Open AccessMonitoring of Background Radiation in Selected Schools in Ota, Ogun State Nigeria by Direct Measurement of Terrestrial Radiation Dose Rate
Author(s) -
C. A. Onumejor,
A. Akinpelu,
T. E. Arijaje,
M.R. Usikalu,
Olukunle Olaonipekun Oladapo,
M. E. Emetere,
Maxwell Omeje,
J. A. Achuka
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/331/1/012038
Subject(s) - ogun state , radionuclide , environmental science , radiation , radiation dose , dose rate , absorbed dose rate , mean value , radiation monitoring , background radiation , terrestrial ecosystem , radiation exposure , effective dose (radiation) , radiochemistry , nuclear medicine , absorbed dose , environmental chemistry , physics , medicine , chemistry , mathematics , geography , ecology , statistics , nuclear physics , biology , archaeology , ecosystem , local government
Terrestrial radiations are natural types from radionuclides found in rocks, building materials and soils in an environment. Monitoring of background radiation energy levels in selected school in Ota, Ogun State Nigeria by direct measurement of terrestrial radiation dose rate was done. The mean dose rate ranged from 35.4 to 62.34 nGyh −1 . The measured mean values are within world average recommended limits of 59 nGyh −1 except for study location SC7 with mean dose rate value of 62.34 nGyh −1 . On the over all, it can be concluded that the concentration of NORM (naturally occurring radioactive materials) and radiation dose rate in an environment is at safe level. Further environmental radiation assessment is recommended to ascertain the possible sources of background radiation dose rate and exposure, beside terrestrial radiation sources.