Measurement of Indoor Radon Concentration in Some Selected Offices of Adigrat University, Tigray Region, Ethiopia
Nigus Alene Assefa,
Munaj Kumar Bhardwaj
Issue:
Volume 5, Issue 2, June 2019
Pages:
11-14
Received:
3 September 2019
Accepted:
29 September 2019
Published:
10 October 2019
Abstract: Radon is an inert radioactive gas. A long term exposure to high concentration of radon causes lung cancer. Taking this into account, an investigation in some offices of Adigrat Universityhas been made to estimate the radon concentrations and to determine the health risk of the workers in the community. In the present study, Solid State Nuclear Track Detectors (LR-115 type II) has been used to measure the emission of radon from 12 offices for a period of 3 months. After an exposure time of 3 months, films were removed from each office andtaken for etching. After the etching, films were washed with distilled water and allowed to dry for 1day. Finally, alpha tracks were counted using an optical microscope at magnification power of 400X. Results obtained in the present study show that the value of concentration of radon ranges from 171.31 Bq.m−3 to 394.05 Bq.m−3 with mean concentration273.79 Bq.m−3 and standard deviation of 79.7Bq.m−3 and the inhalation dose rate varies from a minimum of 1.54 mSv.y−1 to a maximum of 3.55 mSv.y−1 with an average of 2.46 mSv.y−1 and standard deviation of 0.72 mSv.y−1. Even though, radon concentration levels were found to be higher the inhalation dose rate is safe within recommended limits
Abstract: Radon is an inert radioactive gas. A long term exposure to high concentration of radon causes lung cancer. Taking this into account, an investigation in some offices of Adigrat Universityhas been made to estimate the radon concentrations and to determine the health risk of the workers in the community. In the present study, Solid State Nuclear Trac...
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Evaluation of the Natural Radioactivity Levels and Radiological Assessment of Nuts Commonly Consumed in Ile-Ife, South West, Nigeria
Samuel Oluwagbenga Inuyomi,
Odunayo Timothy Ore,
Olaitan Pelumi Abiodun
Issue:
Volume 5, Issue 2, June 2019
Pages:
15-19
Received:
2 October 2019
Accepted:
15 October 2019
Published:
23 October 2019
Abstract: In this study, the naturally occurring radionuclides and their associated radiological hazards were assessed in commonly consumed nuts in Ile-Ife, South west, Nigeria. Samples of different species of nuts were obtained in Ile-Ife, Osun State, Nigeria and their activity levels were determined using gamma ray spectrometer. The results showed that the mean activity of the identified radionuclides, 40K, 232Th and 238U are 67.36, 37.32 and 3.88 Bq/kg respectively. The radiological indices, ADR (absorbed dose rate), AEDR (annual equivalent dose rate), Hin (internal hazard index), Hex (external hazard index), AGDE (annual gonadal dose equivalent), Iγr (representative gamma index) and Raeq (radium equivalent) have values of 22.39 nGy/hr, 0.19 mSv/yr, 0.23 Bq/kg, 0.12 Bq/kg, 152.66 µsvy-1, 0.33 and 48.04 respectively. The radiological assessment suggests that there are no radiological hazards associated with the consumption of the nuts.
Abstract: In this study, the naturally occurring radionuclides and their associated radiological hazards were assessed in commonly consumed nuts in Ile-Ife, South west, Nigeria. Samples of different species of nuts were obtained in Ile-Ife, Osun State, Nigeria and their activity levels were determined using gamma ray spectrometer. The results showed that the...
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