Open AccessAssessment of Environmental Radioactivity Level and its Health Implication in Imiringi Community Bayelsa State, Nigeria
Author(s) -
U.L. Anekwe,
R.A. Onoja
Publication year - 2020
Publication title -
journal of applied science and environmental management
Language(s) - English
Resource type - Journals
eISSN - 2659-1499
pISSN - 2659-1502
DOI - 10.4314/jasem.v24i6.16
Subject(s) - equivalent dose , effective dose (radiation) , toxicology , dose rate , radiological weapon , nuclear medicine , medicine , zoology , biology , dosimetry , surgery , medical physics
A total forty two (42) sampled points were investigated for radioactivity level and health implication using standard method. The exposure dose rate ranged from 14 to 32μRh-1 with an average value of μ23Rh-1. Dose rate and equivalent dose rate ranged from 121.8 to 278.4nGyh-1 and 1.18 to 2.69mSvy-1 respectively. The average value of the indoor annual effective dose equivalent (AEDE), outdoor AEDE, and excess lifetime cancer risk (ELCR) were computed to be 0.936 mSvy-1, 0.311 mSvy-1 and 0.810 x 10-3 respectively. Analysis of dose to human organs; testes and ovaries, were 0.61 and 0.43 mSvy-1 respectively. Exposure rate, dose rate and ELCR exceeded the recommended values. All the outdoor AEDEs were within the permissible value of 1.0 mSvy-1 for general public and below the limit of 20 mSvy-1 for radiological workers as recommended by InternationalCommission on Radiation Protection (ICRP).
Keywords: Assessment, Environmental radioactivity, Exposure dose, Health impact