232Th and 40K

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Measurement of Radioactivity of 238U, 226Ra, 232Th and 40K in Soil of Different Geological Origins in Northern India

Measurement of Radioactivity of 238U, 226Ra, 232Th and 40K in Soil of Different Geological Origins in Northern India

Measurement of Radioactivity of 238U, 226Ra, 232Th and 40K in Soil of Different Geological Origins in Northern India Rohit Mehra1*, Manmohan Singh2 1.. Department of Physics, Dr BR Ambed[r]

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Determination of Natural Radioactivity and Radiological Hazards of 226Ra, 232Th, and 40K in the Grains Available at Penang Markets, Malaysia, Using High-purity Germanium Detector

Determination of Natural Radioactivity and Radiological Hazards of 226Ra, 232Th, and 40K in the Grains Available at Penang Markets, Malaysia, Using High-purity Germanium Detector

In the present work, the measurements of natural radioactivity levels were performed by gamma-ray spectrometry, using a HPGe detector connected to a multichannel analyzer.. A high pow[r]

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Impact of fertilizers on the uptake of 226Ra, 232Th, and 40K by pot-grown rice plants

Impact of fertilizers on the uptake of 226Ra, 232Th, and 40K by pot-grown rice plants

The uptake of 40 K with NPK treatment was slightly lower than with NPK+Mg; this finding may be caused by higher K percentage in second fertilizer (25% K) compared with other[r]

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Natural radioactivity in groundwater and 
		soils in Johor, Malaysia

Natural radioactivity in groundwater and soils in Johor, Malaysia

A study of natural radioactivity in samples of groundwater and soil were collected from nine districts in Johor and it was carried out on years 2008 until years 2010. The totals of seventy locations were selected as sampling point by referred to the reconnaissance maps and have been considered to the certain factor such as groundwater sources, soil types and the surrounding activities such as industrial or agricultures. At sampling point, the portable gamma-ray survey meter, Model 19 Micro R meter manufactured by Ludlum is used to measure the gamma dose rate at the surrounding areas. In the laboratory, the sample preparation process is made according to the recommended steps and the preparation process of groundwater and soil are different from each other. The technology of HPGe spectrometer is used to counting all samples within 3 hours detection time and the collections of data on radionuclides is in the form of gamma spectrum. Further analysis is depends on the measurement of the natural radioactivity of the elements 238U, 232Th and 40K in order to get the estimation results of the concentration radionuclides contained in groundwater and soil samples. At last, the graphs were plotted for the relationship between the concentration of radionuclides in the samples and gamma dose. At last, graphs were plotted for the relationship between the concentration of radionuclides in the samples and gamma dose.
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Evaluation of NORM and Dose Assessment in an Aluminium Industry in Nigeria

Evaluation of NORM and Dose Assessment in an Aluminium Industry in Nigeria

ABSTRACT The activity concentrations of natural radionuclides 226Ra, 232Th and 40K in bauxite ore, alumina, dross tailing, aluminium scraps and soil samples collected from an aluminium i[r]

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Natural radioactivity of surface and ground water samples in coastal communities of delta state, nigeria

Natural radioactivity of surface and ground water samples in coastal communities of delta state, nigeria

Conclusion The activity concentration of 226Ra, 232Th and 40K in surface water River and ground water borehole Samples collected from five selected communities in coastal area of Delta S[r]

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Measurement of Natural Radioactivity  and Radon Exhalation Rate in Coal  Ash Samples from a Thermal  Power Plant

Measurement of Natural Radioactivity and Radon Exhalation Rate in Coal Ash Samples from a Thermal Power Plant

In the present work, we assess the radiation hazards due to natural radioactivity in coal ash from radionuclides of three chains of radioactive decay 238U, 235U and 232Th and 40K, calcul[r]

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Gamma Radiation Measurements of Naturally Occurring Radioactive in Igneous Rocks and Its Radiological Complications

Gamma Radiation Measurements of Naturally Occurring Radioactive in Igneous Rocks and Its Radiological Complications

Results and Discussion Table 1 shows the values of activity concentration of 226Ra, 232Th and 40K and the corresponding radiological hazards were obtained from thirty rock samples collec[r]

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Measurement of Natural Radioactivity in Sand Samples Collected from Ad Dahna Desert in Saudi Arabia

