Arogunjo A M, Farai I P, Fuwape I A
Department of Physics, Federal University of Technology, Akure, Nigeria.
Radiat Prot Dosimetry. 2004;108(1):73-7. doi: 10.1093/rpd/nch010.
In situ gamma spectroscopy has been employed to characterise natural radiation in the soil at 32 locations in the Delta region of Nigeria. The outdoor gamma dose rates in the air due to 40K, 238U and 232Th in the soil were 1.5 +/- 0.9 nGy h(-1), 6.9 +/- 1.6 nGy h(-1) and 16.3 +/- 3.1 nGy h(-1) respectively. The estimated total annual outdoor effective dose to the people in the region was 31.6 microSv y(-1).
原位伽马能谱已被用于对尼日利亚三角洲地区32个地点土壤中的天然辐射进行表征。土壤中40K、238U和232Th导致的空气中室外伽马剂量率分别为1.5±0.9纳戈瑞每小时、6.9±1.6纳戈瑞每小时和16.3±3.1纳戈瑞每小时。该地区人群估计的年室外有效剂量总量为31.6微希沃特每年。
