Measurement of Outdoor Ambient Radioactive Radiation and Evaluation of Radiation Indices and Excess Lifetime Cancer Risk within Uyo, Unity Park, Uyo, Nigeria
Sunday E. Etuk *
Department of Physics, University of Uyo, Uyo, Akwa Ibom State, Nigeria
Aniesua A. Essiett
Department of Physics, University of Uyo, Uyo, Akwa Ibom State, Nigeria
Okechukwu E. Agbasi
Department of Physics, University of Uyo, Uyo, Akwa Ibom State, Nigeria
*Author to whom correspondence should be addressed.
Abstract
In this paper, the first result of outdoor ambient radioactivity measurement and evaluated radiation indices and excessive lifetime cancer risk factor within Uyo, Unity Part Uyo, Nigeria (Latitude 5.0281°, Longitude 7.9734° and Latitude 5.0466° and Longitude 7.9869°) are presented. Overall mean equivalent dose rate of 0.116µSv/yr and mean ELCR of 0.449 x 10‑3 were recorded for the park. The mean annual equivalent dose is less than the ICRP annual recommended limit. The values here are less than those reported for most other locations by other researchers.
Keywords: Uyo Unity Park, radioactive radiation, equivalent dose, effective dose, excessive lifetime cancer risk factor