Measurement of Natural Radioactivity in Sand Samples Collected from Ad Dahna Desert in Saudi Arabia

Activity concentrations Bq·kg-1 of 226Ra, 232Th and 40K in sand samples; and their corresponding radium equivalent activity Raeq, Internal radiation hazard index Hin, external radiation [r]

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Risk assessment due to ingestion of natural radionuclides and heavy  metals in drinking water

Risk assessment due to ingestion of natural radionuclides and heavy metals in drinking water

The concentrations of natural radioactivity of 226Ra, 232Th and 40K and some heavy elements (Zn, Mn, Fe, Mn, Cu, Ni, and Pb) were measured in drinking water samples collected from different mosques in Makkah city, Saudi Arabia. A high-resolution HPGe detector was used for the natural radionuclides measurement. The average activity concentrations were 0.32, 0.12 and 10.96 Bql 1 for 226 Ra, 232 Th, and 40 K, respectively. The cumulative annual effective dose due to ingestion of water samples was estimated to be 0.832 μSv y 1 for children and 0.369 μSv y 1 for adults, which are below the limit of 1.0 mSv y -1 for individual public exposure. These water samples were also analyzed for concentration of some heavy elements (Fe, Zn, Cu, Mn, Ni and Pb) using the inductively coupled plasma optical emission spectrophotometer (ICP-OES).The obtained results established that the heavy elements concentration in the drinking water samples did not exceed the recommended limits WHO and EPA guidelines for drinking water
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Natural radioactivity and heavy metals measurement in rice and flour consumed by the inhabitants in K S A

Natural radioactivity and heavy metals measurement in rice and flour consumed by the inhabitants in K S A

to carry out regular monitoring of foods like the which are considered the main daily foodstuff consumed not only by people in Saudi Arabia but in the objective of this work was to investigate the concentration of natural radioactivity (226Ra,232Th and 40K) and some heavy metals (Fe. Cd, Zn, Pb) in rice and flour samples. These concentrations can be useful as a guideline background to the risk exposure of radionuclide’s and heavy

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Protection of virtual machine deployment at a cloud service provider  through tpm

Protection of virtual machine deployment at a cloud service provider through tpm

An attempt has been made through this study to report the activity concentrations of natural radionucleides such as 226Ra, 232Th, and 40K in some locally manufactured and commercially av[r]

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A Comparison Study of Soil Samples from Sinai Province in Egypt by Using X Ray Diffraction and Gamma Ray Analysis

A Comparison Study of Soil Samples from Sinai Province in Egypt by Using X Ray Diffraction and Gamma Ray Analysis

The objectives of the present study are to determine some metal concentrations and measure the natural radioactivity levels of 226Ra, 232Th, and 40K in the soil samples taken from select[r]

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Contribution to the knowledge of the chemical composition, biological activities and activity concentration of 40K, 137Cs, 226Ra and 232Th of the lichen Evernia prunastri

Contribution to the knowledge of the chemical composition, biological activities and activity concentration of 40K, 137Cs, 226Ra and 232Th of the lichen Evernia prunastri

The intensity of the HPLC signals revealed that the extraction ability of the solvents decreased in the following order: acetone, ethyl acetate, diethyl ether, dichloromethan[r]

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Radioactivity Levels and Soil to Plant Transfer Factor of Natural Radionuclides from Protectorate Area in Aswan, Egypt

Radioactivity Levels and Soil to Plant Transfer Factor of Natural Radionuclides from Protectorate Area in Aswan, Egypt

Mean values and ranges of the activity concentrations Bq∙kg−1 dry weight for 238U, 226Ra, 232Th, 228Ra, 40K and 137Cs and transfer factor in soil and plant samples from Saluga and Ghazal[r]

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Study of Environmental Radiation on Sand and Soil Samples from Kuakata Sea Beach of Patuakhali

Study of Environmental Radiation on Sand and Soil Samples from Kuakata Sea Beach of Patuakhali

An attempt has made in this study to determine the concentration of 238 U, 232Th, 40K and 137Cs in beach sand and soil samples collected from Kuakata Seabeach of Patuakhali using HPGe ga[r]

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Evaluation of naturally occurring radionuclide in soil samples from pandogari mining sites in Niger State, Nigeria

Evaluation of naturally occurring radionuclide in soil samples from pandogari mining sites in Niger State, Nigeria

