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International Journal of Radiation Research، جلد ۱۵، شماره ۲، صفحات ۲۱۹-۲۲۴
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عنوان انگلیسی Radiation hazard in soil from Ajaokuta North-central Nigeria
چکیده انگلیسی مقاله Background: Measurement of the radiation dose distribution is important in assessing the health risk a population and serve as reference in documenting changes to environmental radioactivity in soil due to man-made activities. Materials and Methods: The activity concentration of 238U, 232Th and 40K in soil samples obtained from different locations in Ajaokuta Local Government area was measured using Hyper Pure germanium Detection System (HPGe). Results: The calculated average concentration of the radionuclides ranged from 12 ± 1 Bqkg-1 to 59 ± 2 Bqkg-1 for 238U, 14 ± 1 Bqkg-1 to 78 ± 5 Bqkg-1 for 232Th and 49 ± 2 Bqkg-1 to 1272 ± 23 Bqkg-1 for 40K. In order to evaluate the radiological hazards due to natural radionuclides within Ajaokuta, the absorbed dose rate, gamma index, radium equivalent and excess lifetime cancer risk were estimated. According to measured data from the top soil (0-10 cm), the estimated radium equivalent (Raeq) ranges from 55.7 Bqkg-1 at Steel Complex to 253.3 Bqkg-1 obtained from Forest samples. Conclusion: The mean absorbed dose rate, annual effective dose and gamma radiation index evaluated were 66.2 nGyh-1, 81.2 µSvy-1 and 1.05 respectively which are higher than the recommended limit for normal background radiation. Thus, we conclude that people living in these locations may be exposed to higher radiation.
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نویسندگان مقاله محمدرضا usikalu | m r usikalu
department of physics, covenant university, p.m.b 1023, otta, ogun state, nigeria


عارفه بیگم rabiu | a b rabiu
centre for atmospheric research, nasrda, kogi state university, ayimgba, nigeria


کسری oyeyemi | k d oyeyemi
department of physics, covenant university, p.m.b 1023, otta, ogun state, nigeria


جبار achuka | j a achuka
department of physics, covenant university, p.m.b 1023, otta, ogun state, nigeria


m maaza | m. maaza
material science department, ithemba labs, somerset west, south africa
نشانی اینترنتی http://ijrr.com/browse.php?a_code=A-10-1-669&slc_lang=en&sid=en
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/42/article-42-568231.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Radiation Biology
نوع مقاله منتشر شده مرور و بررسی کلی
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