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Radioactivity and radiation hazard assessment of Cauvery River, Tamilnadu, India
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S. Murugesan   , S. Mullainathan , V. Ramasamy , V. Meenakshisundaram |
| , s_binu@rediffmail.com |
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Abstract: (15565 Views) |
| Background: Natural radiation is constantly
present in the environment and is emitted from a
variety of natural and artificial sources. It affects
human body and environment. Materials and
Methods: The activity concentrations of 238U, 232Th
and 40K have been determined by Gamma ray
spectrometer with an HPGe detector in sediments of
Cauvery River, Tamilnadu, India. Results: The
absorbed dose rate, radium equivalent concentration,
external (Hex) and internal (Hin) hazardous indices are
calculated from criteria formula and compared with
the international recommended limits. The radioactive
heat production rate and activity concentration
index are also calculated. The observed dose rate
measurements from ERDM (Environmental Radiation
Dosi Meter) at 1m above the ground level at each site
of the both rivers are measured and correlated with
calculated absorbed dose rate. Conclusion: From the
various parameters and correlation between them,
the Cauvery River does not pose a radiological hazard
except the site no. 21, 22, 23, 30, 31 and 35. Iran. J.
Radiat. Res., 2011 8(4): 211-222 |
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| Keywords: Sediments, radioactivity, absorbed dose rate, hazardous indices, RHP, activity concentration index. |
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Full-Text [PDF 502 kb]
(3826 Downloads)
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Type of Study: Original Research |
Subject:
Radiation Biology
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