A PRELIMINARY COMPARISON OF RADON SURFACE FLUX MEASUREMENT USING LARGE AREA ACTIVATED CHARCOAL CANISTERS fLAACC) and ELECTRET ION CHAMBERS flEIC)

As part of an ongoing project studying the radiological and environmental effects of the application of phosphogypsum (PG) to agricultural land, a preliminary comparison was made between the base line EPA radon flux measurement technology that uses LAACC's and new methods using EIC's. These studies were made at the Range Cattle Research and Education Center. The radon sources for these tests consisted of six trays (0.61 by 0.92 m) filled with PG (approx. 21pCi g"' %a) -- three to a depth of 7.6 cm and three to a depth of 3.8 cm . The LAACC monitors were exposed for a period of approximately 24 hours and the EIC monitors for approximately two days. This study suggests that both technologies provide comparable results. The problems encountered as well as the advantages and disadvantages of these two technologies are discussed.