Sohrabi M, Alirezazadeh N, Tajik Ahmadi H
National Radiation Protection Department and Center for Research on Natural Radiation, Atomic Energy Organization of Iran, Tehran, Islamic Republic of Iran.
Health Phys. 1998 Oct;75(4):417-21. doi: 10.1097/00004032-199810000-00009.
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.
作为一项全国性公众天然辐射暴露量测定计划的一部分，采用液体闪烁计数技术对23个省级中心的生活用水（包括地下水和地表水）中的222Rn浓度进行了测定。地下水中222Rn的最低和最高平均浓度分别为：在萨南达杰为7.9±4.5 kBq m(-3)，在德黑兰为46.5±11.5 kBq m(-3)，全国总体平均值为21±8.3 kBq m(-3)。地表水中222Rn浓度范围为小于1至7 kBq m(-3)，平均值为3.9±1.9 kBq m(-3)。德黑兰不同地区自来水中222Rn的平均浓度为3.8±1.1 kBq m(-3)。本文给出并讨论了这些结果。