This study presents results of Activity Concentrations, Absorbed dose rate and the Annual Effective dose rates of naturally occurring radionuclides (40K, 232Th and 226Ra) absorbed in 7 soil samples collected from different areas within the Pandogari mining sites in Niger State, North Central Nigeria. A laboratory γ-ray spectrometry NaI (Tl) at the Centre for Energy Research and Training (CERT), Ahmadu Bello University Zaria, was used to carry out the analysis of the soil samples. The values of Activity Concentration for 40K ranged from 30.3266 ± 7.0295 to 259.2535 ± 6.3764 BqKg-1; for 226Ra it ranged from 17.6129 ± 3.8239 to 62.1089 ± 6.1066 BqKg-1 and for 232Th the ranged is from 21.5507 ±2.8506 to 60.4333 ± 2.0525 Bq.Kg-1. While the Absorbed Dose for 40K ranged from 1.2646 ± 0.2931 to 17.6333 ± 0.2020 ŋGy.h-1, for 226Ra the range is from 8.1372 ± 1.7666 to 28.6943 ± 2.8212 ŋGy.h-1 and for 232Th range from 13.0166 ± 1.7218 to 36.5017 ± 1.2397 ŋGy.h-1. The total average Absorbed Dose rate of the 7 soil samples collected is 52.1535 ŋGy.h-1 and the estimated Annual Effective Dose for the sampled areas range from 0.0318- 0.1016mSvy-1 (i.e. 32 – 102 μSv.y-1), with an average Annual Effective Dose of 0.0532mSv.y-1 (i.e. 53.2 μSv.y-1). These results show’s that the radiation exposure level reaching members of the public in the study areas is lower than the recommended limit value of 1 mSv.y-1 (UNSCEAR, 2000). Also the mean Radium Equivalents obtained ranged from 58.9317 BqKg-1 (PA5) to 181.0888 BqKg-1 (PA1). These results show that the recommended Radium Equivalent Concentration is ≤ 370 BqKg-1 which is the requirement for soil materials to be used for dwellings, this implies that the soil from this site is suitable use for residential buildings. The mean External Hazard Index (Hext) ranged from 0.0692 Bqkg-1 (PA5) to 0.4891 Bqkg-1 (PA1). While the maximum allowed value of (Hext= 1) corresponds to the upper limit of Raeq (370 BqKg-1) in order to limit the external gamma radiation dose from the soil materials to 1.5 mGy y-1. That is, this index should be equal to or less than unity (Hext≤ = 1). Furthermore, the mean Internal Hazard Index (Hext) ranged from 0.0453 Bqkg-1 (PA3) to 0.6569) Bqkg-1 (PA1) .Finally, the mean value of the Excess Alpha Radiation (Iα) ranged from 0.0881 Bq.Kg-1 (PA4) to 0.3105 Bq.Kg-1 (PA1). All these values for Iα are below the maximum permissible value of Iα=1 which corresponds to 200 Bq.Kg-1. It can therefore be said that no radiological hazard is envisaged to dwellers of the study areas and the miners working on those sites area.
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Basement data of the Terrestrial Radionuclide Level of Abuja Federal Capital Territory, (FCT), Nigeria

Basement data of the Terrestrial Radionuclide Level of Abuja Federal Capital Territory, (FCT), Nigeria

Radioactivity concentrations of 40K, 238U series, and 232Th series in Abuja soil samples, the absorbed dose rates from gamma radiation and the annual effective dose equivalent.. Absorbed[r]

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Estimation of Annual Effective Dose Due to Ingestion of Natural Radionuclides in Cattle in Tin Mining Area of Jos Plateau, Nigeria

Estimation of Annual Effective Dose Due to Ingestion of Natural Radionuclides in Cattle in Tin Mining Area of Jos Plateau, Nigeria

The objective of this work is to investigate the natural radioactivity levels 226Ra, 40K and 232Th in different organs of cattle grazed and slaughtered in the area for consumption and al[r]

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Precise Determination of Uranium Isotopes in Suez Canal Sediment

Precise Determination of Uranium Isotopes in Suez Canal Sediment

Results and Discussions The specific activity concentrations in the collected sediment samples for the radionuclides, 226Ra 238U, 232Th series and 40K are determined by gamma spectrometr[r]

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