Abstract
Radiometric assessment of natural radioactivity concentration around Ijako dumpsite was done using hand held gamma spectrometer. A total of 10 in situ measurements were taken at the site. The U-238, Th-232, and K-40 radioactivity concentration obtained were used to assess the radiological hazard level in the area. Comparing the mean results of radiological parameter obtained with world average; Radium equivalent was far less than 370Bqkg-1, External hazard was less than 1, Annual effective dose equivalent was less than 0.08mSvy-1, Gamma index was less than 1, and Excess life cancer risk was less than 0.29 × 10-3. This implies that Ijako dumpsite poses no radiological hazard to the general public.
Highlights
Radiometric is the detection/measurement of radiation. It is the initial step taken for assessment of radiological safety in the environment [1]
In radiation science, radiometric is the detection/measurement of radiation
Measurement method and calculations Ten (10) in-situ measurements of natural radioactivity concentrations of U-238, Th-232, and K-40 and dose rate were taken around the residential areas that are closed to Ijako dumpsite in order to determine the radiological safety of the people living around the dumpsite
Summary
Radiometric is the detection/measurement of radiation. It is the initial step taken for assessment of radiological safety in the environment [1]. Elevated natural radioactivity concentration level in an environment is a risk factor that can adversely affect the general public. Since rocks and soils host the natural radionuclides that release radiation energy to the environment, it establishes the fact that geological composition of an area influences the background radiation [2,3].
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