How to detect whether the radiation of marble and porcelain exceeds the standard?

There is a professional equipment to detect whether the radiation of marble and porcelain exceeds the standard-Environmental Protection Bureau. However, the radiation (not radiation) of most marble heads does not exceed the standard. 80% of stones can be used safely indoors, and stones with extremely low radioactivity can also shield the radiation of other materials. ?

Building stone contains no radiation. As early as 2008, under the sponsorship of the American Marble Association, an independent, complete and scientific authoritative testing report was released. The conclusion is that the complete scientific research shows that all the marble and granite samples tested have not found any samples harmful to human health.

China Stone Association spent more than a year compiling the White Paper on Natural Marbles in China (20 13), which clearly pointed out the facts of natural stones (marble, granite, etc.). ) is the "most environmentally friendly, healthiest and irreplaceable" building material, which must be thoroughly protected and restored.

Marble radiation refers to the harm to human body caused by radiation dose rate greater than 0.23μSv/h; The radiation dose rate of marble is in the range of 0.23μSv/h, above which the radiation is high, and below which it can be ignored.

At present, the marble sold in the market can meet the standard after national testing.

Extended data:

Classification of marble

Natural stone products are divided into three categories according to the specific activity:

1, with unlimited use range.

2, can not be used for living room, interior decoration, can be used for indoor and outdoor decoration of other buildings.

It can be used as the exterior decoration of all buildings.

At present, the decorative stones are mainly granite and marble. Granite is more radioactive than marble and is not suitable for indoor use. Marble is divided into natural and artificial. Artificial marble is made of natural marble or granite crushed stone by stirring, molding, grinding and polishing.

Generally speaking, the specific activity of marble is low, which is not a problem worthy of attention. According to the test data of Geological Exploration Center of National Building Materials Bureau and Industrial Hygiene Laboratory of Ministry of Health, the specific activity of granite stone is higher than that of marble and slate, and its radiation is stronger. Judging from the color of stone, the specific activity of granite is white and black.