Radioactive analysis and radiological hazards in different types of Egyptian cement

Shousha, Hany A.

doi:10.1080/10420150600858371

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Some studies present the concentration values of 226 Ra only and do not consider the 238 U presence taking into account the fact that 98.5% of the radiological effects of the uranium series are produced by radium and its daughters [19]. The activity concentrations of Ra, presented here, fall within the range reported by other authors.…”

Section: Resultssupporting

confidence: 71%

Investigation on 226Ra, 238Th, 4040K and 137Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia

Alharbi¹

2016

JEP

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Knowledge of radioactivity present in polishing materials enables one to assess any possible radiological risks to human health. In this work, the radioactivity due to the presence of 226 Cs. Radium equivalent activity due to the natural radioactivity of the investigated samples ranged from 51.37 to 1.24 Bq/l. This value is less than the recommended values in the established standards. The evaluated data were compared with the literature data. Our results indicate that no significant radiological hazards arise from using investigated samples hence quite safe to be used as polishing materials.

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Section: Resultssupporting

confidence: 71%

Investigation on 226Ra, 238Th, 4040K and 137Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia

Alharbi¹

2016

JEP

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“…The calibration efficiency for the different energy peaks was measured using IAEA reference samples. The energies of 609.31 keV ( 214 Bi), 1120.3 keV ( 214 Bi), and 1764.5 keV ( 214 Bi) were used to determine 238 U activity while energies of 583.19 keV ( 208 Tl) and 911.1 keV ( 238 Ac) were used for the determination of 232 Th and the 1460.8 keV g-ray for 40 K [14,15]. The absorbed dose rates D, at 1.0 m above the ground were calculated using the relation [16]:…”

Section: Methodsmentioning

confidence: 99%

“…Using the conversion factor of 0.70Sv Á Gy À1 [15], the dose equivalents in mSv Á y À1 were calculated.…”

Section: Methodsmentioning

confidence: 99%

Gamma Ray Activity in Raw Materials and the End Product from the West African Portland Cement PLC, Ewekoro, South Western Nigeria

Awodugba

Adelabu

Awodele

et al. 2007

Indoor and Built Environment

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Assessment of gamma ray activity in raw materials and the end product in `Elephant cement' from the West African Portland Cement PLC is carried out. Raw materials are collected from the company and are analyzed using gamma-ray spectrometry. The concentrations of 40K, 238U, and 232Th are highest in limestone and least in red alumina. For example, limestone has a 40K concentration of 904.42 ± 39 Bq · kg-1 while red alumina has 313.84 ± 11 Bq · kg-1. The concentration of 238U in limestone is 296.86 ± 12 Bq · kg-1 as compared to 139.44 ± 6 Bq · kg-1 in red alumina. 232Th concentration in limestone is 171.14 ± 12 Bq · kg-1 while in red alumina it is 45.65 ± 2 Bq · kg-1 . The mean activities measured for 40K, 238U, and 232Th are 667.69 ± 24, 323.48 ± 10, and 95.91 ± 4, respectively, while its corresponding mean absorbed dose rate in air at 1 m above the ground was calculated to be 264.96 nGy · h-1 or 2.321 mSv · y-1. The finished product (cement) has a mean absorbed dose rate of 282 nGy · h-1 and an effective dose equivalent of 2.471mSv · y-1. The calculated absorbed doses in nGy · h-1 and mSv · y-1 show that Elephant cement has higher activities of the isotopes than the permissible level suggested by ICRP (80 nGy · h-1or 0.7 mSv · y-1).

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Evaluation of natural radioactivity and radiological hazards associated with Nepalese cement

Shrestha,

Shah

et al. 2023

J Radioanal Nucl Chem

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Radioactive analysis and radiological hazards in different types of Egyptian cement

Cited by 7 publications

References 9 publications

Investigation on <sup>226</sup>Ra, <sup>238</sup>Th, 40<sup>40</sup>K and <sup>137</sup>Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia

Investigation on <sup>226</sup>Ra, <sup>238</sup>Th, 40<sup>40</sup>K and <sup>137</sup>Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia

Gamma Ray Activity in Raw Materials and the End Product from the West African Portland Cement PLC, Ewekoro, South Western Nigeria

Evaluation of natural radioactivity and radiological hazards associated with Nepalese cement

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Radioactive analysis and radiological hazards in different types of Egyptian cement

Cited by 7 publications

References 9 publications

Investigation on &lt;sup&gt;226&lt;/sup&gt;Ra, &lt;sup&gt;238&lt;/sup&gt;Th, 40&lt;sup&gt;40&lt;/sup&gt;K and &lt;sup&gt;137&lt;/sup&gt;Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia

Investigation on &lt;sup&gt;226&lt;/sup&gt;Ra, &lt;sup&gt;238&lt;/sup&gt;Th, 40&lt;sup&gt;40&lt;/sup&gt;K and &lt;sup&gt;137&lt;/sup&gt;Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia

Gamma Ray Activity in Raw Materials and the End Product from the West African Portland Cement PLC, Ewekoro, South Western Nigeria

Evaluation of natural radioactivity and radiological hazards associated with Nepalese cement

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Product

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Investigation on <sup>226</sup>Ra, <sup>238</sup>Th, 40<sup>40</sup>K and <sup>137</sup>Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia

Investigation on <sup>226</sup>Ra, <sup>238</sup>Th, 40<sup>40</sup>K and <sup>137</sup>Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia