Study of the variation and the effect of geo-chemical composition on the external background radiation level

Marbaniang, Deswyn G.; Poddar, Raj K.; Nongkynrih, P.

doi:10.1007/s10661-008-0310-x

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Natural radiation is the largest contributor to the collective dose of the world population. Natural background radiation represents a substantial fraction of the total radiation exposure of most individuals (Okeyode and Farai 2007, Porstendorfer 1994, Ramola and Negi 2004, Marbaniang et al 2007.…”

Section: Introductionmentioning

confidence: 99%

²²⁶Ra,²³²Th and⁴⁰K contents in soil samples from Garhwal Himalaya, India, and its radiological implications

et al. 2008

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The exposure of human beings to ionising radiation from natural sources is a continuing and inescapable feature of life on earth. Natural radionuclides are widely distributed in various geological formations and ecosystems such as rocks, soil groundwater and foodstuffs. In the present study, the distribution of (226)Ra, (232)Th and (40)K was measured in soil samples collected from different lithological units of the Thauldhar and Budhakedar regions of Garhwal Himalaya, India. The collected soil samples were analysed using gamma ray spectrometry. The activity concentrations of the naturally occurring radionuclides (226)Ra, (232)Th and (40)K in these soil samples were found to vary from below detection level (BDL) to 131 +/- 18 Bq kg(-1), 9 +/- 6 to 384 +/- 53 Bq kg(-1) and 471 +/- 96 to 1406 +/- 175 Bq kg(-1), respectively. The distribution of radionuclides depends upon the rock formation and chemical properties within the earth. The activity concentrations vary widely depending on the sample origin. The external absorbed gamma dose rates due to (226)Ra, (232)Th and (40)K were found to vary from 49 to 306 nGy h(-1). The average radium equivalent activity from these soil samples was 300 Bq kg(-1).

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Section: Introductionmentioning

confidence: 99%

²²⁶Ra,²³²Th and⁴⁰K contents in soil samples from Garhwal Himalaya, India, and its radiological implications

et al. 2008

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“…At present, quantitative investigations on the radioactive contamination of the mining area caused by mining of uranium deposits are still relatively less. Related studies have mainly focused on environmental radioactivity levels and radiation dose [7][8][9][10][11] and there have been only a small number of studies exploring the radionuclide content in rice and whether it is affected by the radionuclide 12 . Rice paddy soil is the most important factor that influences the accumulation of radionuclide in rice.…”

Section: Assessment On Radioactive Uranium Contamination Of Paddy Soi...mentioning

confidence: 99%

Assessment on Radioactive Uranium Contamination of Paddy Soil in Uranium Mine at Southeast China by ICP-MS

Liu¹,

ChangShuai²,

Zhang³

et al. 2015

Asian J. Chem.

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Plasma mass spectrometry was applied to measure the level of radioactive uranium in 151 paddy soil samples collected from a uranium mine in southeast China and the uranium contamination was assessed. The results showed that the average uranium content in the paddy soil in the active mining region was 7.88 and 11.44 times the soil background value of the Jiangxi Province and of China nationwide, respectively and was 14.50 times that of the control zone; the average uranium content in the paddy soil in unworked mine region was 1.93 and 1.33 times the soil background value of the Jiangxi Province and of China nationwide, respectively and was 2.44 times that of control zone. The coefficient of variation of uranium content in the active mining region was as high as 201.18 %, suggesting strong impact of anthropogenic disturbance factors. The uranium level in the paddy soil in the active mining region was 2.63 times that in the unworked mine region, suggesting that mining activity was an important factor contributing to aggravated uranium contamination in the mine area. The levels of uranium contamination of paddy soil samples collected from different regions were active mining region > unworked mine region > control zone; there was severe or moderate uranium contamination in the active mining region, mild or no uranium contamination in the unworked mine region and no uranium contamination in the control zone.

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Study of the variation and the effect of geo-chemical composition on the external background radiation level

Cited by 2 publications

References 7 publications

²²⁶Ra,²³²Th and⁴⁰K contents in soil samples from Garhwal Himalaya, India, and its radiological implications

²²⁶Ra,²³²Th and⁴⁰K contents in soil samples from Garhwal Himalaya, India, and its radiological implications

Assessment on Radioactive Uranium Contamination of Paddy Soil in Uranium Mine at Southeast China by ICP-MS

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Study of the variation and the effect of geo-chemical composition on the external background radiation level

Cited by 2 publications

References 7 publications

226Ra,232Th and40K contents in soil samples from Garhwal Himalaya, India, and its radiological implications

226Ra,232Th and40K contents in soil samples from Garhwal Himalaya, India, and its radiological implications

Assessment on Radioactive Uranium Contamination of Paddy Soil in Uranium Mine at Southeast China by ICP-MS

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²²⁶Ra,²³²Th and⁴⁰K contents in soil samples from Garhwal Himalaya, India, and its radiological implications

²²⁶Ra,²³²Th and⁴⁰K contents in soil samples from Garhwal Himalaya, India, and its radiological implications