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Information Journal Paper

Title

Indoor and outdoor gamma radiation exposure levels in selected residential buildings across Ondo state, Nigeria

Pages

  363-370

Abstract

 Background: Indoor and outdoor gamma radia on exposure levels were measured in a total of 360 randomly selected dwellings categorized as local, semimodern and modern buildings across Ondo State, Nigeria to determine the annual effec ve doses. Materials and Methods: All radia on measurements were taken using a calibrated Kindenoo PG-15 Geiger Muller detector and a GPS for geographical coordinates of sample points. Equal number (360) sample point measurements were carried out for indoor and outdoor measurements. Measurements at each loca on point were performed holding the survey meter at 1 m above ground surface or floor to avoid unwanted effects of radia on from soil or building floor. The detector was also held at least six to seven meters away from buildings nearby in order to avoid unwanted effects of the building materials on outdoor measurements. Each measurement was repeated six mes and the average was taken to represent the value for a sample point. Results: The average outdoor and indoor dose rates were determined as 263 ± 32 μ Svh-1 and 213 ± 64 μ Svh-1 respec vely. The highest contribu on to the total indoor dose was from the local buildings followed by semi modern buildings and the modern buildings contributed the least dose. The average annual effec ve dose was calculated as 1. 56 ± 0. 33 mSv, which is higher than the world average value (0. 48 mSv). Conclusion: In view of the poten al radia on resul ng from building materials, comprehensive assessment of natural radia ons in such materials is required.

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    Cite

    APA: Copy

    Oladele, b.b., Arogunjo, a.m., & Aladeniyi, k.. (2018). Indoor and outdoor gamma radiation exposure levels in selected residential buildings across Ondo state, Nigeria. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 16(3), 363-370. SID. https://sid.ir/paper/286754/en

    Vancouver: Copy

    Oladele b.b., Arogunjo a.m., Aladeniyi k.. Indoor and outdoor gamma radiation exposure levels in selected residential buildings across Ondo state, Nigeria. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2018;16(3):363-370. Available from: https://sid.ir/paper/286754/en

    IEEE: Copy

    b.b. Oladele, a.m. Arogunjo, and k. Aladeniyi, “Indoor and outdoor gamma radiation exposure levels in selected residential buildings across Ondo state, Nigeria,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 16, no. 3, pp. 363–370, 2018, [Online]. Available: https://sid.ir/paper/286754/en

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