Journal article
Comparison of activity concentration of 238U, 232Th and 40K in different Layers of subsurface Structures in Dei-Dei and Kubwa, Abuja, northcentral Nigeria
O Maxwell, H Wagiran, N Ibrahim, SK Lee, S Sabri
Radiation Physics and Chemistry | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2013
Abstract
The study of activity concentration of 232Th, 238U and 40K of rock samples from site one (S1L1-S1L11, 70m) and site two (S2L1-S2L9, 60m) boreholes in Dei-Dei and Kubwa was presented and the first time in the region to be compared. Activity concentrations were analysed using a high resolution co-axial HPGe gamma ray spectrometer system. The activity concentration ranges in site one borehole were from 45±1 to 98±6Bqkg-1 for 232Th, from 18±2 to 37±4Bqkg-1 for 238U and from 254 ±32Bqkg-1 to 1195 ±151Bqkg-1 for 40K. The activity concentration ranges in site two borehole were from 32±3 to 84±7Bqkg-1 for 232Th, from 15±2 to 52±5Bqkg-1 for 238U and from 119±15 to 705±94 for 40KBqkg-1. Significantly ..
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Awarded by Ministry of Higher Education, Malaysia
Funding Acknowledgements
The authors would like to thank the ministry of Higher Education (MOHE) for their funding through Universiti Teknologi Malaysia Research Grant Scheme Project number: Q.J130000.2526.03H28. The authors will gratefully acknowledge the Nigerian Geological Survey Agency and Federal Ministry of Water Resources for their support in this work. Thanks to SYB Sinyoung Borehole Limited for providing the Rig machine and Compressor used in drilling the boreholes. Also, to Maxico Hydrosolution consult for providing Campus Ohmega for geosurvey. Finally, acknowledged the UTM laboratory staff, Saiful Rashid, Johari Zainudin, Mohd Jaafar Raji and Anisa Salikin.