埃塞俄比亚贝尼尚古尔古穆兹地区班巴西区表层土壤中天然放射性水平的评估。

IF 2.3 3区 化学 Q3 CHEMISTRY, ANALYTICAL Journal of Analytical Methods in Chemistry Pub Date : 2024-09-18 eCollection Date: 2024-01-01 DOI:10.1155/2024/6633673
Yared Birhane Kidane, Tilahun Tesfaye Deressu, Guadie Degu Belete
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引用次数: 0

摘要

这项研究利用配备高纯锗(HPGe)探测器的伽马射线光谱仪,评估了埃塞俄比亚贝尼山古尔古穆兹地区班巴西区土壤样本中天然放射性核素的浓度。土壤样本中测得的 238U、232Th 和 40K 放射性活度浓度分别为 46.2 ± 2.25 至 88.49 ± 5.73 Bq/kg、73.4 ± 4.12 至 119.65 ± 8.45 Bq/kg、176.78 ± 8.63 至 396.71 ± 25.39 Bq/kg。238U 和 232Th 的平均浓度分别超过了 32.0 和 45.0 Bq/kg 的全球推荐人口加权平均值,而 40K 的平均浓度则低于 420.0 Bq/kg 的推荐值。计算得出的平均吸收剂量率为 91.6 ± 5.1 nGy/h,高于建议的安全值 59 nGy/h。室内和室外照射的年均有效剂量当量分别为 2.65 ± 0.14 mSv/y 和 0.66 ± 0.1 mSv/y。所有土壤样本的内部危害指数、外部危害指数和伽马指数的计算平均值分别为 0.72 ± 0.05、0.55 ± 0.02 和 0.72 ± 0.02,均低于建议的安全阈值 1。这些结果表明,在土壤样本中观察到的放射性浓度超过了安全水平,表明有必要对放射性水平进行进一步调查,并对高本底辐射的潜在危害进行流行病学研究。
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Evaluation of Natural Radioactivity Level in Surface Soil from Bambasi District in Benishangul Gumuz Region, Ethiopia.

The study assessed the concentration of natural radionuclides in soil samples from the Bambasi district in Ethiopia's Benishangul Gumuz region using a gamma-ray spectrometer equipped with a high-purity germanium (HPGe) detector. The measured activity concentrations of 238U, 232Th, and 40K in soil samples varied from 46.2 ± 2.25 to 88.49 ± 5.73 Bq/kg, 73.4 ± 4.12 to 119.65 ± 8.45 Bq/kg, and 176.78 ± 8.63 to 396.71 ± 25.39 Bq/kg, respectively. The average concentration of 238U and 232Th exceeded the recommended worldwide population weighted average values of 32.0 and 45.0 Bq/kg, respectively, while the average concentration of 40K was below the recommended value of 420.0 Bq/kg. The mean absorbed dose rate was calculated to be 91.6 ± 5.1 nGy/h, which is above the recommended safe value of 59 nGy/h. The average annual effective dose equivalents for indoor and outdoor exposure were determined to be 2.65 ± 0.14 mSv/y and 0.66 ± 0.1 mSv/y, respectively. The calculated mean values of the internal hazard index, external hazard index, and gamma index across all soil samples were 0.72 ± 0.05, 0.55 ± 0.02, and 0.72 ± 0.02, respectively, all below the recommended safe threshold of one. These findings suggest that the activity concentrations observed in the soil samples exceed safe levels, indicating the necessity for further investigation into radioactivity levels and epidemiological studies regarding potential hazards from high background radiation.

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来源期刊
Journal of Analytical Methods in Chemistry
Journal of Analytical Methods in Chemistry CHEMISTRY, ANALYTICAL-ENGINEERING, CIVIL
CiteScore
4.80
自引率
3.80%
发文量
79
审稿时长
6-12 weeks
期刊介绍: Journal of Analytical Methods in Chemistry publishes papers reporting methods and instrumentation for chemical analysis, and their application to real-world problems. Articles may be either practical or theoretical. Subject areas include (but are by no means limited to): Separation Spectroscopy Mass spectrometry Chromatography Analytical Sample Preparation Electrochemical analysis Hyphenated techniques Data processing As well as original research, Journal of Analytical Methods in Chemistry also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.
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