Browsing by Author "Bello, A.A."

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    ASSESSMENT OF RADIATION EXPOSURE LEVELS IN SOME SELECTED BUILDINGS IN BAGAJI VILLAGE, KEFFI, NIGERIA
    (Department of Psychology, Nasarawa State University Keffi, 2019-01-10) Ibrahim, U.; Anzaku, L.A.; Ayanninoula, A.O.S.; Bello, A.A.; Abubakar, Musa Tafida
    It is observed by both United Nation Scientific Committee on the Effects of Atomic Radiation (UN SC EAR, 2000) and International Cormnission on Radiation Protection (ICRP, 1991) that there could be some exposure in some homes which would require regulatory control but is not really considered. This study is therefore, to assess the ambient outdoor radiation levels of some selected buildings (new and old) in Bagaji village Keffi, Nasarawa State. The inspector alert nuclear radiation meter was used for these assessments, where it was held at the abdominal level and readings were taken in different houses in mR/hr and in count per minute. The exposure levels at ten different houses (new and old) were measured and it was found that the annual dose rate ranges from (1.98±J.09 mSv/yr) to (I.27±J.04 mSv/yr).The exposure rate were converted to annual equivalent dose and annual effective dose rate in order to compare it with the public exposure limits by ICRP, it was found that the annual effect dose rate is between 0.58 mSv/yr - 0.66 mSv/yr for new houses and 0.76 mSv/yr - 0.98 mSv/yr for the old houses which is below the public exposure limits and may not necessarily result to any hazard
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    Fertility Cancer and Hereditary Risks in Soil Sample of Nasarawa, Nasarawa State, Nigeria
    (Department of Physics, Nasarawa State University Keffi, 2021-09-13) Rilwan, Usman; Hudu, A.; Ubaidullah, A.; Maisalatee, A.U.; Bello, A.A.; Okara, G.O.
    A survey of Fertility Cancer and Hereditary Risks in Soil Sample of Nasarawa was carried out. This study assessed the level of Fertility Cancer and Hereditary Risks from the naturally occurring radionuclides; 232Th, 226Ra and 40K. 12 soil samples collected from the respective part of the Nasarawa were analyzed using the gamma-ray spectrometry NaI (Tl) detector system. The mean concentration for 40K was 645.29 ± 07.32 Bq/ kg, for 226Ra was 28.43 ± 4.8422 Bq/Kg and for 232Th was 66.84 ± 2.0201 Bq/Kg. The average effective dose due to the ingestion was 0.36±0.1 μSv/ y which was approximately 1000 times lower than the world average effective dose. Radium equivalent activity Raeq (Bq/kg), alpha index and total cancer risk were found to be 161.44±8.08 Bq/kg, 0.142±0.02 and (0.21±0.05) ×10-5 respectively. UNSCEAR/ USEPA stipulated that; radium equivalent activity, alpha index, effective dose and total cancer risk should not exceed the limit of 370 Bq/kg, unity, 300 μSv/y and 1 ×10-4 respectively. Hence the values obtained in this work were within the acceptable limits. This implies that the ingestion or inhalation of soil is not associated with any radiological risk of concern.