Radioactivity and health risk assessments in cement samples commonly used as construction materials in the case of South Gondar Zone, Ethiopia

Abate, Tadesse

doi:10.1051/epjn/2022012

EPJ Nuclear Sci. Technol.

2022

DOI: 10.1051/epjn/2022012

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Radioactivity and health risk assessments in cement samples commonly used as construction materials in the case of South Gondar Zone, Ethiopia

Tadesse Abate¹

Abstract: This work deals with the measurement of the radioactivity concentrations from different cement samples collected from the South Gondar Zone, Ethiopia. The measurement of naturally occurring radioisotopes and radiation health impact indices caused by these nuclides in cement samples are indisputable in the dwellings. Specifically, the average concentrations for 226Ra, 232Th and 40K were estimated as 76.53, 81.67, and 407 Bq kg−1, respectively. It was seen that all the measured mean values were greater than the … Show more

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Cited by 3 publications

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Sediment Radioactivity Levels Determination With the Health Risk Assessments in Chefa River Basin

Abate

Eshete

2023

Radiation Protection Dosimetry

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The activities of the naturally occurring radionuclides 232Th, 226Ra, 40K and 238U of the shore sediments in the South Gondar Zone were determined and used to evaluate radiation hazards in the study spots. The activities of 232Th, 226Ra, 40K and 238U range from 46 to 179, 62 to 140, 125 to 449 and 72–156 Bq/kg, with the overall average of 123.07 ± 7.90, 105.34 ± 4.27, 371.38 ± 13.53 and 115.52 ± 4.62 Bq/kg, respectively. These were analogous to concentrations of other states in worldwide. We recommend to all the concerned bodies about the environment that the farmers require use the necessary radiation protection method before deploying them for farming (irrigation) activities and preparing for construction. Therefore, accommodating a permanent protection method by talking to the concerning bodies (e.g. Ministry of Agriculture and Ministry of Health) should be taken.

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Sediment Radioactivity Levels Determination With the Health Risk Assessments in Chefa River Basin

Abate

Eshete

2023

Radiation Protection Dosimetry

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Assessment of Natural Radioactivity in Cements (Local and Imported) in Mali

Coulibaly,

Nafogou,

Kone

et al. 2024

RST

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Background: In this article, the radioactivity concentrations of U-238, Th-232 and K-40 (NORM) and radiological hazard parameters in different types of cements commonly used in Mali and available on the Malian market have been analyzed. The obtained values of NORM concentrations and radiological hazards in seven (07) cements samples will permit to the AMARAP to estimate the exposure (gamma rays) from the buildings and dwellings made by these cements. It will permit also to determine any over exposure (determinist effects which are an immediate tissue reaction due to the high exposition of ionizing radiation) and minimize as well the associated risk due to low doses (stochastic effects). Materials and Methods: The health impact due to the exposure of radionuclides from these cements was evaluated by the determination of specific activity of radionuclides U-238, Th-232 and K-40 using gamma spectrometry analysis. The radiological hazards such as Absorbed Dose Rate (Ḋ) Annual Effective Dose (Ė) Internal and External Dose indexes (Hin and Hex) were evaluated in these cements samples. Results: The range of specific activities for U-238 vary from 21.77 ± 1.50 to 145.31 ± 7.70 Bq/kg, for Th-232 from 8.85 ± 0.52 to 73.56 ± 3.82 Bq/kg and for K-40 from 104.27 ± 5.63 to 351.97 ± 18.08 Bq/kg. The peak of U-238 wasn’t detected only in one (01) sample (CIM04). The highest value of specific activity was reported in sample CIM07 (DANGOTE). The values of radiological hazard such as Ḋ, Ė, Hin and Hex from this work were within the dose criteria limits given by international organizations (ICRP and UNSCEAR) and national standards. Conclusion: This study shows the analyzed cements do not pose any significant source of radiation hazard and are safe for use in the construction of dwellings even if the risk (stochastic effect) associated with low dose exists. Special attention and more analyzes must be done on them for more protection of public health.

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Evaluation of Radiation Rates and Health Hazards from Different Cement Types in Pakistan

Waseem,

Younis,

Salouci

et al. 2024

Atmosphere

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The raw materials of cement contain radioactive elements that come from natural sources. Members of the decay chains of uranium, thorium, and potassium radioisotope 40K are the primary sources of this radioactivity. The natural radionuclide concentration levels in cement differ greatly depending on different geographic areas. To estimate the radionuclides concentration in cement specimens from twelve diverse Pakistani companies, gamma-ray spectroscopy analysis was used in the study. 226Ra, 232Th, and 40K had activity concentration levels ranging from 18.08 to 43.18 Bq/kg, 16.73 to 23.53 Bq/kg, and 14.24 to 315.22 Bq/kg, respectively. The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) threshold for the 226Ra was surpassed by five of the studied samples. The indoor and outdoor dose rates as well as different radiological health hazard indices were also examined. The Indoor Absorbed Dosage (Din) for some of the samples exceeded the permissible limit. These samples also had a high Indoor Effective Lifetime Cancer Risk (ELCR) factor, which makes them unsafe for interior construction purposes. The outdoor dosages as well as the hazard indices were well within the permitted ranges. The outdoor ELCR factor is low for all the cement brands, which makes them safe for exterior construction purposes. The findings were compared with published data from other countries around the globe. Finally, a thorough statistical analysis was performed and Pearson’s Correlation Coefficient (r) exhibited a very strong correlation between the different outdoor and indoor radiological health hazard indices.

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Radioactivity and health risk assessments in cement samples commonly used as construction materials in the case of South Gondar Zone, Ethiopia

Cited by 3 publications

References 35 publications

Sediment Radioactivity Levels Determination With the Health Risk Assessments in Chefa River Basin

Sediment Radioactivity Levels Determination With the Health Risk Assessments in Chefa River Basin

Assessment of Natural Radioactivity in Cements (Local and Imported) in Mali

Evaluation of Radiation Rates and Health Hazards from Different Cement Types in Pakistan

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