Soil radium, soil gas radon and indoor radon empirical relationships to assist in post-closure impact assessment related to near-surface radioactive waste disposal.Īppleton, J D Cave, M R Miles, J C H Sumerling, T J The results provide us a new ecological strategy for Rn contamination control, and movable epiphytic Tillandsia plants can be applied widely in Rn removal systems. The specialized foliar trichomes densely covering Tillandsia leaves play a major role in the uptake of Rn because the amplified rough leaf surface area facilitates deposition of Rn progeny particles and the powdery epicuticular wax layer of foliar trichomes uptakes liposoluble Rn. Rn concentrations in the Rn chamber after Tillandsia plant treatments decreased more than those in the natural situation. Here, we found epiphytic Tillandsia brachycaulos (Bromeliaceae) was effective in reducing airborne Rn via the leaves. Plants are believed to be negligible in reducing airborne Rn.
The present effective ways to control Rn contamination are ventilation and adsorption with activated carbon. Radon ( 222 Rn) is a natural radioactive gas and the major radioactive contributor to human exposure. Li, Peng Zhang, Ruiwen Gu, Mintian Zheng, Guiling
Uptake of the natural radioactive gas radon by an epiphytic plant. This process is useful for preparing fixed radon sources for radiological treatment of malignancies, without the danger of releasing radioactive gases. Radon gas is enclosed in quartz or glass ampules by subjecting the gas sealed at a low pressure in the ampules to an ionization process. Radon gas, useful for medical purposes, safely fixed in quartz