Indian Journal of Pure and Applied Physics

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Assessment of Radiological Doses from the Presence of 226Ra, 232Th and 40K in the Soil Samples of Nawanshahar and Rupnagar Districts of Punjab (India)


Affiliations
1 Department of Physics, NetajiSubhas University of Technology, Dwarka, New Delhi 110 078, India
2 Department of Physics, SSBSR, Sharda University, Greater Noida 201 310, India
3 Department of Radiology, SSAHS, Sharda University, Greater Noida 201 310, India
4 Department of Physics, Dr. BR Ambedkar National Institute of Technology, Punjab 144 011, India
5 Chitkara University School of Engineering and Technology, Chitkara University, Solan, Himachal Pradesh 174 103, India
 

Apart from Uranium (238U), other natural radionuclides such as radium (226Ra), thorium (232Th) and potassium (40K) are considered to be carcinogenic due to their major contribution of radiological doses to human beings. This study revealed the measurement of primordial radionuclides (226Ra, 232Th, 40K) from the Nawanshahar and Rupnagar districts of Punjab by using a gamma beta spectrometer. The activity concentration of 226Ra, 232Th and 40K in the studied region was ranged from 18 ± 5 Bq kg-1 to 37 ± 6 Bq kg-1, 23 ± 5 Bq kg-1 to 54 ± 8 Bq kg-1 and 273 ± 23 Bq kg-1 to 472 ± 37 Bq kg-1 respectively. The distinct radiation hazards parameters as radium equivalent (RaEq), absorbed dose rate (AD) and annual effective doses (AEDE) were estimated for radiological risk assessment. The absorbed dose levels of 226Ra, 232Th and 40K in the studied area ranged from 8.74 nGyh-1-15.33 nGyh-1, 14.6 nGyh-1-33.7 nGyh-1, and 11.31 nGyh-1 -18.93 nGyh-1, respectively. The annual effective doses in the studied region were 0.32 mSv y-1 (indoor) and 0.8 mSv y-1 (outdoor), respectively. The estimated hazard indices in the studied region were below unity showing that exposure to natural radionuclides in the soil is not a problem in the areas from a radiation hazards point of view.

Keywords

Radium, Thorium, Potassium, Radiological Doses, Risk Assessment, Toxicity.
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  • Assessment of Radiological Doses from the Presence of 226Ra, 232Th and 40K in the Soil Samples of Nawanshahar and Rupnagar Districts of Punjab (India)

Abstract Views: 60  |  PDF Views: 56

Authors

P Bangotra
Department of Physics, NetajiSubhas University of Technology, Dwarka, New Delhi 110 078, India
R Singh
Department of Physics, SSBSR, Sharda University, Greater Noida 201 310, India
A Ashish
Department of Radiology, SSAHS, Sharda University, Greater Noida 201 310, India
R Mehra
Department of Physics, Dr. BR Ambedkar National Institute of Technology, Punjab 144 011, India
M Prasad
Chitkara University School of Engineering and Technology, Chitkara University, Solan, Himachal Pradesh 174 103, India
N L Singh
Department of Physics, NetajiSubhas University of Technology, Dwarka, New Delhi 110 078, India

Abstract


Apart from Uranium (238U), other natural radionuclides such as radium (226Ra), thorium (232Th) and potassium (40K) are considered to be carcinogenic due to their major contribution of radiological doses to human beings. This study revealed the measurement of primordial radionuclides (226Ra, 232Th, 40K) from the Nawanshahar and Rupnagar districts of Punjab by using a gamma beta spectrometer. The activity concentration of 226Ra, 232Th and 40K in the studied region was ranged from 18 ± 5 Bq kg-1 to 37 ± 6 Bq kg-1, 23 ± 5 Bq kg-1 to 54 ± 8 Bq kg-1 and 273 ± 23 Bq kg-1 to 472 ± 37 Bq kg-1 respectively. The distinct radiation hazards parameters as radium equivalent (RaEq), absorbed dose rate (AD) and annual effective doses (AEDE) were estimated for radiological risk assessment. The absorbed dose levels of 226Ra, 232Th and 40K in the studied area ranged from 8.74 nGyh-1-15.33 nGyh-1, 14.6 nGyh-1-33.7 nGyh-1, and 11.31 nGyh-1 -18.93 nGyh-1, respectively. The annual effective doses in the studied region were 0.32 mSv y-1 (indoor) and 0.8 mSv y-1 (outdoor), respectively. The estimated hazard indices in the studied region were below unity showing that exposure to natural radionuclides in the soil is not a problem in the areas from a radiation hazards point of view.

Keywords


Radium, Thorium, Potassium, Radiological Doses, Risk Assessment, Toxicity.

References