Indoor radon hazards, what is radon?

Radon gas is generally found in indoor bungalows and the ground floor of buildings. Indoor radon is mainly used in foundation soils, building materials and outdoor atmosphere; This is followed by tap water and natural gas. Radon, with the chemical formula Rn, is a noble gas.

Radon is colorless, odorless, tasteless, and radioactive. Radon is widely distributed and is found in every room.

Friedrich.

Dawn discovered the element radon in 1900.

At that time, radon was the fifth radioactive element to be discovered after uranium, thorium, radium and polonium. Dawn discovered that in some tests, the radium compound emitted a radioactive gas. He called it "laser gas".

Radon is the most dense rare gas and one of the densest at room temperature. Although colorless at standard temperatures and pressures, it glows with radioactivity when cooled below freezing of 202K, gradually changing from yellow to orange-red as the temperature decreases. After condensation, radon also emits light due to radioactivity.

Radon is a noble gas. It is used for most common chemical reactions.

It is inert, such as a combustion reaction, because it has 8 outer valence electrons.

, is a chemical element. The usual elemental form of radon is radon gas, which is a colorless, odorless, tasteless, inert gas that is radioactive. The chemical reaction of radon is not active, and it is difficult for radon to react with other elements to become compounds. The hazards of radon are:

1. Radon is a radioactive gas, and when inhaled into the body, the alpha particles of radon decay can cause radiation damage to the human respiratory system and cause lung cancer. And the building material is the most important indoor radon**. Granite, masonry, cement and gypsum, especially natural stone containing radioactive elements, are the most likely to release radon.

2. Radon is more likely to cause lung cancer in smokers, and it is the leading cause of lung cancer among non-smokers.

3. Radon 222 is a toxic nuclide, which can cause lung cancer and seriously damage the kidneys after entering the human body through the respiratory system. The maximum permissible allowable radioactive concentration of radon in the air of a radioactive workplace is becoliters. It is important to note that the toxicity is caused by the particles produced by the radiation, not by chemical properties.

Radon is not a common element and is therefore not well understood. However, unknowingly, it has the potential to become an unseen killer. Radon is a radioactive noble gas that is colorless and odorless.

Its presence can only be detected with specialized instruments. Due to radioactivity, its main hazard to humans is to cause the occurrence of lung cancer. Statistics show that radon is the second leading cause of lung cancer, after smoking.

And among non-smokers, radon pollution is the leading cause of lung cancer.

In the atmosphere in which we live, the presence of radon gas is completely negligible and does not pose a danger to our health. Radon in nature is formed by the decay of radioactive elements such as uranium or radium. It is generally found in deep soils, but can also occur in the surface layer with mining, construction, or natural changes.

The distribution of radon is also very regional, and in places where marble and shale are abundant, the amount of radon will be relatively large.

Radon is heavy, so it can accumulate at lower levels. If the house is built on radon-containing soil, the radon gas leaking may slowly collect in the air in the poorly ventilated basement, causing harm to people. If you live in an area where radon is present and have a basement, you should have it checked by a professional.

In addition, strengthening the ventilation of the basement is an effective measure to avoid the accumulation of radon gas.

Categories: Healthcare.

Analysis: Radon is nature's only naturally occurring radioactive noble gas produced by the decay of radium, it has no color and no odor. The decay products of radon atoms in the air are called radon progenitors, which are metallic particles.

At room temperature, radon and its progeny can form radioactive aerosols in the air and pollute the air. It is easy to be trapped by the respiratory system and accumulate in a localized area to induce lung cancer. Scientific studies have shown that radon human radiation damage accounts for more than 55% of all radiation injuries suffered by the human body in a lifetime, and the incubation period of lung cancer induced by it is mostly more than 15 years, and 1 5 lung cancer patients in the world are related to radon.

Therefore, radon is the second leading cause of lung cancer in humans"Killers"It is the second leading cause of lung cancer after smoking, and the World Health Organization lists it as one of the 19 substances that cause cancer in humans.

The health hazards of radon to humans are mainly manifested in deterministic effects and random effects.

1. The deterministic effect is as follows: when exposed to high concentrations of radon, blood cells change in the body. Radon has a high affinity for human fat, especially when radon is combined with the nervous system, which is more harmful.

2. The random effect is mainly manifested in the occurrence of tumors. Since radon is a radioactive gas, when inhaled, the alpha particles produced by the decay of radon can cause radiation damage to the human respiratory system and induce lung cancer. Expert studies have shown that radon is the second leading cause of lung cancer after smoking, and the World Health Organization has listed it as one of the 19 major environmental carcinogens, and the International Agency for Research on Cancer (IARC) has also considered radon to be an important indoor carcinogen.

According to statistics, there are more than 50,000 cases of lung cancer caused by radon in China every year. Lung cancer in the urban population of Tianjin is caused by radon and its progeny.