Abstract：
:Building materials contain natural radionuclides (226)Ra, (232)Th and (40)K, which cause direct radiation exposure of the public. The concentrations of (226)Ra, (232)Th and (40)K in commonly used building materials of Urumqi, China have been analysed using gamma-ray spectrometry. The concentrations of (226)Ra, (40)K and (232)Th in the studied building materials range from 19.8 to 87.4, from 273.3 to 981.2 and from 11.6 to 47.7 Bq kg(-1), respectively. The radium equivalent activity (Raeq), gamma index (Iγ) and alpha index (Iα) were calculated to assess the radiation hazards to people living in dwellings made of the materials studied. The calculated Raeq values of all the building materials are lower than the limit of 370 Bq kg(-1) for building materials. The values of Iγ and Iα of all the building materials are less than unity. The study shows that these materials may be safely used as construction materials and do not pose significant radiation hazards.
journal_name
Radiat Prot Dosimetryjournal_title
Radiation protection dosimetryauthors
Ding X,Lu X,Zhao C,Yang G,Li Ndoi
10.1093/rpd/nct002subject
Has Abstractpub_date
2013-07-01 00:00:00pages
374-9issue
3eissn
0144-8420issn
1742-3406pii
nct002journal_volume
155pub_type
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