Natural activities of , and in some Indian building materials

Kumar, Ajay; Kumar, Mukesh; Singh, Baldev; Singh, Surinder

doi:10.1016/s1350-4487(03)00173-2

Cited by 112 publications

(36 citation statements)

References 12 publications

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“…The natural radioactivity of building materials in many countries has been reported [1][2][3][4][5][6][7][8][9][10][11][12] . Natural radioactivity in some Indian building materials has also been reported by other authors [6,[11][12][13][14][15] . A knowledge of radioactivity present in construction materials helps to (a) assess the possible radiological hazards to human health and (b) develop the standards and guidelines for use and management of these materials.…”

Section: Introductionsupporting

confidence: 63%

FFA study on Activity concentration of Natural Radionuclides of Building Materials in Pachal, Tiruvannamalai Dist, Tamilnadu, India

Ravisankar¹

2015

JEHS

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This paper presents the finding of a study undertaken to determine the natural radioactivity present in building materials in Pachal of Tiruvannamalai District, Tamilnadu. During this study, the samples of commonly used raw materials for buildings were collected and analyzed for primordial radio nuclides by gamma ray spectrometry using NaI (TI) detector. The specific activities of 226 Ra, 232Th and 40 K were measured in the samples. The radium-equivalent activity (Ra eq ) of the samples was calculated and compared with similar data obtained in other countries that are reported in the literature. The comparison reveals that Ra eq values obtained in our study area fall far below the criterion limit specified in building materials. The potential radiological hazard of the different samples was estimated using different approaches. These values were compared with the published data and were found to be within the acceptable limits. The results show that these materials are quite safe to be used as building materials.

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Section: Introductionsupporting

confidence: 63%

FFA study on Activity concentration of Natural Radionuclides of Building Materials in Pachal, Tiruvannamalai Dist, Tamilnadu, India

Ravisankar¹

2015

JEHS

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“…The samples were packed and sealed in radonimpermeable airtight cylindrical plastic containers (7.5 cm height and 4 cm diameter). All the samples were then stored for 4-5 weeks before counting so as to ensure 226 Ra and its short-lived progeny reached secular equilibrium (Amrani and Tahtat, 2001;Khan and Khan, 2001;Kumar et al, 1999Kumar et al, , 2003.…”

Section: Sample Collection and Preparationmentioning

confidence: 99%

Radiological significance of marble used for construction of dwellings in Bangladesh

2012

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The natural γ-radiation in samples of a variety of marbles imported into14 Bq.kg -1 ). The measured activity concentrations for these natural radionuclides were compared with the reported data of other countries and with the world average activity of soil. The radium equivalent activity (Ra eq ), the hazard indices, the gamma activity concentration index, the indoor absorbed dose rate and the corresponding annual effective dose were estimated for the potential radiological hazard of the marble. The Ra eq values of all marble samples are lower than the limit of 370 Bq.kg -1 , equivalent to a dose of 1.5 mSv.y

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“…The dried samples were homogenized, weighed and packed into identical 7.2 cm diameter and 6.0 cm height radon impermeable marinelli beakers which holds between 300-350g of sample. The beakers were then subjected to a triple stage sealing process to ensure the containment of radon-222 (Jamok, 2014), and stored at room temperature for a period of 5 weeks to allow for radioactive equilibrium between the parents and their daughter nuclides (Amin et al, 2013;Ghose et al, 2012;Ibeanu, 2002;Kumar et al, 2003).…”

Section: Methodsmentioning

confidence: 99%

Natural radioactivity and environmental risk assessment of Sokoto phosphate rock, Northwest Nigeria

Kolo¹

2014

Afr. J. Environ. Sci. Technol.

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, and 315.3±6.7 Bqkg -1 respectively. Contributions from radium contents to the overall radionuclide activity concentrations were quite significant. The calculated mean value of the absorbed dose rate was found to be 3.6 times the maximum value for the world background level, which shows the severity of radiation risk the public is exposed to in the study areas. The computed values for radiation hazard indices were above the world's proposed safety limits by UNSCEAR, which place the study areas among high background radiation zones. Some restrictive measures and precautionary actions are therefore obligatory for the local farmers and the general public from the view point of radiation protection.

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Natural activities of , and in some Indian building materials

Cited by 112 publications

References 12 publications

FFA study on Activity concentration of Natural Radionuclides of Building Materials in Pachal, Tiruvannamalai Dist, Tamilnadu, India

FFA study on Activity concentration of Natural Radionuclides of Building Materials in Pachal, Tiruvannamalai Dist, Tamilnadu, India

Radiological significance of marble used for construction of dwellings in Bangladesh

Natural radioactivity and environmental risk assessment of Sokoto phosphate rock, Northwest Nigeria

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