Abstract
Background
Since Pudukkottai district is naturally endowed with variety of building material resources such as stones, bricks, sand etc. These building materials are also exported to other district. So analysis of natural radioactivity in these building materials is important before these put into construction purpose.
Purpose
WHO reported that indoor radon accumulation from soil and building materials is one of the major factors for human lung disorders. The main objective of the present study is to measure Naturally Occurring Radioactive Materials (NORM) in building materials of Pudukkottai and to assess the possible radiological risk.
Methods
A total of 118 samples of building materials have been investigated for 238U, 232Th, and 40K employing a 3″ × 3″ NaI(Tl) detector.
Results
The mean Raeq activity of the building materials maintained the following descending order: Stone (299 ± 206 Bq kg−1) > Soil (145 ± 54 Bq kg−1) Sand and Cement (117 ± 28 Bq kg−1) > Brick (110 ± 26 Bq kg−1). The present study identified seven stone quarries recorded Raeq higher than the permissible limit (>370 Bq kg−1) as set by UNSCEAR, 2008. All other building materials mined and used from this district recorded low Raeq activity. Important radiological parameters such as ADRA, I γ and H in were also calculated.
Conclusion
The results indicated that there is no elevated radioactivity observed in the studied materials. Therefore, it is concluded that the building materials used in the above mentioned district will not pose any hazard in terms of radioactivity.
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Acknowledgements
The authors would like to acknowledge Atomic Energy Regulatory Board, Govt. India for funding (Project No: AERB/CSRP/45/05/2010) and Shri. R. Mathiyarasu, HSEG, IGCAR for his technical support.
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Pillai, G.S., Jeevarenuka, K. & Hameed, P.S. Radioactivity in Building Materials of Pudukkottai Geological Region, Tamil Nadu, India. Earth Syst Environ 1, 4 (2017). https://doi.org/10.1007/s41748-017-0005-y
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DOI: https://doi.org/10.1007/s41748-017-0005-y