Natural Radioactivity and Associated Dose Rates in Soil Samples of Malnichera Tea Garden in Sylhet District of Bangladesh

Potassium-40 was determined in soil in an area with 40,000 m² situated in the western State of Pernambuco, Brazil. For radiometric measurements, the gamma spectrometry method with a high purity germanium (HPGe) detector was used. Sampling of 78 soil samples has been performed at intervals of 25 m. The specific activities of 40K were calculated based on the photopeak of 1.46 MeV. Values from 541 to 3,572 Bq kg-1 were obtained (mean of 1,827 Bq kg-1). These values allowed the determination of the elemental concentrations as well as the absorbed dose rates in air, 1 m above the ground. The values varied from 1.7 to 11.5% (mean of 6%) and from 23.4 to 154.3 nGy h-1 (mean of 79 nGy h-1), respectively.

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Mapping natural radioactivity of soil samples in different regions of Punjab, India

Applied Radiation and Isotopes ◽

10.1016/j.apradiso.2017.05.013 ◽

2017 ◽

Vol 127 ◽

pp. 73-81 ◽

Cited By ~ 4

Author(s):

Komal Saini ◽

B.S. Bajwa

Keyword(s):

Natural Radioactivity ◽

Soil Samples

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Natural radioactivity and radiological damage parameters for soil samples from Cekmekoy-İstanbul

Arabian Journal of Geosciences ◽

10.1007/s12517-021-09351-x ◽

2021 ◽

Vol 15 (1) ◽

Author(s):

İskender Akkurt ◽

Kadir Gunoglu ◽

Osman Gunay ◽

Mucize Sarıhan

Keyword(s):

Natural Radioactivity ◽

Soil Samples ◽

Radiological Damage

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Natural Radioactivity Levels and Radiological Hazards in Soil Samples Around Abu Karqas Sugar Factory

Journal of Environmental Science and Technology ◽

10.3923/jest.2018.28.38 ◽

2017 ◽

Vol 11 (1) ◽

pp. 28-38 ◽

Cited By ~ 5

Author(s):

Reda Elsaman ◽

Mohammed Ahmed Ali ◽

El-Montaser Mahmoud Se ◽

Atef El-Taher

Keyword(s):

Natural Radioactivity ◽

Soil Samples ◽

Sugar Factory ◽

Radiological Hazards ◽

Radioactivity Levels

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DETERMINATION OF RADON AND NATURAL RADIOACTIVITY CONCENTRATION IN SOME BUILDING MATERIALS USED IN IZMIR, TURKEY

Journal of Green Building ◽

10.3992/1943-4618.15.1.107 ◽

2020 ◽

Vol 15 (1) ◽

pp. 107-118

Author(s):

Daniel Hatungimana ◽

Caner Taşköprü ◽

Mutlu İçhedef ◽

Müslim Murat Saç ◽

Şemsi Yazıcı ◽

...

Keyword(s):

Natural Radioactivity ◽

Building Materials ◽

Gamma Spectroscopy ◽

Hazard Index ◽

Absorbed Dose ◽

Radiation Hazard ◽

Absorbed Dose Rate ◽

Dose Rates ◽

Activity Concentrations ◽

Materials Used

ABSTRACT The aim of this study is to determine the radon and natural radioactivity concentrations of some building materials and to assess the radiation hazard associated with those mortar materials when they are used in the construction of dwellings. Radon measurements were realized by using LR-115 Type 2 solid state nuclear track detectors. Radon activity concentrations of these materials were found to vary between 130.00 ± 11.40 and 1604.06 ± 40.5 Bq m−3. The natural radioactivity in selected mortar materials was analyzed by using scintillation gamma spectroscopy. The activity concentrations for 226Ra, 232Th and 40K for the studied mortar materials ranged from ND to 48.5 ± 7.0 Bq kg−1, ND to 41.0 ± 6.4 Bq kg−1 and ND to 720.4 ± 26.8 Bq kg−1, respectively. Radium equivalent activities, external and internal hazard indexes, gamma and alpha indexes and absorbed gamma dose rates were calculated to assess the radiation hazard of the natural radioactivity in studied samples. The calculated Raeq values of all samples were found to be lower than the limit of 370 Bq kg−1 set for building materials. The estimated hazard index values were found to be under the unity and the absorbed dose rate values were also below the worldwide average of 84 nGy h−1.

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