Chemical Methods for Removing Radon and Radon Daughters from Air

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Science  31 Mar 1972:
Vol. 175, Issue 4029, pp. 1463-1465
DOI: 10.1126/science.175.4029.1463


Liquid bromine trifluoride and the solid complexes ClF2SbF6, BrF2SbF6, BrF4Sb2F11, IF4(SbF6)3 and BrF2BiF6 react spontaneously with radon and radon daughters at 25°C, converting the radioelements to nonvolatile ions and compounds. The reagents can be used in gas-scrubbing units to remove radon and radon daughters from air. The halogen fluoride-antimony pentafluoride complexes may be suitable for purifying air in uranium mines and analyzing radon in air, since they have low dissociation pressures at 25°C and are less hazardous to handle than liquid halogen fluorides.