Chemical pollutants: radon

Because people on indoor radon radiation damage is lack of knowledge, a lot of people would be confused with radon, formaldehyde, noxious, detection and prevention knowledge is ignorance.

In fact, the radon has likely hidden in the corner of our lives, because it is a radioactive inert gas. No color or odor, produced by the decay of Radium is the only nature natural radioactive inert gas, the proportion is air 7.5 times. Indoor radon sources mainly has following several aspects:

First release of radon in soil.

Deep in the ground containing uranium, radium, thorium in soil, rock can be found high concentrations of radon.

These radon can ground fault zone, enter the soil, and along the sides of the crack spread to the Interior. In General, the lower House indoor radon content is higher.

Second, the release of radon in building materials.

Building materials is the largest indoor radon.

Such as granite, sand, cement, brick and plaster and the like, in particular, contain radioactive elements of natural stone, easy release radon. A variety of stone as the origin and geological structure and generate different radioactive '. National quality technology supervision Bureau has on the market of natural stone for the inspection, test results, which exceeded the greater of granite, of radioactive high.

The third is the outdoor air into the indoor radon.

In the outdoor radon dose of radiation is very low, but once inside the room, you will accumulate in large amounts in the Interior.

Indoor radon also has distinct seasonal changes: experimentation is available, the highest summer in winter. Visible, indoor ventilation conditions directly determines the radon dangers to human beings.

The fourth is used for heating and kitchen equipment for natural gas radon release out.

Radon gas hazards also lies in its non-volatile.

Volatile gases can over time, gradually reduced to the level of safety, but indoor radon does over time. Thus, underground shelter of radon concentration is higher than the ground rooms, probably 40 times.

Radon is a colorless and odorless, therefore it harm to the human body is unconsciously.

Radon hazard to human health, the main one is the cause of lung cancer, mainly through the by respiratory interception radon daughters accumulating in the lungs, it evoked the incubation period of most lung cancer in 15 years, is a cause of lung cancer is the second largest factors, who put it as one of the 18 major environmental carcinogens. The second is cause leukemia. Third, lead to loss of fertility, mainly through kill sperm. In addition, radon can influence human body fat, the spirit of the nervous system, drowsy. Concerned experts that radon gas has become a home health Super killer.

(Editors: Luo Li-ping)