Radioactivity of Granitic Rocks From Northern Greece

Papadopoulos, Alex G.; Christofides, G.; Papastefanou, C.; Koroneos, C.; Stoulos, S.

doi:10.12681/bgsg.11675

Cited by 4 publications

(7 citation statements)

References 10 publications

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“…The mean values of 226 Ra, 232 Th, and 40 K observed in this study were lower than the world's average values. Table 2 provides a comparison of the mean values of 232 Th, 226 Ra, and 40 K activity concentrations in marble with those from other countries [29].…”

Section: Activity Concentrationmentioning

confidence: 99%

“…The minimum concentration of 232 Th was 22.9 ± 1.20 Bq/kg for (G-2) (Chinese granite), of 226 Ra was 10.1 ± 1.1 Bq/kg for (G-3) (Indian granite), To assess the radiological risk of the building materials used, it is useful to calculate the radium equivalent activity [29].…”

Section: Activity Concentrationmentioning

confidence: 99%

“…In addition to the external hazard, the internal exposure to radon and its daughter products is quantified by the internal hazard index (H in ), which is given by "Eq. (4)" [29]:…”

Section: Internal Hazard Indexmentioning

confidence: 99%

“…The absorbed dose rate in indoor air due to gamma ray emission from activity concentrations of 226 Ra, 232 Th, and 40 K were calculated using "Eq. (5)" [29]:…”

Section: Absorbed Dose Ratementioning

confidence: 99%

“…Therefore, the effective dose rate in mSv/y was estimated using "Eq. (6)" [12,29] AED (mSv/y) = D (nGy/h) × 8760 (h/y)…”

Section: Annual Effective Dosementioning

confidence: 99%

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Evaluation of radionuclide concentrations and associated radiological hazard in marble indices and granite used as building materials in Al-Madinah Al-Munawarah

Mohamed

Algamdi

Al-shamani

2016

Journal of Taibah University for Science

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Sixty samples of different marble and granite tiles used as building materials, from local and foreign origins, were collected from different factories in the Al-Madinah Al-Munawarah region of Saudi Arabia. Natural radioactivity of the U-Th series and 40 K in the samples were measured using an HPGE detector to conduct gamma-ray spectrometry. From the measured ␥-ray spectra, the activity concentrations for different marble samples of Turkish, Egyptian, and Omani origin were 232 Th (0.10 ± 0.07, 0.9 ± 0.09, 0.31 ± 0.06 Bq/kg), 226 Ra (5.7 ± 0.3, 7.3 ± 0.40, 2.0 ± 0.1 Bq/kg), and 40 K (0.9 ± 0.2, 0.96 ± 0.1, 0.8 ± 0.09 Bq/kg),

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Section: Activity Concentrationmentioning

confidence: 99%

Section: Activity Concentrationmentioning

confidence: 99%

“…In addition to the external hazard, the internal exposure to radon and its daughter products is quantified by the internal hazard index (H in ), which is given by "Eq. (4)" [29]:…”

Section: Internal Hazard Indexmentioning

confidence: 99%

“…The absorbed dose rate in indoor air due to gamma ray emission from activity concentrations of 226 Ra, 232 Th, and 40 K were calculated using "Eq. (5)" [29]:…”

Section: Absorbed Dose Ratementioning

confidence: 99%

“…Therefore, the effective dose rate in mSv/y was estimated using "Eq. (6)" [12,29] AED (mSv/y) = D (nGy/h) × 8760 (h/y)…”

Section: Annual Effective Dosementioning

confidence: 99%

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Evaluation of radionuclide concentrations and associated radiological hazard in marble indices and granite used as building materials in Al-Madinah Al-Munawarah

Mohamed

Algamdi

Al-shamani

2016

Journal of Taibah University for Science

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Analysis of the Radiological, Mineralogical and Long-Term Sustainability of Several Commercial Aswan Granites Used as Building Materials

et al. 2022

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The widespread usage of granite in the building sector motivated us to conduct this research and examine the material’s sustainability in terms of the investigated characteristics. The purpose of this paper is to discuss the statistical analysis results for the mineralogical impact on radiological hazards indices, such as the equivalent of radium, absorbed gamma dose rate, annual effective dose, internal and external hazard indices, as well as the gamma-ray index, that were calculated to estimate the environmental risks associated with these granites used as building materials, to protect the public from excessive radioactivity exposure. We focused primarily on statistical significance at a 95% confidence level. We employed a non-parametric test (Kruskal–Wallis Test) rather than a one-way ANOVA, to determine the statistical significance of the samples due to the lack of homogeneity or normality among them. To assess the difference between the samples, we used the Mann–Whitney Test on each pair of samples. Additionally, Pearson correlation coefficients for all the mineralogical results are computed. The presence of K-rich minerals (Kefeldspars, biotite) and accessories such as uranophane, uranothorite, allanite, xenotime, fergusonite, aeschynite, zircon, cassiterite, apatite, and sphene, which are mostly found in granitic rocks, determines the level of natural radioactivity of the investigated granites. Most of the rock samples analyzed have indicators of radioactive dangers that are within the acceptable level range, indicating that they are suitable for use as building materials. On the other hand, some samples have environmental criteria that are higher than international standards, indicating that they are unsuitable for use as construction materials.

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Radiological and Geochemical Assessment of Different Rock Types from Ogun State in Southwestern Nigeria

Olayinka,

Kunle

2023

J Environ Health Sci

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Exposure of the general public, patients, and radiation workers to ionizing radiation must be limited to minimize the risk of harmful biological effects. In 1954, the National Committee on the Radiation Protection (NCRP) proposed a concept that radiation exposure should be kept as low as reasonably achievable (ALARA) concept. This concept is accepted by all regulatory agencies including International Commission on Radiological Protection (ICRP), the World Health Organization (WHO), and the European Commission (EC). When human body is exposed to ionizing radiation, it damages living systems by ionizing atoms composing of the molecular structures, causing abnormalities in the functioning of the living cell and

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Radioactivity of Granitic Rocks From Northern Greece

Abstract: Forty-nine samples from several plutons in northern Greece UNSCEAR (2000). Therefore, at least from radiological point of view and for the investigated rocks, the use of granites from northern Greece as building materials is recommended.

Cited by 4 publications

References 10 publications

Evaluation of radionuclide concentrations and associated radiological hazard in marble indices and granite used as building materials in Al-Madinah Al-Munawarah

Evaluation of radionuclide concentrations and associated radiological hazard in marble indices and granite used as building materials in Al-Madinah Al-Munawarah

Analysis of the Radiological, Mineralogical and Long-Term Sustainability of Several Commercial Aswan Granites Used as Building Materials

Radiological and Geochemical Assessment of Different Rock Types from Ogun State in Southwestern Nigeria

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