WHAT IS RADON GAS?
Radon gas is a colorless, odorless radioactive decay product. What does that mean?
Radon (Rn-222) is a noble gas formed from radium (Ra-226), which is a decay product of uranium (U-238).
Radon gas emanates from rocks and soils and tends to concentrate in enclosed spaces, such as underground mines or houses.
WHY TEST FOR RADON GAS?
When radon gas is inhaled, densely ionizing alpha particles emitted by the deposited short-lived decay products of radon (Po-218 and Po-214) can interact with biological tissue in the lungs, leading to DNA damage.
Studies on indoor radon and lung cancer in Europe, North America, and Asia provide strong evidence that radon causes a substantial number of lung cancer cases in the general population.
The EPA map on the right shows radon gas concentration by county. Much of Colorado is level 3, which is the highest. It is recommended homes be tested every two years.
EPA map of radon concentration by county.
TWO TYPES OF TESTS
Radon gas testing can be broken down into two types of tests- Active and Passive
The most commonly used type of passive tests use activated charcoal and covered with a screen and filter. Radon present in the air adsorbs onto the charcoal, adsorption being a process by which gases or vapors condense to create a thin film. At the end of the sampling period, the container is sealed and then sent to a laboratory for analysis.
These are the type of kits available in retail stores and online.
This device measures radon and produces results in pCi/L. This detection category includes devices that record real-time, continuous measurements of radon gas over a series of minutes, and then report the results in hourly increments.
These devices report on the fluctuation throughout the test period and give an average at the end of the test.
We use a Continuous Radon Monitor (CRM) to test the radon gas levels in your home. This equipment is certified annually and operated according to EPA and NRPP guidelines.
Home Buyer's and Seller's Guide to Radon
A Citizen's Guide to Radon: The Guide to Protecting Yourself and Your Family from Radon
Health Risk of Radon