title: Preliminary investigation of radon concentration in surface water and drinking water in Shenzhen City, South China.
abstract: A radon survey in surface water and drinking water was conducted using a portable degassing system associated with an ionisation chamber AlphaGUARD (PQ2000) for understanding levels of dissolved radon ((222)Rn) concentration in different types of water sources and risk assessment of radon in drinking water in Shenzhen City (SC) with a population of 10 628 900 in 2013, Guangdong Province of China. The measurements show that arithmetic means ± standard deviations of radon ((222)Rn) concentration are 52.05 ± 6.64, 0.29 ± 0.26, 0.15 ± 0.23 and 0.37 ± 0.42 kBq m(-3) in spring water, surface water, large and small public water supplies, respectively. Only radon concentrations of two water samples collected in mountainous areas are more than 11.10 kBq m(-3), exceeding the limit of radon concentration in drinking water stipulated by the national standard of China (GB5749-2006). The annual effective doses due to radon in drinking water were also calculated. The investigation suggests that there are no risks caused by radon in the drinking water in SC.
authors.affiliation: Key Laboratory of Geo-detection, China University of Geosciences, Ministry of Education, Beijing 100083, China School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Li
authors.affiliation: Key Laboratory of Geo-detection, China University of Geosciences, Ministry of Education, Beijing 100083, China School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China npwang@cugb.edu.cn.
authors.forename: Nanping
authors.initials: N
authors.lastname: Wang
authors.affiliation: Key Laboratory of Geo-detection, China University of Geosciences, Ministry of Education, Beijing 100083, China School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China.
authors.forename: Shijun
authors.initials: S
authors.lastname: Li
mesh_terms: D001417:Background Radiation; D002681:China; D060766:Drinking Water / Q000737:chemistry*; D060587:Groundwater / Q000737:chemistry*; D010865:Pilot Projects; D000069079:Radiation Exposure / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods; D011886:Radon / Q000032:analysis*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D060766:Drinking Water; D014875:Water Pollutants, Radioactive; D011886:Radon