Should pay attention to whether the report is original, the name of the business name and stone ht product in the report should be consistent with the name of the merchant and the purchased product, and also pay attention to the test result category. If it is a type A product, you can use it with confidence.

Environmental Tips Vinegar and pineapple can be removed after the decoration taste Take vinegar into the appropriate amount of glass containers, placed in a ventilated place, not only can evaporate moisture protection wall paint layer, you can also absorb residual decoration aftertaste. In addition, the placement of pineapple in the room can absorb the residual paint taste, because it is a crude fiber fruit, can play a certain adsorption effect on the paint.

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