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首页> 外文期刊>Romanian Journal of Biophysics >ASSESSMENT OF NATURAL RADIOACTIVITY LEVELS IN THE SOIL OF DIRE DAWA CITY, ETHIOPIA
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ASSESSMENT OF NATURAL RADIOACTIVITY LEVELS IN THE SOIL OF DIRE DAWA CITY, ETHIOPIA

机译：埃塞俄比亚迪瓦·达瓦市土壤中的自然放射性水平评估

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232/SUPTh, SUP238/SUPU and SUP40/SUPK, in various geological formations of Dire Dawa city, Ethiopia. High resolution gamma ray spectrometry was used to assess the natural radioactivity levels concentration of SUP238/SUPU, SUP232/SUPTh and SUP40/SUPK of soil samples. A total of 16 samples were collected from the city. The result revealed that the mean value of the specific activity ranged from 6.10±0.53 to 30.00±1.35 Bq·kg SUP – 1 /SUP for Uranium-238 (SUP238/SUPU), 12.56±0.73 to 102.46±4.63 Bq·kg SUP – 1 /SUP for Thorium-232 (SUP232/SUPTh) and 98.73±4.53 to 1182.83±49.11 Bq·kg SUP – 1 /SUP for Potassium-40 (SUP40/SUPK), with mean values of 19.97±2.42 Bq·kg SUP – 1 /SUP , 56.38±4.50 Bq·kg SUP – 1 /SUP and 716.59±68.43 Bq·kg SUP – 1 /SUP , respectively. The results of this study revealed an area of low gamma emitting radionuclides, which could not lead to significant health hazard to the exposed people. On average, there are no harmful radiations effects posed to the population who live in the study area;however, there are some spots in which the level of radioactivity is higher than the internationally allowable threshold.
机译：埃塞俄比亚Dire Dawa市的各种地质​​构造中的232 Th， 238 U和 40 K。采用高分辨率γ射线光谱法对土壤样品中 238 U， 232 Th和 40 K的自然放射性水平进行了评估。总共从该城市收集了16个样本。结果表明，铀238（ 238 U）的比活均值范围为6.10±0.53至30.00±1.35 Bq·kg – 1 ，12.56±对于Thorium-232（ 232 Th）为0.73至102.46±4.63 Bq·kg – 1 和98.73±4.53至1182.83±49.11 Bq·kg – 1 40 K）的SUP>，平均值为19.97±2.42 Bq·kg – 1 ，56.38±4.50 Bq·kg – 1 < / SUP>和716.59±68.43 Bq·kg – 1 。这项研究的结果表明，有一个低伽马发射放射性核素区域，该区域不会对暴露人群造成重大健康危害。平均而言，对研究区域的居民没有有害的辐射影响;但是，有些地方的放射性水平高于国际允许的阈值。

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