Natural Radioactivity in Soil and Radiation Levels of Rajasthan

Rao, Megha; Bhati, Sharda; Seshu, P. Rama; Reddy, A.R.

doi:10.1093/oxfordjournals.rpd.a031531

Cited by 54 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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: 62%

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

Ravisankar¹

2015

JEHS

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionsupporting

confidence: 62%

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

Ravisankar¹

2015

JEHS

View full text Add to dashboard Cite

show abstract

“…Th ( United States 8.9 ± 4.2 3.0 ± 2.5 - Myrick et al (1983) Alps-Apennines, Italy 0.3 -16.7 0.3 -5.6 0.14 -5.14 Chiozzi et al (2002) Amman, Jordan 7.1 4.6 1.7 Ahmad et al (1997) Karak, Jordan 6.7 18.5 1.4 Ahmad et al (1997) Instanbul, Turkey 9.1 1.7 1.1 Karahan and Bayulken (2000) Costal area, Aegean sea, Greece Canary islands 13.3 3.6 2.2 Fernandez et al (1992) Spain 1.7 -50.3 1.1 -13.4 0.2 -5.2 Baeza et al (1992) Rajasthan, India 10.6 -26.1 2.4 -6.3 0.2 -0.5 Nageswara et al (1996) Cyprus <1-9.8 <1 -3.2 <1 -1. Table 2, grouped according to their geological composition illustrated in the legend of Fig.…”

Section: Average Elemental Concentrationmentioning

confidence: 99%

Determination of thorium, uranium and potassium elemental concentrations in surface soils in Cyprus

Tzortzis

Tsertos

2004

Journal of Environmental Radioactivity

159

View full text Add to dashboard Cite

A comprehensive study was conducted to determine thorium, uranium and potassium elemental concentrations in surface soils throughout the accessible area of Cyprus using high-resolution γ−ray spectrometry. A total of 115 soil samples was collected from all over the bedrock surface of the island based on the different lithological units of the study area. The soil samples were air-dried, sieved through a fine mesh, sealed in 1000-mL plastic Marinelli beakers, and measured in the laboratory in terms of their gamma radioactivity for a counting time of 18 hours each. From the measured γ−ray spectra, elemental concentrations were determined for thorium (range from 2.5×10 −3 to 9.8 µg g −1 ), uranium (from 8.1×10 −4 to 3.2 µg g −1 ) and potassium (from 1.3×10 −4 to 1.9 %). The arithmetic mean values (A.M. ± S.D.) calculated from all samples are:(1.2 ± 1.7) µg g −1 , (0.6 ± 0.7) µg g −1 , and (0.4 ± 0.3) %, for thorium, uranium and potassium, respectively, which are by a factor of three to six lower than the world average values of 7.4 µg g −1 (Th), 2.8 µg g −1 (U) and 1.3 % (K) derived from all data available worldwide. The best-fitting relation between the concentrations of Th and K * Corresponding author. E-mail address: tsertos@ucy.ac.cy, Fax: +357-22892821. 2versus U, and also of K versus Th, is essentially of linear type with a correlation coefficient of 0.93, 0.84, and 0.90, respectively. The Th/U, K/U, and K/Th ratios (slopes) extracted are equal to 2.0, 2.8×10 3 , and 1.4×10 3 , respectively.

show abstract

“…Values from the current study have been compared to work conducted worldwide in Table VI. The values reported in Orissa, India (Mohanty et al, 2004) Nageswara et al (1996) Istanbul, Turkey 65 (mean) Karahan et al (2000) Taiwan 62 (mean) Yu-Ming et al (1987) Canary islands 67 (mean) Fernandez et al (1992) Greece 69 (mean) Probonas et al (1993) Kerala, India 200-4000 Sunta et al (1981) Ooty, India 31.6-221 Selvasekarapandian et al (1999) Gudalore, India 74.3 ± 27.8 Selvasekarapandian et al (2000) Namibia 90-180 Steinhausler et al (1992) Russaifa, Jordan 97.5 Al-Jundi (2002) Red sea coast, Egypt 26.5-50.9 El-Arabi (2005) Orissa, India 1925 ± 718 (mean) Mohanty et al (2004) World range 28-120 UNSCEAR (1993) Jaduguda, India 100-121 Present study dose rate is due to the high variability in radionuclide concentrations in the samples. It is considered that 98% of the external gamma dose rate from 238 U series is due to 226 Ra and its daughters (Shanbhag et al, 2005).…”

Section: Air Absorbed Gamma Dose Rate (D)mentioning

confidence: 98%

Occurrences of NORMS and¹³⁷Cs in soils of the Singhbhum region of Eastern India and associated Radiation Hazard

2009

View full text Add to dashboard Cite

show abstract

Natural Radioactivity in Soil and Radiation Levels of Rajasthan

Cited by 54 publications

References 0 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

Determination of thorium, uranium and potassium elemental concentrations in surface soils in Cyprus

Occurrences of NORMS and¹³⁷Cs in soils of the Singhbhum region of Eastern India and associated Radiation Hazard

Contact Info

Product

Resources

About

Natural Radioactivity in Soil and Radiation Levels of Rajasthan

Cited by 54 publications

References 0 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

Determination of thorium, uranium and potassium elemental concentrations in surface soils in Cyprus

Occurrences of NORMS and137Cs in soils of the Singhbhum region of Eastern India and associated Radiation Hazard

Contact Info

Product

Resources

About

Occurrences of NORMS and¹³⁷Cs in soils of the Singhbhum region of Eastern India and associated Radiation Hazard