Radioactivity Concentration within the Environment of Lautech Teaching Hospital Osogbo, Nigeria
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 9
Abstract
This paper present the activity concentrations and environmental outdoor gamma dose rate within Lautech Teaching Hospital Osogbo, Nigeria. The outdoor gamma dose rates were determined in 170 sampling points and soil samples were taken from 85 locations. Gamma dose rates were determined by Alarm Dosimeter (LK3600) Geiger counter portable device for the measurements taken in air for two minutes at each sampling sport, 1m from the ground. Average outdoor gamma dose rate range from 40.98+0.36 to16.79+2.53 nGyh-1. Soil samples collected from locations were analyzed by gamma spectroscopy. The average activities concentration of the detected radionuclides 226Ra 232Th and 40K range 35.57+4.64 to 4.53+ 1.80, 22.68+ 4.13 to 4.54+ 1.35 and 827.73+70.46 to 324.64+26.76 respectively. Outdoor gamma dose rate, radium equivalent and the external hazard index due to activity concentration were determined and found within acceptable limit. Though,60Co and 152 Eu ,an artificial radionuclides due to activation and fallout were detected with very low activities.
Authors and Affiliations
G. A. Isola, D. A. Ajadi
Keywords
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