radon

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radon

Colorless, odorless gas that occurs naturally due to the breakdown of minerals in the earth. It tends to become trapped in our modern, nearly air-tight homes. Since there has been some correlation between radon and lung cancer, the EPA recommends levels no higher than 4 picocuries per liter (pCi/L), although generally acceptable levels are in the range of 4 to 8 pCi/L. The EPA Web site at www.epa.gov has information on testing for radon and reducing it.

References in periodicals archive ?
En general, las nacientes en la zona de recarga acuifera presentaron concentraciones muy uniformes de 222Rn, posiblemente debido al corto tiempo de residencia del agua, que en la zona alta del macizo del volcan Barva oscila entre 1,1 y 1,5 meses (Sanchez-Murillo, informacion no publicada).
Measurements of 220Rn and 222Rn and CO2 emissions in soil and fumarole gases on Mt.
222Rn (Radon-222 or radon), a known carcinogen, is a naturally occurring radionuclide and Idaho is one of the states that has a relatively high concentration of 222Rn in groundwater.
Spatial correlation between radon (222Rn) in groundwater and bedrock uranium (238U): GIS and geostatistical analyses.
Considering the appropiate correction for laboratory background, the activity of [sup.137]Cs was determined from the 661 KeV peak, [sup.210]Pb from the 46.5 KeV one, and [sup.226]Ra was evaluated from the 352 and 611 KeV peaks of 214Pb and 214Bi, daughter products of the 222Rn in equilibrium with the [sup.226]Ra (Wallbrink et al., 2002).
Measurements the exhalation rate of 222Rn from solid samples.