Stone color you can think of radioactive?

On the stone of radioactive pollution of the indoor environment has been the subject of attention, causing widespread social concern. National Building Materials Bureau of Supervision and Inspection Center of radioactive as a national building materials industry experts said the only specialized supervision and inspection of radioactive materials in the relevant units to take advantage of this newspaper on issues related to radioactive stone to express their views, so that the consumers of radioactivity of the stone issue a more comprehensive and correct understanding.
Presence of radioactivity in the universality of nature
Radioactivity on the earth before the birth of early humans, that the phenomenon of human beings is an environment with a proliferation of radioactive dozens of years. Almost all substances on earth contain radioactive elements, including our humanity itself. Taken from natural stone, containing radioactive material is yes, normal.
Level radioactive stone building materials with the other roughly equal levels of radioactivity
Building we live, living, office space for almost all building materials, building materials taken from natural materials, stone ore from the mine, its essence is the same. Overall, the level of building materials is a low dose of radioactive radiation, can not and must not be very rapid (short term) lead to deterministic effects. Some newspapers reported that due to the establishment of "Cuckoo Green" granite, which led to such and such a sterile, or for stone occurrence of radioactive lead to various types of cancer. This argument is based on the lack of theory and practice.
Stone radiation effects on human health to what extent
Low doses of radiation, the professionals have different views, both sides lack the necessary clinical data on the epidemiological investigation. But one thing is certain, that is, for the high-dose radiation exposure, will certainly cause deterministic effects to human health hazards, and for building materials, stone production of low-dose irradiation, there may be cancer, the probability of cancer with the dose the increase of, typically a few parts per million. This risk is no less than by car, train, construction, mining and other industries with high risk. Standard classification of stone not harmful or harmless to the boundary, it needs to do analysis of benefits and costs, but also a practice that is when the human benefits than costs, then this practice is justified.
The seriousness of the implementation of standards
Discrimination is a stone of the radioactive matter highly professional, do not have the professional knowledge is hard to understand, especially in recent years a number of ambiguous statements, gives rise to fear of speech, has caused panic in the people on the consumption of stone , for which we are very worried. Of course, is not to say: Since the radiological prevalence of harmful levels of non-accurate quantitative conclusions, but also about the problem of radioactive stone Why? This idea is not correct. National compulsory standard JC518-93 with regulatory nature, must be implemented in. But has issued a few years, as stone production enterprise managers should be given high priority.
Radioactivity to determine the color of stone is not scientific
According to our monitoring of the national random sample of stone and commissioned radioactive sample test results show that the color of the stone can not be used as a basis to determine radioactive stone. Radioactive red stone with high and low, red azalea, South Africa, red, Indian red and so high, some B, C class. And a lot of red stone, such as the mountains of red, red is A Luoyuan products. The same species of stone is also due to different radioactive. Because of different origin, such as Red Azalea, and some products for the C, and some was A class. The green stone is true, we now detect a "cuckoo green" is the highest concentrations of radioactive materials of stone products, it is not red, but green.
However, most of the green stone is relatively low radioactivity. Such as Lotus green, malachite green and so on. The stone with flowers, high and low, it is difficult to distinguish. Black, white, relatively low, but not enough to measure the number of samples excluded the possibility of their existence high radioactivity. In short, from the color of the stone is not radioactive, which may have to through the measurement certification inspection organization authorized unit of data prevail.