A method for the complete analysis of NORM building materials by γ-ray spectrometry using HPGe detectors

Quintana, B.; Pedrosa, María C.; Vázquez-Canelas, L.; Santamaría, Rodrigo; Sanjuán, Miguel Ángel; Puertas, Francisca

doi:10.1016/j.apradiso.2017.07.045

Cited by 12 publications

(3 citation statements)

References 9 publications

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“…The calculation of the dose rate helps to identify the areas with radioactive hazard. The European Council Directive (2013) reported that the level of indoor external exposure to gamma radiation due to building materials should be less than 1 mSv/y, (Quintana et al, 2018). This dose rate associated with the local geology of the sites (Furukawa & Shingaki, 2012).…”

Section: Exposures and Dose Rate Of Radiationmentioning

confidence: 99%

Radiation map for King Abdulaziz University campus and surrounding areas

Aboud

Alqahtani

Aboelnaga

2019

Journal of Radiation Research and Applied Sciences

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King Abdulaziz University (KAU) buildings are expanded to accept more students and research centers. Many of the new buildings were constructed using granitic rocks as building materials. Granitic rock contains radioactive elements (U, Th, K). These elements by time emit radiation which could affect human health. Surely, radiation dose depends on radioactive element percentage in the rock, open or closed area, radiation period,. .. .. .. .etc. When radiation occurs, gamma rays (or radon gas produced by the decay of U and Th) are detected everywhere causing damage in human body cells when being high. For the above-mentioned reasons, Geohazards Research Center, KAU surveyed the whole university campus and surrounding areas using gamma ray spectrometer in order to map the radioactive elements and estimate the dose rate. Results indicate that most of all university buildings have low dose rate while the new buildings have little high dose rate (3.46 mSv/y). These high values are due to the new granitic building materials covering the walls, floors, columns, ponds of agriculture. As the university staff are not staying their lives within the university, fewer hazards occur, but more safety recommendations should be taken into consideration.

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Section: Exposures and Dose Rate Of Radiationmentioning

confidence: 99%

Radiation map for King Abdulaziz University campus and surrounding areas

Aboud

Alqahtani

Aboelnaga

2019

Journal of Radiation Research and Applied Sciences

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“…The objective is to verify the responses obtained by portable detectors used in the field, in order to better guide the actions of emergency response Brazilian Journal of Development, Curitiba, v.8, n.1, p. 3383-3400 jan. 2022 groups [2,3]. In this context, for the quantification of these radionuclides, there are several techniques used to evaluate their concentrations in samples from environmental systems [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Quantitative radionuclide analysis protocol in a radiological and nuclear mobile laboratory / Protocolo de análise quantitativa de radionuclídeos em um laboratório radiológico e nuclear móvel

Curzio¹,

Silva²,

Cardoso³

et al. 2022

BJDV

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This study establishes a quantitative analysis protocol of radionuclides in a radiological and nuclear mobile laboratory of the Brazilian Army's Institute of Chemical, Biological, Radiological and Nuclear Defense. The gamma spectrometry technique was used, by a HPGe detector, to identify certified gamma-emitting radioactive sources (Am-241, Cs-137 and Co-60) present in a standard solution diluted in a Marinelli flask of 4L. Energy, resolution and efficiency calibration curves were determined using the LabFit software, for this detector, in the considered geometry. The results show to be satisfactory the linear adjustment (Channel versus Energy) of set points have been obtained experimentally which was confirmed by the determination coefficient achieved (). Besides that, it could be also verified that the exponential function was the mathematical model that best represented the answer of the HPGe detector energy resolution and that the mathematical adjustment options provided by LabFit which allowed to correlate the counting efficiency with the energy of each photopeak, despite the lack of a greater amount of energy. To define specific activities, the measurement errors between theoretical and experimental values were less than 4%, evidencing the reasonable responsiveness of the measurement system.

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“…Dating of coastal sedimentary cores of paleoclimatic interest for ages between 100 and 200 years is usually obtained by applying the dating models based on 210 Pb in excess (Mabit et al, 2014), due to its suitable half-life, T 1/2 ¼ 22.23 (12) a (B� e et al, 2011). For this purpose, conventional gamma spectrometry can be used (Hassan et al, 1997;Manolopoulou et al, 2003;Chen and Huh, 1999), since it allows measuring the radionuclides of the natural disintegration chains simultaneously, in particular, 210 Pb, 226 Ra, 214 Pb and 235/238 U (Quintana et al, 2018). The resulting chronologies are validated with artificial radionuclides like 241 Am and 137 Cs (Alvarez-Iglesias et al, 2007;Leorri et al, 2014;Irabien et al, 2015;Alvarez-V� azquez et al, 2016;S� anchez-Cabeza and Ruiz--Fern� andez, 2012).…”

Section: Introductionmentioning

confidence: 99%

Precise 210Pb determination with high-efficiency gamma spectrometry for dating of marine sedimentary cores

Pedrosa-García

Fontela

Quintana

et al. 2020

Applied Radiation and Isotopes

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In order to establish the chronology of deep-sea sediments from high-resolution 210 Pb-dating, the determination of 210 Pb and 226 Ra activity concentrations needs to be improved. Gamma spectrometry allows determining simultaneously both radionuclides. However, spectrum background is still an issue to obtain high sensitivity. Four deep-sea sediment cores were dated using Mazinger, a gamma spectrometer with high-efficiency and very low-background, and the Constant Rate and Supply model was applied to obtain recent ages.

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A method for the complete analysis of NORM building materials by γ-ray spectrometry using HPGe detectors

Cited by 12 publications

References 9 publications

Radiation map for King Abdulaziz University campus and surrounding areas

Radiation map for King Abdulaziz University campus and surrounding areas

Quantitative radionuclide analysis protocol in a radiological and nuclear mobile laboratory / Protocolo de análise quantitativa de radionuclídeos em um laboratório radiológico e nuclear móvel

Precise 210Pb determination with high-efficiency gamma spectrometry for dating of marine sedimentary cores

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