Monitoring of natural radionuclides in water samples from LASU aquaculture and water plant.

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-10-03 DOI:10.1016/j.apradiso.2025.112225

Mostafa Y A Mostafa, Hyam Khalaf, Olaoye Morohunfoluwa Adeola, Kugbere Emumejaye, Peter Oluwadamilare Olagbaju, Oyebisola Lawal, Howaida Mansour

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Abstract

The purpose of this study is to measure and evaluate the radionuclide concentration in fifteen samples of water factory and fishery farm the water treatment facilities and fishponds at Lagos State University's Ojo Campus. After being placed in sterile 75 cl containers, these samples were brought to the lab for gamma spectroscopy-based radionuclide analysis. The activity concentration of potassium-40 (⁴⁰K), radium-226 (²²⁶Ra), and thorium-232 (²³²Th) ranged from 0.027 Bq/mL to 0.141 Bq/mL, 0.021Bq/mL to 0.082 Bq/mL and 0.021Bq/mL to 0.105 Bq/mL, with average value of 0.068 Bq/mL, 0.039 Bq/mL and 0.089 Bq/mL, respectively. All these values were found to be well below the maximum contaminant level (MCL) of 0.56 Bq/L for alpha emitters like ²³²Th and the Environmental Protection Agency's (EPA) safety threshold of 4 millisieverts (mSv) per year for beta and photon emitters, including ⁴⁰K. This suggests that the fish population is not at risk from radioactivity in the water. Additionally, in order to assess any possible health risks related to consumption, the total annual effective dose from the samples was also estimated, and found to range from 4.08 to 15.67 μSv/year with mean value 9.4 ± 3 μSv/year, that falls within the recommended the World Health Organization's (WHO) recommended limit of 0.1 mSv/year (100 μSv/year) for radionuclide ingestion from drinking water.

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LASU水产养殖和水厂水样天然放射性核素的监测。

本研究的目的是测量和评价拉各斯州立大学Ojo校区15个水厂、渔场、水处理设施和鱼塘样品中的放射性核素浓度。在放入无菌75毫升容器后，这些样品被带到实验室进行基于伽马能谱的放射性核素分析。钾-40 （40K）、镭-226 （226Ra）和钍-232 （232Th）的活度浓度分别为0.027 ~ 0.141 Bq/mL、0.021 ~ 0.082 Bq/mL和0.021 ~ 0.105 Bq/mL，平均值分别为0.068、0.039和0.089 Bq/mL。所有这些数值都被发现远远低于像232Th这样的α排放者的最大污染物水平（MCL） 0.56 Bq/L，以及环境保护署（EPA）对β和光子排放者（包括40K）每年4毫西弗（mSv）的安全阈值。这表明鱼类种群不会受到水中放射性物质的威胁。此外，为了评估与食用放射性核素有关的可能的健康风险，还估算了样品的年有效总剂量，发现其范围为4.08 ~ 15.67 μSv/年，平均值为9.4±3 μSv/年，符合世界卫生组织（WHO）建议的饮用水放射性核素摄入量0.1 mSv/年（100 μSv/年）的建议限值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.