title: Radon and its decay products in outdoor air.
abstract: The determination of the outdoor concentration of radon and its decay products in the lower layers of the atmosphere is not easy, because of the fact that their concentrations there are very low and, therefore, it is necessary to use low levels of background detection equipment. Our usual methods were modified and a level of several Becquerels per cubic meter was then measured.
authors.affiliation: State Institute for Nuclear, Chemical and Biological Protection, Kamenná 71, 262 31 Milin, Czech Republic. burian@sujchbo.cz
authors.forename: Ivo
authors.initials: I
authors.lastname: Burian
authors.forename: Petr
authors.initials: P
authors.lastname: Otahal
mesh_terms: D000388:Air / Q000032:analysis*; D004867:Equipment Design; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods; D011886:Radon / Q000032:analysis*
chemical_list: D011886:Radon