Radon is a decay product of Uranium.  Uranium is naturally found in rocks that are in the ground through out the earth.  As Uranium undergoes radioactive decay, it changes into Radium.  And as Radium breaks down, it changes into Radon.  Radon then decays into other RDPs (or radon decay products), which are also radioactive.

RDPs are different from actual radon in a few ways:

  • They are the source of cell damage in the lungs
  • They are short lived products (less than 30 minutes), but the most significant
  • They have static electrical charges
  • They are chemically active
  • They are solid particles, rather than gases, that act like invisible aerosols in the air
  • They are classified as heavy metals

These RDPs are the part of Radon that causes health risks to everyone.  The radon decay products can attach to surfaces such as dust or smoke particles that can get carried into the lungs where they can cause cancer.

Radon is measured in units called picocuries per Liter, pCi/L.  A picocurie is one trillionth of a curie.  A curie is the amount of radioactivity released from one gram of radium.  The EPA has established that a house or building should have a limit of no more than 4 pCi/L in the indoor air.  If the levels are higher than 4 pCi/L, the EPA recommends that the house have a radon mitigation system installed to reduce the levels.

If you have any questions about Radon in your Home or Building