Record Details

Natural Radioactivity, Radon Exhalation Rates and Radiation Doses in the Soil Samples Collected from the Vicinity of Kolaghat Thermal Power Plant, West Bengal, India

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Natural Radioactivity, Radon Exhalation Rates and Radiation Doses in the Soil Samples Collected from the Vicinity of Kolaghat Thermal Power Plant, West Bengal, India
 
Creator Sharma, Roshan Lal
Mahur, Ajay Kumar
Mehra, Rohit
Chand, Sansar
Ali, S Asad
Gupta, D Sen
Singh, Hargyan
 
Subject NaI(Tl)
Hazard Index
Annual effective dose
Radon activity
Gamma radiation representation level index
 
Description 653-658
Natural radioactivity has been determined by means of a highly efficient thallium-doped sodium iodide detector in soil
sample from surface of from vicinage of “Kolaghat Thermal Power Plant” The activity concentration (specific activity) is found
to vary from 23.70 ± 3.41 to 33.90 ± 4.33 Bqkg-1 for 226Ra, from 6.67 ± 2.01 to 21.60 ± 2.11 Bqkg-1 for 232Th and that for 40K
from 461.01 ± 66.16 to 610.25 ± 80.87 Bqkg-1 with expected value of 29.26 ± 3.50, 4.86 ± 2.03 and 517.53 ± 71.61 Bqkg-1 of
Radium-226, Thorium-232 and Potassium-40 correspondingly. The radon exhalation rates were also computed from all samples
using the "Sealed Can Technique”. The activity due to radon fluctuates from 47.9 ± 6.2 to 157.6 ± 11.3 Bqm-3 having an
arithmetic mean of 89.3 ± 7.9 Bqm-3. The surface exhalation rate and mass exhalation rates were estimated to fluctuate
from17.3 ± 2.2 to 56.8 ± 4.1 mBqm-2h-1 with an expectation of 32.1 ± 3.0 mBqm-2h-1 and from 0.6 ± 0.1 to 2.1 ± 0.2 mBqkg-1h-1
averaged out to 1.2 ± 0.1 mBqkg-1h-1respectively. Radiation doses were also calculated in these samples. Indoor and outdoor
annual effective doses, Absorbed dose rates, External Hazard index and Indoor inhalation exposure, also known as radon
effective dose, was computed and varied from 0.19 to 0.25 mSv y-1, 39.30 to 51.61 nGyh-1, 0.048 to 0.063 mSvy-1,
0.21 to 0.28 and 0.29 to 0.36 and 2.04 to 6.70 μSvy-1 respectively. The values which were obtained in this study are found to
be well below the allowed permissible limits, so the soil may be used as building construction material.
 
Date 2023-09-21T05:00:16Z
2023-09-21T05:00:16Z
2023-09
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/62547
https://doi.org/10.56042/ijpap.v61i8.2795
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.61(08) [August 2023]