Model-derived dose rates per unit concentration of radon in air in a generic plant geometry

Jordi Vives i Batlle, Andrew Smith, Sandra Vives-Lynch, David Copplestone, Gerhard Prohl, Terje Strand, Hildegarde Vandenhove

    Research outputpeer-review


    A model for the derivation of dose rates per unit radon concentration in plants was developed in line with the activities of a Task Group of the International Commission on Radiological Protection (ICRP), aimed at developing more realistic dosimetry for non-human biota. The model considers interception of the unattached and attached fractions of the airborne radon daughters by plant stomata, diffusion of radon gas through stomata, permeation through the plant’s epidermis and translocation of deposited activity to plant interior. The endpoint of the model is the derivation of dose conversion coefficients relative to radon gas concentration at ground level. The model predicts that the main contributor to dose is deposition of 214Po α-activity on the plant surface and that diffusion of radon daughters through the stomata is of relatively minor importance; hence, daily variations have a small effect on total dose.
    Original languageEnglish
    Pages (from-to)513-529
    JournalRadiation and Environmental Biophysics
    Issue number4
    StatePublished - 21 Oct 2011

    Cite this