Radioactivity concentrations in soils of the Xiazhuang granite area, China.
The natural radioactivity of soils at the Xiazhuang granite massif of Southern China has been studied. The radioactivities of 55 samples have been measured with a low-background HPGe detector. The radioactivity concentrations of (238)U and (40)K ranged from 40.2 to 442 and from 442 to 913 Bq/kg, respectively, while the radioactivity concentration of (232)Th varied only slightly. In order to evaluate the radiological hazard of the natural radioactivity, the radium equivalent activity (Ra(eq)), the absorbed dose rate (D ), the annual effective dose rate and the external hazard index (H(ex)) have been calculated and compared with the internationally approved values. The study provides background radioactivity concentrations in a granite area, specifically, the area in the vicinity of a uranium mine in Southern China. The data can be used in exploring granite-type uranium deposits.
Yang
Ya-Xin
YX
Department of Physics, Nanjing University, Nanjing 210093, PR China. yxyang63@163.com
Wu
Xin-Min
XM
Jiang
Zhong-Ying
ZY
Wang
Wei-Xing
WX
Lu
Ji-Gen
JG
Lin
Jun
J
Wang
Lei-Ming
LM
Hsia
Yuan-Fu
YF
D000465:Algorithms; D001417:Background Radiation; D001822:Body Burden; D002681:China; D006801:Humans; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011835:Radiation Protection / Q000379:methods*; D011868:Radioisotopes / Q000032:analysis*; D012062:Relative Biological Effectiveness; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D012990:Soil Pollutants, Radioactive / Q000032:analysis*
D011868:Radioisotopes; D012990:Soil Pollutants, Radioactive