Assessment of radiological contamination due to gold mining in soil and food crops of Babban Tsauni, Gwagwalada, Nigeria.

IF 0.8 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Radiation protection dosimetry Pub Date : 2024-12-06 DOI:10.1093/rpd/ncae207

Kafayat Abdulrasheed Odelami, Mark Omotola Afolayan Oladipo, Michael Akor Onoja, Yahaya Musa, Saudat Olabisi Aremu

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Abstract

This work assessed the activity concentrations of 238U(226Ra), 232Th, and 40K and their associated radiological risks due to exposure to soil and consumption of food crops in Babban Tsauni artisanal gold mine, Gwagwalada, Nigeria, using the gamma spectrometry technique. The mean activity concentrations of 226Ra, 232Th, and 40K in the mine soil were 60.2 ± 9.9, 161.4 ± 16.2, and 664.6 ± 138.2, while they were 46.4 ± 4.9, 79.9 ± 39.3, 266.4 ± 185.4 for tubers and 46.9 ± 15.7, 100.5 ± 35.8, 311.4 ± 132.7 (Bq/kg) for grains, respectively. The results reveal that the activity concentrations of radionuclides in all samples exceeded the recommended values set by United Nations Scientific Committee on the Effects of Atomic Radiation (33, 45, and 420 Bq/kg) except 40K, which fell within the acceptable limit in all food crop sample types. Estimated results for radiological hazard parameters, radium equivalent, annual effective dose due to ingestion, and excess life cancer risk were within safe limits, while the annual effective dose due to external gamma radiation in soil and annual gonadal equivalent dose were significantly high in all investigated samples; these call for constant radiological monitoring.

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评估尼日利亚 Gwagwalada 的 Babban Tsauni 土壤和粮食作物中因金矿开采造成的放射性污染。

这项研究利用伽马能谱仪技术，评估了尼日利亚 Gwagwalada 的 Babban Tsauni 手工金矿土壤中 238U（226Ra）、232Th 和 40K 的放射性活度浓度，以及因接触土壤和食用粮食作物而产生的相关辐射风险。矿区土壤中 226Ra、232Th 和 40K 的平均放射性活度浓度分别为 60.2 ± 9.9、161.4 ± 16.2 和 664.6 ± 138.2，而块茎和谷物的放射性活度浓度分别为 46.4 ± 4.9、79.9 ± 39.3 和 266.4 ± 185.4（Bq/kg）。结果显示，除 40K 外，所有样本中放射性核素的放射性活度浓度都超过了联合国原子辐射影响问题科学委员会设定的建议值（33、45 和 420 Bq/kg），所有粮食作物样本中的放射性活度浓度都在可接受范围内。放射性危害参数、镭当量、摄入导致的年有效剂量和超寿命癌症风险的估计结果均在安全限值范围内，而土壤中外部伽马辐射导致的年有效剂量和年性腺当量剂量在所有调查样本中都明显偏高；这些都要求进行持续的放射性监测。

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

Radiation protection dosimetry 环境科学-公共卫生、环境卫生与职业卫生

CiteScore

1.40

自引率

10.00%

发文量

223

审稿时长

6-12 weeks

期刊介绍： Radiation Protection Dosimetry covers all aspects of personal and environmental dosimetry and monitoring, for both ionising and non-ionising radiations. This includes biological aspects, physical concepts, biophysical dosimetry, external and internal personal dosimetry and monitoring, environmental and workplace monitoring, accident dosimetry, and dosimetry related to the protection of patients. Particular emphasis is placed on papers covering the fundamentals of dosimetry; units, radiation quantities and conversion factors. Papers covering archaeological dating are included only if the fundamental measurement method or technique, such as thermoluminescence, has direct application to personal dosimetry measurements. Papers covering the dosimetric aspects of radon or other naturally occurring radioactive materials and low level radiation are included. Animal experiments and ecological sample measurements are not included unless there is a significant relevant content reason.