Natural radioactivity and radon exhalation rate of Sardinian dimension stones

Dentoni, Valentina; Pelo, Stefania Da; Aghdam, Mirsina Mousavi; Randaccio, P.; Loi, Alfredo; Careddu, Nicola; Bernardini, Alessandra

doi:10.1016/j.conbuildmat.2020.118377

Cited by 39 publications

(18 citation statements)

References 27 publications

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“…However, the average 232 Th activity exceeded mean values of 18 Bq kg −1 reported for Ĉistá type granites (Krešl and Vaňková, 1978 (Anjos et al 2011;Chen and Lin 1996). Typical commercial granites from Greece and Sardinia gave respective 232 Th activity values of 77 and 66 Bq kg −1 (Papadopoulos et al 2012;Dentoni et al 2020). Commercial granites from Japan gave lower 232 Th activity values of 40 Bq kg −1 (Hassan et al 2010).…”

Section: Granitesmentioning

confidence: 89%

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Natural radioactivity of rocks from the historic Jeroným Mine in the Czech Republic

et al. 2021

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This study reports the natural radioactivity of characteristic rocks found in the historic Jeroným Mine of the Czech Republic as measured under the laboratory conditions. The rocks analyzed included granites and schists weathered to varying degrees and collected from different levels of the underground workings of the Jeroným Mine. The mine itself has been subject to metal extraction (mainly tin and tungsten) since the sixteenth century and has recently been developed as a cultural and scientific attraction open to the public. Activity concentrations of 40K, 232Th and 238U were measured from nine rock samples using gamma-ray spectrometry. The activity concentrations of 40K varied from 595 Bq kg−1 to 1244 Bq kg−1, while 232Th varied from 25 Bq kg−1 to 55 Bq kg−1. The activities associated with 238U ranged from 46 Bq kg−1 to 386 Bq kg−1. The measured activities were used to estimate two radiation hazard indices typically applied to building materials, the activity concentration index I and the external hazard index Hex. Mean respective values of 1.02 and 0.77 for I and Hex indicate that the rocks found in the Jeroným Mine meet radiological safety standards for building materials and do not pose a risk to potential tourists and staff.

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Section: Granitesmentioning

confidence: 89%

“…Four other granite samples exhibited relatively high 238 U activities of 215 Bq kg −1 for CH41, 153 Bq kg −1 for K9, 150 Bq kg −1 for K2 and 140 Bq kg −1 Fig. 9 (Dentoni et al 2020). Granites from Egypt and India gave the highest mean values of 118 and 119 Bq kg −1 (Harb et al 2012;Chen and Lin 1996).…”

Section: Granitementioning

confidence: 95%

Natural radioactivity of rocks from the historic Jeroným Mine in the Czech Republic

et al. 2021

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“…2 and 10 show that the lowest 238 U activities observed come from samples collected from the northern part of the Jeroným Mine. (Dentoni et al, 2020). Granites from Egypt and India gave the highest mean values of 118 and 119 Bq kg -1 (Harb et al, 2012;Chen and Lin, 1996).…”

Section: Granitementioning

confidence: 94%

“…Brazilian, Indian and Swedish commercial granites gave respective average 232 Th activity values of 106, 172 and 110 Bq kg -1 (Anjos et al, 2011;Chen and Lin, 1996) . Typical commercial granites from Greece and Sardinia gave respective 232 Th activity values of 77 and 66 Bq kg -1 (Papadopoulos et al, 2012;Dentoni et al, 2020). Commercial granites from Japan gave lower 232 Th activity values of 40 Bq kg -1 (Hassan et al, 2010).…”

Section: Granitesmentioning

confidence: 99%

Natural Radioactivity of Rocks from the Historic Jeroným Mine in the Czech Republic

Malczewski

Dziurowicz

Kaláb

et al. 2021

Preprint

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This study reports the natural radioactivity of characteristic rocks found in the historic Jeroným Mine of the Czech Republic as measured under the laboratory conditions. The rocks analyzed included granites and schists weathered to varying degrees and collected from different levels of the underground workings of the Jeroným Mine. The mine itself has been subject to metal extraction (mainly tin and tungsten) since the 16th century and has recently been developed as a cultural and scientific attraction open to the public. Activity concentrations of 40K, 232Th and 238U were measured from nine rock samples using gamma-ray spectrometry. The activity concentrations of 40K varied from 595 Bq kg− 1 to 1244 Bq kg− 1, while 232Th varied from 25 Bq kg− 1 to 55 Bq kg− 1. The activities associated with 238U ranged from 46 Bq kg− 1 to 386 Bq kg− 1. The measured activities were used to estimate two radiation hazard indices typically applied to building materials, the activity concentration index I and the external hazard index Hex. Mean respective values of 1.02 and 0.77 for I and Hex indicate that the rocks found in the Jeroným Mine meet radiological safety standards for building materials and do not pose a risk to potential tourists and staff.

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“…Many approaches require destructive tests in which the sample is reduced to powder, dried, poured into a container with a specific geometry and sealed. After a period of about 1 month required for establishing the radioactive equilibrium between

Ra and

Rn (see Figure 2 of [ 7 ]), the sample is positioned inside a thick shielding structure used to reduce the external background and measured with High Purity Germanium (HPGe) [ 8 , 9 , 10 , 11 , 12 , 13 ] or with a higher efficiency NaI spectrometer [ 13 , 14 , 15 ]. The analysis to extract the radionuclide abundances and the ACIs are done offline and manually.…”

Section: Comparison With the State-of-the-artmentioning

confidence: 99%

An Easily Integrable Industrial System for Gamma Spectroscopic Analysis and Traceability of Stones and Building Materials

Marini

Panicacci

Donati

et al. 2021

Sensors

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In the building material and stones market, lots of restrictions are coming in different world zones. In Europe, a recent regulatory set up the maximum level of radiological emissions for materials intended for use in public and private building structures. For this reason, companies need to have a very efficient radiological measurements system in their production chain, in order to respect all the rules and to be competitive in the world market. This article describes CORSAIR, a Cloud-Oriented Measurement System for Radiological Investigation and Traceability of Stones. Our cyber-physical system consists of sensing nodes network connected to a data collection gateway through LoRaWAN protocol, and interfaces with a centralized cloud application. CORSAIR introduces a fast, repeatable, real-time and non-destructive method to measure radiological emissions and other parameters of each single building material item, uniquely identified by an applied RFID tag. The validity of this system is confirmed by in-situ measurement campaign compared with high-precision laboratory analysis. The results demonstrate the accuracy of the CORSAIR sensor and the possibility to easily integrate it in the company production chain without any change.

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Natural radioactivity and radon exhalation rate of Sardinian dimension stones

Cited by 39 publications

References 27 publications

Natural radioactivity of rocks from the historic Jeroným Mine in the Czech Republic

Natural radioactivity of rocks from the historic Jeroným Mine in the Czech Republic

Natural Radioactivity of Rocks from the Historic Jeroným Mine in the Czech Republic

An Easily Integrable Industrial System for Gamma Spectroscopic Analysis and Traceability of Stones and Building Materials

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