title: Removal of radon and thoron daughter products from glass fibre air sample filters.
mesh_terms: D000398:Air Pollution, Radioactive; D002713:Chlorine; D005374:Filtration; D008722:Methods; D011886:Radon; D013910:Thorium; D013997:Time Factors
chemical_list: D002713:Chlorine; D013910:Thorium; D011886:Radon