Size distribution, equilibrium ratio and unattached fraction of radon decay products under typical indoor domestic conditions.
C. Huet, G. Tymen, D. Boulaud (2001), The Science of the total environment, 272 pp. 97-103
In order to characterise the behaviour of radon decay products under domestic conditions, long-term measurements were carried out from May 1997 to April 1998 in a typical dwelling located in Brittany (France). In particular, the unattached fraction and equilibrium factor were continuously measured. Moreover, the size distributions of unattached and attached radon daughters were investigated by using specific instruments implemented in the laboratory. All these experiments were carried out under different typical aerosol conditions. The results evidenced the strong influence exerted by the characteristics (concentration, size) of ambient aerosol on these different parameters.
This work has been done with the collaboration of the Laboratoire de Recherches appliquées Atmosphère-Hydrosphère, Faculté des sciences de Brest.