ACTIVITY CONCENTRATION OF 137Cs AND NATURALLY OCCURRING  RADIONUCLIDES IN SOIL AND WATER SITE OF GOAINGHAT AND JAINTAPUR AREA OF SYLHET, BANGLADESH

M.  Shamsuzzaman; M. Nurul  Alam; M. M.  Rahman; Molla M. S.  Rahman

doi:10.53808/KUS.2008.9.1.0518-L

Authors

M. Shamsuzzaman Reactor Operation and Maintenance Unit (ROMU), Atomic Energy Research Establishment, G.P.O. Box-3787, Dhaka-1000, Bangladesh
M. Nurul Alam Radiation Monitoring and Radioactive Waste Management Unit, Savar , Bangladesh
M. M. Rahman Radiation Monitoring and Radioactive Waste Management Unit, Savar , Bangladesh
Molla M. S. Rahman Environmental Science Discipline, Khulna University, Khulna 9208, Bangladesh

DOI:

https://doi.org/10.53808/KUS.2008.9.1.0518-L

Keywords:

Activity concentration, radionuclide, environmental radiation hazard, Bangladesh

Abstract

The concentration of anthropogenic 137Cs and naturally occurring 226Ra, 232Th and 40K radionuclides were measured in the undisturbed soil at 0-5 cm depth and water collected from the natural reservoir in the Terrene of Goainghat and Jaintapur area of Sylhet district of Bangladesh near the Indian border area by gamma ray spectrometry, with the aim of evaluating the environmental radiation hazard. The activity concentration of 137Cs was observed in all the soil and water samples, ranging from 5.22 4 - 31.74 and 1.1 - 2.2 Bqkg-1respectively. The activity level of 137Cs in this area was lower than that of Cox’ s Bazar (27.38-45.51 Bq kg-1) and higher than that of Chittagong (2.66 Bq kg-1). Values of the natural radionuclides present in the samples were greatly influenced by the geomorphological conditions in the area. The average activity of 226Ra, 232Th and 40K in soil were 57.5, 167.6 and 1202.3 Bq kg-1 respectively. The average activities of 232Th and 40K in the soil samples of this area were higher than the world average value of 25.0 and 350.0 Bq kg-1 respectively. The average γ-ray dose rate due to naturally occurring radionuclides in soil samples was found 180 nGy h-1.

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References

Alam, M.N.; Chowdhury, M.I.; Islam, M.N. and Roy, P.K. 1995. Radioactyivity in soil of Chittagong hills. Nuclear science and applications. Dhaka, Bangladesh: Bangladesh Atomic Energy Commission (BAEC). 4(1):1-10.

Alam, M.N.; Chowdhury, M.I.; Kamal, M.; Ghose, M.; Islam, N. and Anwaruddin, M. 1999. Radiological assessment of drinking water of the Chittagong region of Bangladesh. Radiation protection Dosimetry, 82(3): 207-214.

Analytical Quality Control Services (AQCS). 1995. Intercomparison Runs Reference Materials. Analytical Quality Control Services, International Atomic Energy Agency (IAEA), Vienna, Austria.

Beretka, J. and Mathew, P.Y. 1985. Natural radioactivity of australiun building materials, industrial wastes and by- products. Health Physics, 48(1): 87-95.

Cox M.E. and Fankhauser B.L. 1984. Distribution of fallout Caesium-137 in Hawaii. Health Physics. 45:65p. International Atomic Energy Agency (IAEA). 1989. Measurement of radionuclides in food and environmental samples. IAEA Technical Report Series-295. IAEA, Vienna, Austria.

International Atomic Energy Agency (IAEA). 1991. Environmental contamination following a major nuclear accident. 1:1 pp 50-56. In Conference publication, International government publication, Vienna.

Ibrahiem, N.M.; Shawky, S.M. and Amer, H.A. 1995. Radioactivity levels in Lake Nasser sediments. Applied Radiation Isotopes, 46: 620-627.

International Commission on Radiological Protection (ICRP). 1983. Radionuclide Transformation. Pergamon Press, Oxford.

Main, F.K.; Molla, M.A.R.; Alam, M.N.; Rahman, M.M.; Roy, S.; and Bose, S.R. 1985. Survey of Background radiation level in Bangladesh. Annual Report, Atomic Energy Commission, Dhaka, Bangladesh.

Mollah, A.S.; Rahman, M.M.; and Hussain, S.R. 1986. Distribution of γ-emitting radionuclides in soils at the Atomic Energy Research Establishment, Savar, Dhaka, Bangladesh. Health Physics, 50(6): 835-838.

Nuclear Energy Agency (NEA)-Organization for Economic Co-operation and Development OECD. 1979. Nuclear Energy Agency, Exposure to radiation from natural radioactivity in building materials. Reported by NEA group of Experts, OECD, Pairs.

Schotzig, U. and Debertin, K. 1983. Photon emission probabilities per decay of 226Ra and 232Th in equilibrium with their daughter products. Applied Radiation and Isotopes, 34: 533-538.

United Nations Scientific Committee on the effects of Atomic Radiation (UNSCEAR). 1988. Exposure from natural source of radiation. Report to the General Assembly. U.N., New York, USA.