Legasu Mekuanint Lemlem, Chaubey A K
Adama Science & Technology University Department of Applied Physics, Adama, Ethiopia.
Addis Ababa University, Department of Physics, Nuclear Physics Stream, Addis Ababa, Ethiopia.
Heliyon. 2022 Mar 7;8(3):e09066. doi: 10.1016/j.heliyon.2022.e09066. eCollection 2022 Mar.
The eight most common construction materials in Dessie City were collected in order to determine the amount of natural radiation released and its effects on humans. This is the first time that such research has been conducted. A B13010 Gamma-ray spectrometry was used to determine the concentration of the daughter element photo peak (High Purity Germanium detector). These studies can be used to track changes in radioactivity caused by industrial and other human activities. The mean radioactivity concentrations of Ra, Th, and K were calculated to be 26.59 ± 3.26, 26.59 ± 2.76, and 115.65 ± 2.73 Bq kg, respectively. The calculated Radium equivalent activity (Raeq) and absorbed dose were lower than the global average. The estimated annual effective dose equivalent was 0.08 ± 0.01 mSv y. External and internal radiation hazard indices (Hex and Hin), activity utilization indices, alpha indices, and gamma representative indices are all lower than the world's recommended standards. The mean of the ELCR is lower than the global mean. The annual effective dose equivalent is slightly above the global average.
为了确定天然辐射的释放量及其对人体的影响，收集了德西市八种最常见的建筑材料。这是首次进行此类研究。使用B13010伽马射线能谱仪（高纯锗探测器）来测定子元素光峰的浓度。这些研究可用于追踪由工业和其他人类活动引起的放射性变化。镭、钍和钾的平均放射性浓度经计算分别为26.59±3.26、26.59±2.76和115.65±2.73贝克勒尔/千克。计算得出的镭当量活度（Raeq）和吸收剂量低于全球平均水平。估计的年有效剂量当量为0.08±0.01毫希沃特/年。外照射和内照射危害指数（Hex和Hin）、活度利用指数、α指数和γ代表性指数均低于世界推荐标准。等效镭含量（ELCR）的平均值低于全球平均值。年有效剂量当量略高于全球平均水平。
