Natural radioactivity in the newly discovered high background radiation area on the eastern coast of Orissa, India

Natural radioactivity distribution and gammaradiation exposure of beach sands close to Kavalapluton, Greece

“…fractions are given in Table 1, are in well agreement with the natural radioactivity levels reported by the literature concerning data from regular background radiation areas [3,14,15,[17][18][19]. Moreover, data of samples obtained by heavy minerals enriched horizons, are comparable with the levels reported for high background radiation level areas in India, Brazil and Sithonia, Greece [11,13,16,18,36]. The activity concentrations of 238 U-series and 232 Thseries are positively correlated (R 2 = 0.8159) (Fig.…”

Natural radioactivity distribution and gamma radiation exposure of beach sands from Sithonia Peninsula

“…The textural group of each sample is given in Table 1 Table 2 (with the exception of samples 42, 46, 47 and 50 which display elevated levels of natural radioactivity), are in good agreement with the natural radioactivity levels reported by the literature concerning data from regular background radiation areas [9,14,15,17]. Moreover, data from samples 49Ep, 50Ep and 54Ep with high heavy mineral concentrations are comparable with the levels reported for high background radiation level areas in India and Brazil [8,11,13,16]. The activity concentrations of 238U-series and 232Th-series are positively correlated (R 2 = 0.7754) (Fig.…”

“…Various studies on natural radioactivity levels of sands were carried out worldwide, in particular in areas with high background radiation like India and Brazil or countries with extended sand land- scapes. Exposure dose rates were assessed indicating that these dose rates vary depending upon the concentration of the natural radionuclides present in sands and bed-rocks, which in turn depend upon the local geology of each region [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The coastline of Greece is one of the largest worldwide; however, despite the fact that most of Greek beaches are highly touristic, there are no data upon their natural radioactivity levels until now.…”

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

“…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).…”

“…Radionuclide activities obtained from work conducted worldwide have been tabulated in Table III. The data reported for Orissa (Mohanty et al, 2004) are for a high background radiation area. The obtained results in the current study are higher than the worldwide median activity concentrations (UNSCEAR, 2000) of 35, 30 and 400 Bq/kg for 238 U, 232 Th and 40 K respectively except 232 Th activity concentration of 28.73 Bq/kg in sample 1.…”