Natural radioactivity in reservoir sediment near an industrial park of northwest China.
The activity concentration of natural radionuclides in the sediment of a reservoir near an industrial park of northwest China was determined using gamma ray spectrometry. The activity concentrations of (226)Ra, (232)Th and (40)K in the investigated samples range from 30.2 to 37.5, 56.5 to 79.8 and 785.6 to 940.3 Bq kg(-1) with an average of 33.2, 71.8 and 866.2 Bq kg(-1), respectively, which are higher than the corresponding activity concentrations in the control sample. Radium equivalent activity, external hazard index, internal hazard index, indoor air absorbed dose rate and annual effective dose rate were calculated to assess the radiation hazards associated with the use of this sediment in the construction of dwellings. It was concluded that the radiation levels in the reservoir sediment do not give rise to radiological health concerns and the sediment can be safely used in the construction of buildings.
School of Tourism and Environment, Shaanxi Normal University, Xi'an 710062, People's Republic of China.
Xinwei
X
Lu
Huiyun
H
Pan
Chunhui
C
Ren
Linna
L
Yang
D002681:China; D019015:Geologic Sediments / Q000737:chemistry*; D007221:Industry; D011197:Potassium Radioisotopes / Q000032:analysis; D011834:Radiation Monitoring / Q000379:methods*; D011868:Radioisotopes / Q000032:analysis*; D011883:Radium / Q000032:analysis; D013051:Spectrometry, Gamma; D013910:Thorium / Q000032:analysis
D011197:Potassium Radioisotopes; D011868:Radioisotopes; D013910:Thorium; D011883:Radium