What is the “true” radon concentration inside a room?

Summary

A total of 102 radon measurements were taken in a bedroom in the period August 1994 ‐ January 1995. The method used involved placing activated charcoal canisters in six different sampling points in the room. The amount of radon in each collector was determined by counting the ²¹⁴Pb and ²¹⁴Bi gamma emitters by means of NaI(Tl) detector. The integrated radon concentration over the aforementioned lapse was also measured through a solid state nuclear track detector. On the whole, the position of dosemeters did not appear to be a critical parameter. On the other hand, the indoor radon level exhibited strong fluctuations, over short periods of time.

Key words:

• dosemeters
• natural radioactivity
• radon