Collective effective dose received by the population of Egypt from building materials

Turtiainen, Tuukka; Din, Khaled Salahel; Klemola, S; Ap, Sihvonen

doi:10.1088/0952-4746/28/2/006

Cited by 12 publications

(8 citation statements)

References 22 publications

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“…The chem i cal con tent of each of ex plored building ma te ri als was ap prox i mated with the el e men tal com po si tion of ce ram ics, pub lished in Turtiainen et al [28]. The at ten u a tion co ef fi cients for gamma ra di a tion of radionuclides in this com pos ite were ob tained us ing the pro gram XCOM [29].…”

Section: Cal Cu La Tionmentioning

confidence: 99%

The dose from radioactivity of covering construction materials in Serbia

Manić

Manic²,

Nikezić

et al. 2015

NUCL TECH RAD PROT

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The indoor dose due to the radiation of ceramic and granite tiles, marble, granite and travertine plates, as well as some components of covering materials, produced in Serbia or imported from other countries, was estimated in the work. Activity concentrations of 226Ra, 232Th, and 40K were measured by the standard gamma-spectrometry system. The lowest content of the radionuclides was found in white marble (ARa = 2 Bq/kg, ATh < 2 Bq/kg, and AK < 3 Bq/kg), while the highest activities were in some granite samples (Balmoral red: ARa = 200 Bq/kg, ATh = 378 Bq/kg, and AK = 1679, and Madura Gold: ARa = 273 Bq/kg, ATh = 20 Bq/kg, and AK = 1456 Bq/kg). The indoor absorbed dose rate in air due to the gamma radiation from covering materials was determined based on the specific absorbed dose rate computed in this work. Concentration of 222Rn that emanated into the indoor space was also calculated from the known 226Ra content. The radiation hazard estimated from the usage of each sample was expressed through the evaluated effective dose. Almost all samples, except one, fulfil the dosimetric criterion for safe use. [Projekat Ministarstva nauke Republike Srbije br. 171021 i br. 171025]

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Section: Cal Cu La Tionmentioning

confidence: 99%

The dose from radioactivity of covering construction materials in Serbia

Manić

Manic²,

Nikezić

et al. 2015

NUCL TECH RAD PROT

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“…River sediments are one of the most important building materials in India like in other countries of the world. It is of great interest to note that mineral based building materials has the highest concentration of radionuclides (8) . River sediments are mineral deposits made up of materials derived from natural materials like rock, soil, biological and anthropogenic inputs that is broken down by the process of weathering and erosion of either igneous or metamorphic rocks which is subsequently transported by water or wind (9) .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of natural radioactivity and its associated health hazard indices of a south Indian river

Krishnamoorthy

Mullainathan²,

Mehra

et al. 2013

Radiation Protection Dosimetry

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The activity concentration of the natural radionuclides (226)Ra, (232)Th and (40)K was measured for sediment samples collected from thirty-three different locations along the Bharathapuzha river basin by using high-resolution gamma-ray spectrometry. The concentrations of the natural radionuclides were found to vary from location to location, and their mean values are 19.6, 82.87 and 19.44% higher than the worldwide mean values of (226)Ra, (232)Th and (40)K, respectively. The value of (232)Th was found to be higher than that of (226)Ra in 82% of the samples collected for this study. The calculated values of indoor gamma dose rate (DIN) ranged between 89.55 and 194.24 nGy h(-1), and the overall mean value is 63.2% higher than the recommended safe and criterion limit by UNSCEAR. The internal and external hazard indices (H(in) and H(ex)), the representative gamma index and alpha index (I(gamma) and I(alpha)), the annual gonad dose equivalent (AGDE) and the excess lifetime cancer risk (ELCR) were also calculated and compared with the international recommended values. Multivariate statistical analyses were also carried out to determine the relation between the natural radionuclides and various radiological parameters.

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“…In the building, it has been pointed out that the highest concentrations of radionuclides are found in mineralbased materials such as stone, sand, bricks, cement and sediments [8].Though these radionuclides are known to be widely distributed in the environment, their concentrations have been found and reported [9] to depend on the geological setting of a particular environment, and such they vary from place to place.…”

Section: Introductionmentioning

confidence: 99%

Natural Radionuclide Concentrations and Radiological Impact Assessment of River Sediments of the Coastal Areas of Nigeria

Oni¹,

Farai²,

Awodugba³

2011

JEP

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This work was carried out to measure the radioactivity level in the coastal areas of Nigeria by gamma counting of river sediment samples and assess the radiological impact associated with the use of the river sediments as building material. The method of gamma spectrometry with a 7.6 cm by 7.6 cm NaI(Tl) detector was employed in determining 40K, 238U and 232Th levels in 95 and 38 sediment samples respectively collected from representative sites in the oil producing and non oil producing coastal areas of Nigeria. Results of the samples assayed showed that the radioactivity concentrations of 40K, 226Ra and 228Ra in the sediment samples of oil producing areas range from 95.4 to 160.0; 7.6 to 31.0 and 9.5 to 41.6 Bq kg–1, respectively. The respective means were calculated as 122.39 ± 47.49; 18.93 ± 12.53 and 29.31 ± 18.67 Bq kg–1. In the sediment samples from the non oil producing areas, the respective mean values are 88.48 ± 8.22, 14.87 ± 3.51 and 16.37 ± 3.87 Bq kg–1. Statistical analysis of the results showed that there is no significant difference between the radionuclide concentration of the sediment samples from different rivers in the oil producing and non oil producing coastal areas, except for 40K. The values of the natural radionuclide concentrations however translate to the determina-tion of the radiological impact assessment values. The values of the radiological assessment indices obtained were ob-served to be lower than limits internationally reported and recommended for building materials. It could therefore be reported that the operations of the oil companies in the coastline, involving use of radioactive materials have not contributed adversely to the radioactivity level of the river sediments and that the use of river sediments as building mate-rial in the coastal areas of Nigeria poses no radiological risk

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Collective effective dose received by the population of Egypt from building materials

Cited by 12 publications

References 22 publications

The dose from radioactivity of covering construction materials in Serbia

The dose from radioactivity of covering construction materials in Serbia

Evaluation of natural radioactivity and its associated health hazard indices of a south Indian river

Natural Radionuclide Concentrations and Radiological Impact Assessment of River Sediments of the Coastal Areas of Nigeria

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