Proceedings of the Mizoram Science Congress 2018 (MSC 2018) - Perspective and Trends in the Development of Science Education and Research

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Measurement of natural radioactivity using NaI (Tl) detector in soil samples collected from Aizawl, Mizoram, India

Authors
Vanramlawma, Hmingchungnunga, Remlalsiama, Laldingngheta, L.Z. Chhangte, Z. Pachuau, B. Zoliana, Rosangliana, B.K. Sahoo, Sapra
Corresponding Author
B. Zoliana
Available Online December 2018.
DOI
10.2991/msc-18.2018.36How to use a DOI?
Keywords
Radionuclide, activity concentration, NaI (Tl) detector, soil
Abstract

Measurement of natural radioactivity in soil samples collected from Aizawl district, Mizoram, was carried out using gamma spectrometer 5”X 4” NaI (Tl) detector. Soil samples were collected from 15 different sites located in various parts of Aizawl district. The activity concentrations were measured for three specific radionuclides, viz. 238U, 232Th and 40K. The activity concentration of 238U nuclides was found to be in the range of 20.13 Bq/kg to 60.4 Bq/kg, with an average value of 34.03 Bq/kg. For 232Th nuclides, the activity concentration ranges between 53.68 Bq/kg to 161.03 Bq/kg, with an average value of 90.71 Bq/kg. For 40K nuclides, it ranges from 279.58 Bq/kg to 964.62 Bq/kg, with an average value of 765.35 Bq/kg. To assess the uniformity of natural radioactivity in soil with respect to exposure, the radium equivalent activity was calculated and was found to be in the range of 135.62 Bq/kg to 350 Bq/kg, with an average value of 217.32 Bq/kg. Except for 238U nuclides, the overall average activity concentrations of 232Th and 40K nuclides in collected soil samples were found to be higher than world average, but lower than the critical value set by IAEA. The radium equivalent activity value in all the samples was found to be lower than the critical value of 370 Bq/kg. Hence, no radiological hazards were observed within the specified study area.

Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the Mizoram Science Congress 2018 (MSC 2018) - Perspective and Trends in the Development of Science Education and Research
Series
Advances in Engineering Research
Publication Date
December 2018
ISBN
978-94-6252-638-9
ISSN
2352-5401
DOI
10.2991/msc-18.2018.36How to use a DOI?
Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Vanramlawma
AU  - Hmingchungnunga
AU  - Remlalsiama
AU  - Laldingngheta
AU  - L.Z. Chhangte
AU  - Z. Pachuau
AU  - B. Zoliana
AU  - Rosangliana
AU  - B.K. Sahoo
AU  - Sapra
PY  - 2018/12
DA  - 2018/12
TI  - Measurement of natural radioactivity using NaI (Tl) detector in soil samples collected from Aizawl, Mizoram, India
BT  - Proceedings of the Mizoram Science Congress 2018 (MSC 2018) - Perspective and Trends in the Development of Science Education and Research
PB  - Atlantis Press
SP  - 207
EP  - 211
SN  - 2352-5401
UR  - https://doi.org/10.2991/msc-18.2018.36
DO  - 10.2991/msc-18.2018.36
ID  - 2018/12
ER  -