Evaluation of radioactivity levels and hazard indices of Th-232, Ra-226 and K-40 in sediment and water samples of Lake Victoria, Jinja, Uganda DOI Creative Commons
Afam Uzorka, Ademola Olatide Olaniyan, Oluwole Akiyode

и другие.

Discover Environment, Год журнала: 2024, Номер 2(1)

Опубликована: Окт. 23, 2024

This study evaluates the levels of natural radioactivity in sediment and water samples from Lake Victoria Jinja, Uganda, with a focus on radionuclides potassium-40 (40 K), radium-226 (226Ra), thorium-232 (232Th). We investigated four distinct zones around lake: fishing (Zone A), farming B), domestic/livestock C), control zone D). A total 15 were collected analyzed. Sediment obtained using gravity corer, maximum penetration depth 50 cm. 40 K ranged 170.479 to 524.883 Bqkg−1 across all zones, 226Ra ranges 1.51 56.78 232Th 18.18 73.10 zones. concentrations highest zone, likely due use nitrogen, phosphorus, potassium (NPK) fertilizers. also elevated suggesting potential contributions phosphate Absorbed dose rates varied ranging 28.33 58.17 nGyh-1. The measured absorbed within global average 59 nGyh−1. effective annual rate 0.35 0.91 mSvy−1 Effective did not exceed United Nations Scientific Committee Effects Atomic Radiation (UNSCEAR) recommended limit 1 mSv y−1, indicating low risks public health radioactivity. external index was below safety threshold, minimal risks. In samples, gross alpha beta activity Zone B had concentration (0.64 BqL−1) (0.72 BqL−1), while lowest for both (0.16 (0.25 concentrations. Gross generally higher than activity, reflecting anthropogenic influences. Most UNSCEAR limits drinking quality, except areas affected by agricultural runoff. demonstrates that sediments exhibit varying naturally occurring influenced practices, overall radiation exposure remains safe limits. Continuous monitoring regulatory measures are essential maintain these mitigate increasing activities.

Язык: Английский

Prediction Models for Radiological Characterization of Natural Aggregates Based on Chemical Composition and Mineralogy DOI Open Access
A. Caño, M.M. Alonso, Alicia Pachón

и другие.

Materials, Год журнала: 2025, Номер 18(6), С. 1369 - 1369

Опубликована: Март 20, 2025

The radiological characterization of aggregates used in construction materials is essential to determine their suitability from a protection perspective and ensure safety for health the environment. While activity concentrations radionuclides present are typically determined using gamma spectrometry, an alternative approach involves development statistical methods predictive models derived chemical composition material. A total 39 various types (siliceous, carbonatic, volcanic, granitic) have been analyzed, correlating compositions obtained through X-ray fluorescence (XRF) with natural measured via spectrometry principal component analysis (PCA). results allowed observation inversely proportional relationship between grouping siliceous carbonatic content radionuclides. However, set granitic showed strong correlation radioactive series uranium, thorium, 40K. Conversely, radionuclide volcanic was independent composition. PCA facilitated different multiple regression analysis. parameters proposed were related typical mineralogy each grouping, ranging primary minerals such as feldspars accessory anatase, apatite, pyrolusite. Finally, validated samples those models, achieving RSD (%) values ≤ 30% 50% 226Ra, 232Th(212Pb), 40K, well estimated ACI.

Язык: Английский

Процитировано

1
Environmental and public health risk management, remediation and rehabilitation options for impacts of radionuclide mining DOI Creative Commons
N. Eddy,

O. Igwe,

Ifeanyi Samson Eze

и другие.

Discover Sustainability, Год журнала: 2025, Номер 6(1)

Опубликована: Март 26, 2025

Язык: Английский

Процитировано

1
Source specific sedimentary response towards the differential anthropogenic impacts in terms of potentially toxic elements in an urban river DOI

Md. Samium Basir,

Rahat Khan, Sayma Zahan Akhi

и другие.

