Gas radon

Signaler une autre image Vous avez trouvé des images choquantes. Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas. It occurs naturally in minute quantities as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead and various other short-lived . It is concentrated in parts of the country rich in granite, such as Dartmoor in Devon, and Cornwall.

In the open air, radon causes no problems.

We all breathe it in throughout . It sometimes becomes concentrated in homes built on soil with natural uranium deposits. It can enter buildings through cracks in floors or walls, construction joints, or gaps in . A study from the University of Calgary in Canada found it in one in eight homes. Traductions en contexte de radon gas en anglais-français avec Reverso Context : The original study concluded that radon gas exposure in high concentrations causes lung cancer. De très nombreux exemples de phrases traduites contenant radon gas – Dictionnaire français-anglais et moteur de recherche de traductions françaises.

OCU denuncia la amenaza del gas radón e inicia una campaña de sensibilización e información. Killer gas - Why SA homes are not tested for Radon. The National Nuclear Regulator tells HealthSA is not immune to radon , which is linked to lung cancer - a top killer in South Africa.

Radon gas is a natural radioactive gas that can raise lung cancer risk. The majority of radon -related lung cancers are caused jointly by radon gas and smoking. Learn what levels are too high and how to avoid exposure to this cancer-causing element. As natural gas moves from the production wells through processing plants and through trunk line systems, it is mixed with gas from many wells. Therefore, the product from wells with higher radon levels becomes diluted.

Some of the radon and its daughters contained in the processed natural gas decay during the transit. It is an alpha particle emitter, having a half-life of 3. Thus all hydraulically transported radon will have decayed over a distance of less than 1–2m. Radon is likely to be carried away more quickly by fluids in areas of permeable rocks such as limestones.

The carrier effect may also be important for other rock types. Carbon dioxide may collect radon gas in the unsaturated zone . When released outdoors, radon gas becomes diluted with air and poses little risk. However, radon gas can build up inside homes and other buildings and . Randall Schumann, Douglass E. Owen, and Sigrid Asher-Bolinder US.