Radon and Radon Testing
Radon is a radioactive, colorless, odorless gas that occurs as a natural byproduct of the radioactive decay of uranium and radium. Their child, radon, contributes a significant part of normal background radiation that is present all over the earth. Small amounts of these radioactive elements may be found in the rocks of the earth – particularly in some granites and shales, in the soil and in groundwater.
Radon is the heaviest of the noble gases – about eight times denser than normal air. Because of this, it tends to accumulate in low lying and confined areas. There, it can build to concentrations high enough to be regarded as a potential health risk.
Radon – Does It Matter?
Statistics suggest that prolonged radon exposure is a contributing factor in 20,000 lung cancer deaths per year in the United States alone. The Surgeon General has warned that radon is the second leading cause of lung cancer in the United States – behind smoking. Smokers and small children are considered to be more at risk when it comes to radon exposure. Statistics also show that exposure to radon causes more annual deaths than drunk driving, drowning and home fires.
While no amount of radon exposure can be considered 100% safe, we will always have some exposure to a low level of background radon radiation. While the amounts of radon vary by geographic area, the national average concentration of outdoor radon is about 0.4 picoCuries per liter (pCi/L) for the United States. Ideally, radon levels inside a home should be the same as outdoors, but these results are difficult to achieve. The average indoor radon concentration is 1.3 pCi/L. (more…)