Distribution and Comparison of Natural and Anthropogenic Radionuclides in Sediment Below and at Surface level in Charfassion Island, Bhola, Bangladesh

Authors

  • Quazi Muhammad Rashed-Nizam Lecturer, Department of Physics, university of Chittagong, Chittagong-4331, Bangladesh
  • A .M. Ginnah Lecturer Department of Physics University of Chittagong Chittagong-4331, Bangladesh
  • M M Rahman Lecturer Department of Physics University of Chittagong Chittagong-4331, Bangladesh
  • M Kamal Chief Scientific Officer Radioactivity Testing and Monitoring Laboratory Bangladesh Atomic Energy Commission CMCH Campus, Chittagong
  • M I Chowdhury Chief Scientific Officer Radioactivity Testing and Monitoring Laboratory Bangladesh Atomic Energy Commission CMCH Campus, Chittagong

Keywords:

Charfassion island, natural radioactivity, gamma spectrometry, BEGe detector, absorbed dose rate, effective annual dose rate.

Abstract

In order to assess the activity concentration of natural and anthropogenic radionuclides in the Charfassion Island, Bhola, Bangladesh, the lower level sediment samples were analyzed by using Broad Energy Germanium (BEGe) detector. Average activity concentrations of 238U, ²³²Th and 40K were found 19.34±4.37 BqKg-1, 31.14±5.58 BqKg-1 and 767.96±27.71 BqKg-1. These results were used to calculate the radiation hazard parameters like radium equivalent activities (Raeq), representative level index (Iγr) and compare mobility of natural radionuclides through the sediment. It has been found that 238U and 40K has a little bit higher mobility than the ²³²Th. Due to natural radionuclides in sediment, the effective annual outdoor dose in the study area is 0.07 mSv; which is within the accepted range 0.07 mSv and representative level index (Igr) is also found to be 0.95 BqKg-1. The findings from this research work would be useful to evaluate the population exposure from radionuclides in this island.

Author Biography

Quazi Muhammad Rashed-Nizam, Lecturer, Department of Physics, university of Chittagong, Chittagong-4331, Bangladesh

Lecturer, Dept. of Physics

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Published

2013-04-11

How to Cite

Rashed-Nizam, Q. M., Ginnah, A. .M., Rahman, M. M., Kamal, M., & Chowdhury, M. I. (2013). Distribution and Comparison of Natural and Anthropogenic Radionuclides in Sediment Below and at Surface level in Charfassion Island, Bhola, Bangladesh. Asian Journal of Applied Sciences, 1(1). Retrieved from https://www.ajouronline.com/index.php/AJAS/article/view/62

Issue

Vol. 1 No. 1 (2013): April 2013

Section

Articles

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