title: A survey of 222Rn concentrations in domestic water supplies of Iran.
abstract: As part of a national program to determine public exposure to natural radiation, 222Rn concentrations were determined in domestic water supplies, including ground and surface waters, in 23 provincial centers using a liquid scintillation counting technique. The minimum and maximum mean concentrations of 222Rn in ground water were, respectively, 7.9+/-4.5 kBq m(-3) in Sanandaj and 46.5+/-11.5 kBq m(-3) in Tehran with an overall national mean value of 21+/-8.3 kBq m(-3). The 222Rn concentrations in surface waters ranged from less than 1 to 7 kBq m(-3) with a mean value of 3.9+/-1.9 kBq m(-3). The mean concentration of 222Rn in tap water in different parts of Tehran is 3.8+/-1.1 kBq m(-3). The results are presented and discussed in this paper.
authors.affiliation: National Radiation Protection Department and Center for Research on Natural Radiation, Atomic Energy Organization of Iran, Tehran, Islamic Republic of Iran.
authors.forename: M
authors.initials: M
authors.lastname: Sohrabi
authors.forename: N
authors.initials: N
authors.lastname: Alirezazadeh
authors.forename: H
authors.initials: H
authors.lastname: Tajik Ahmadi
mesh_terms: D005843:Geography; D006801:Humans; D007492:Iran; D011886:Radon / Q000032:analysis*; D012588:Scintillation Counting / Q000379:methods; D014504:Urban Health; D014505:Urban Population; D014875:Water Pollutants, Radioactive / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
chemical_list: D014875:Water Pollutants, Radioactive; D011886:Radon