用于评估平均有效剂量和辐射危害的土壤样本中天然放射性（镭-226、钍-232和钾-40）研究
STUDY OF NATURAL RADIOACTIVITY (226Ra, 232Th AND 40K) IN SOIL SAMPLES FOR THE ASSESSMENT OF AVERAGE EFFECTIVE DOSE AND RADIATION HAZARDS.
作者信息
Bangotra Pargin, Mehra Rohit, Kaur Kirandeep, Jakhu Rajan
机构信息
Radiation Physics Laboratory, Dr. B.R. Ambedkar National Institute of Technology, Punjab, India.
Radiation Physics Laboratory, Dr. B.R. Ambedkar National Institute of Technology, Punjab, India
出版信息
Radiat Prot Dosimetry. 2016 Oct;171(2):277-281. doi: 10.1093/rpd/ncw074. Epub 2016 Apr 7.
The activity concentration of Ra (radium), Th (thorium) and K (potassium) has been measured in the soil samples collected from Mansa and Muktsar districts of Punjab (India) using NaI (Tikl) gamma detector. The concentration of three radionuclides (Ra, Th and K) in the studied area has been varied from 18±4 to 46±5, 53±7 to 98±8 and 248±54 to 756±110 Bq kg, respectively. Radium equivalent activities (Ra) have been calculated in soil samples for the assessment of the radiation hazards arising due to the use of these soil samples. The absorbed dose rate of Ra, Th and K in studied area has been varied from 8 to 21, 33 to 61 and 9 to 25 nGy h, respectively. The corresponding indoor and outdoor annual effective dose in studied area was 0.38 and 0.09 mSv, respectively. The external and internal hazard has been also calculated for the assessment of radiation hazards in the studied area.
利用碘化钠（铊）γ探测器，对从印度旁遮普邦曼萨和穆克萨尔地区采集的土壤样本中镭（Ra）、钍（Th）和钾（K）的活度浓度进行了测量。研究区域内三种放射性核素（镭、钍和钾）的浓度分别在18±4至46±5、53±7至98±8以及248±54至756±110贝克勒尔/千克之间变化。已计算土壤样本中的镭当量活度（Ra），以评估因使用这些土壤样本而产生的辐射危害。研究区域内镭、钍和钾的吸收剂量率分别在8至21、33至61以及9至25纳戈瑞/小时之间变化。研究区域内相应的室内和室外年有效剂量分别为0.38和0.09毫希沃特。还计算了外部和内部危害，以评估研究区域内的辐射危害。
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