Abstract: In the present work, a total of ninety seven (97) randomly selected residential buildings across sixteen (16) linked villages of Rijau city were investigated. Solid track detectors; CR-37 were each exposed for a period of twelve (12) months after which they were etched and analyzed to determine their respective track densities. The detectors were etched in a 6.25 M solution of NaOH at 90 oC for 3 hours. The concentrations were used to compute exposures to dwellers and other radiological parameters per dwelling. Result of the survey yielded least, average and peak radon concentrations of 158.00±28.38 at Gyalle Area, 125.61±24.10 and 87.67±16.26 Bqm-3 at Low-cost Area respectively. This translated to least, average and peak Annual Effective Dose of 2.66, 3.13 and 3.99 mSvy-1 respectively. When compared with the standards set by International Centre for Ionizing Radiation (ICRP), both the measured Concentration and consequent Annual Effective Dose were within safe limit. The result from this work shall serve as a baseline radon data in the study area.
Keywords: Radon gas, CR-37, Annual Effective Dose, Rijau.
Title: Measurement of Indoor Radon (Rn-222) and Determination of Annual Effective Dose to Dwellers of Rijau, North-central, Nigeria
Author: Salihu Mohammed, Mohammed Ahmed
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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