Measurement of natural radioactivity in Jordanian building materials and their contribution to the public indoor gamma dose rate

Sharaf, J.M.; Hamideen, Mefleh S.

doi:10.1016/j.apradiso.2013.06.016

Cited by 59 publications

(26 citation statements)

References 16 publications

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“…The samples were dried at 100 °C for 2 hours to ensure that any moisture was removed from the samples and then to obtain uniform particle sizes, a 650μm mesh was used to sieve the samples after that samples were weighted (1kg) and transferred to a Marinelli beaker (1 L) [10]. The samples were stored and kept sealed for about one month before measurements in order to achieve the secular equilibrium for 238 U and 232 Th with their respective progenies [11].…”

Section: Materials and Methods Collection And Preparationmentioning

confidence: 99%

Evaluation of Natural Radioactivity in Granite and Marble used as Flooring Materials in Baghdad Province/ Iraq

Zeyad

Al-Fatlawy

2018

ijs

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Twenty four samples of various granites and marble used common as flooring materials were collected from many factories and market in Baghdad Province, Iraq. Natural radioactivity of 226 Ra, 232 Th and 40 K in the samples was measured by using high purity germanium detectors with an efficiency of 40%. The Specific activity concentration in granite samples ranged from 9.20 to 79.64 Bq/kg, 10.50 to 229.40 Bq/kg and 185.30 to 1391.20 Bq/kg for 226 Ra, 232 Th and 40 K, respectively. The estimated of radiological parameters: radium equivalent activity (R eq) , activity concentration Index (I) and hazard indices (internal (H in ) and External (H ex )) that associated with the radiation hazard in the samples. The results of activity specific concentrations and radiological parameters of 226 Ra, 232 Th and 40 K were compared with the reported data of the worldwide limit of building materials.

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Section: Materials and Methods Collection And Preparationmentioning

confidence: 99%

Evaluation of Natural Radioactivity in Granite and Marble used as Flooring Materials in Baghdad Province/ Iraq

Zeyad

Al-Fatlawy

2018

ijs

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“…In addition to the external hazard, radon and its shortlived products are also hazardous to the respiratory organs. The internal exposure to radon and its daughter products is quantified by the internal hazard index ( in ) which is defined as [28] in = ( Ra /185) + ( Th /259) + ( K /4810) (3) where Ra , Th and K are the activity concentrations of 226 Ra, 232 Th and 40 K in Bq kg −1 , respectively. For the safe use of a material in the construction of dwellings, in should be less than unity.…”

Section: External and Internal Hazard Indexesmentioning

confidence: 99%

“…fly ash of coal power plant and phosphogypsum of phosphoric acid manufacture, etc.) [1,2], often contain significant quantities of natural radionuclides 226 Ra, 232 Th and 40 K [3].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of natural radioactivity in major building materials of Xiangyang, China

Feng¹,

Li²

2014

Radiochimica Acta

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The activity concentrations of 40 K, 226 Ra and 232 Th in the commonly used building materials collected from Xiangyang were measured using NaI (Tl) gamma spectrometer. The radioactivity values of 40 K, 226 Ra and 232 Th in the studied samples ranged from 130.5 to 1006.3, 8.4 to 164.0, and 8.7 to 145.6 Bq kg −1 , respectively. The concentrations of these radionuclides have been compared with the typical published world values. Radium equivalent activity, external and internal hazard indexes, external and internal exposure indexes, indoor air absorbed dose rate and annual effective dose rate have been calculated to assess the potential radiological hazard associated with natural radionuclides in the studied materials.The calculated values of all the assessed indices in the analyzed building materials except for fly ash are below the internationally accepted limits indicating that these building materials can be safely used in dwellings construction and do not lead to any significant radiation exposure to occupants. Nevertheless, the annual effective dose rate values of all fly ash samples, external and internal hazard indexes values in most fly ash samples exceed the recommended values. It is, therefore, desirable to regularly monitor the natural radioactivity level of the building materials products made from fly ash.

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“…For a comparison purpose, Fig. 7 shows mean Raeq obtained in samples from Pakistan, PK, [33]; Egypt, EG, [34]; Jordan, JO, [35]; and with two other…”

Section: Radiological Risk Assessmentmentioning

confidence: 99%

Radiological hazard indices and elemental composition of Brazilian and Swiss ornamental rocks

Hajj¹,

Silva²,

Gandolla³

et al. 2017

Braz. J. Rad. Sci.

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Measurement of natural radioactivity in Jordanian building materials and their contribution to the public indoor gamma dose rate

Cited by 59 publications

References 16 publications

Evaluation of Natural Radioactivity in Granite and Marble used as Flooring Materials in Baghdad Province/ Iraq

Evaluation of Natural Radioactivity in Granite and Marble used as Flooring Materials in Baghdad Province/ Iraq

Assessment of natural radioactivity in major building materials of Xiangyang, China

Radiological hazard indices and elemental composition of Brazilian and Swiss ornamental rocks

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