Marine Pollution Bulletin, Год журнала: 2024, Номер 203, С. 116425 - 116425

Опубликована: Май 4, 2024

Язык: Английский

Процитировано

5
Influencing factors of groundwater 238U, 232Th, 40K, and rare earth element contamination: Insights from the two-dimensional Monte Carlo simulation of radiological risks DOI
Jelena Vesković, Antonije Onjia

Marine Pollution Bulletin, Год журнала: 2025, Номер 213, С. 117682 - 117682

Опубликована: Фев. 17, 2025

Язык: Английский

Процитировано

0
Potentially Toxic Elemental Dispersion from the Brick Kilns: Preliminary Exploration of Mechanistic Pathways DOI

Md. Kawsaruzzaman,

Rahat Khan,

Muhibul Munim

и другие.

Archives of Environmental Contamination and Toxicology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 28, 2025

Язык: Английский

Процитировано

0
Investigation of natural radionuclide and associated radiological parameters of selected construction materials used in Nepal DOI
Devendra Raj Upadhyay, Buddha Ram Shah, Suffian Mohamad Tajudin

и другие.

Environmental Monitoring and Assessment, Год журнала: 2025, Номер 197(6)

Опубликована: Май 8, 2025

Язык: Английский

Процитировано

0
Natural radionuclide concentrations in rock samples from central and far-western Nepal with associated radiological hazards DOI
Devendra Raj Upadhyay,

Janak Raj Bhatta,

Bal Vikram Khatri

и другие.

Journal of Radioanalytical and Nuclear Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Май 27, 2025

Язык: Английский

Процитировано

0
Exploring the alteration of environmental radioactivity in terms of compositional elements of heavy minerals in an anthropogenically affected urban river: Radiological and ecological risks assessment DOI
Sayma Zahan Akhi, Rahat Khan,

Md. Samium Basir

и другие.

Marine Pollution Bulletin, Год журнала: 2024, Номер 206, С. 116694 - 116694

Опубликована: Июль 14, 2024

Язык: Английский

Процитировано

2
Evaluation of radioactivity levels and hazard indices of Th-232, Ra-226 and K-40 in sediment and water samples of Lake Victoria, Jinja, Uganda DOI Creative Commons
Afam Uzorka, Ademola Olatide Olaniyan, Oluwole Akiyode

и другие.

Discover Environment, Год журнала: 2024, Номер 2(1)

Опубликована: Окт. 23, 2024

This study evaluates the levels of natural radioactivity in sediment and water samples from Lake Victoria Jinja, Uganda, with a focus on radionuclides potassium-40 (40 K), radium-226 (226Ra), thorium-232 (232Th). We investigated four distinct zones around lake: fishing (Zone A), farming B), domestic/livestock C), control zone D). A total 15 were collected analyzed. Sediment obtained using gravity corer, maximum penetration depth 50 cm. 40 K ranged 170.479 to 524.883 Bqkg−1 across all zones, 226Ra ranges 1.51 56.78 232Th 18.18 73.10 zones. concentrations highest zone, likely due use nitrogen, phosphorus, potassium (NPK) fertilizers. also elevated suggesting potential contributions phosphate Absorbed dose rates varied ranging 28.33 58.17 nGyh-1. The measured absorbed within global average 59 nGyh−1. effective annual rate 0.35 0.91 mSvy−1 Effective did not exceed United Nations Scientific Committee Effects Atomic Radiation (UNSCEAR) recommended limit 1 mSv y−1, indicating low risks public health radioactivity. external index was below safety threshold, minimal risks. In samples, gross alpha beta activity Zone B had concentration (0.64 BqL−1) (0.72 BqL−1), while lowest for both (0.16 (0.25 concentrations. Gross generally higher than activity, reflecting anthropogenic influences. Most UNSCEAR limits drinking quality, except areas affected by agricultural runoff. demonstrates that sediments exhibit varying naturally occurring influenced practices, overall radiation exposure remains safe limits. Continuous monitoring regulatory measures are essential maintain these mitigate increasing activities.

Язык: Английский

Процитировано

2