Measurement of 238U, 232Th and 40K in Boreholes at Gosa and Lugbe, Abuja, North Central Nigeria

Maxwell, Omeje and Wagiran, Husin and Ibrahim, Noorddin and Siak, Kuan Lee and Sabri, Soheil (2013) Measurement of 238U, 232Th and 40K in Boreholes at Gosa and Lugbe, Abuja, North Central Nigeria. Radiation Protection Dosimetry, 157 (2). pp. 271-277. ISSN 0144-8420

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Related URL: http://dx.doi.org/10.1093/rpd/nct140

Abstract

The purpose of this project is to evaluate the suitability of different sites as locations for obtaining underground water for consumption. The analysis of 238U, 232Th and 40K from rock samples from each layer of borehole at a depth of ∼50 m at Site A borehole, S3L1–S3L6 in Gosa and 40 m at Site B borehole, S4L1–S4L5 in Lugbe, Abuja, north central Nigeria is presented. The gamma-ray spectrometry was carried out using a high-purity germanium detector coupled to a computer-based high-resolution multichannel analyzer. The activity concentrations at Site A borehole for 238U have a mean value of 26±3, ranging from 23±2 to 30±3 Bq kg−1, 232Th a mean value of 63±5, ranging from 48±4 to 76±6 Bq kg−1 and 40K a mean value of 573±72, ranging from 437±56 to 821±60 Bq kg−1. The activity concentrations at Site B borehole for 238U have a mean value of 20±2, ranging from 16±2 to 23±2 Bq kg−1, 232Th a mean value of 46±4, ranging from 43±4 to 49±4 Bq kg−1, 40K a mean value of 915±116 and ranging from 817±103 Bq kg−1 to 1011±128 Bq kg−1. It is noted that the higher activity concentrations of 232Th and 238U are found in Site A at Gosa. Site B has lower radioactivity, and it is recommended that both sites are suitable for underground water consumption.

Item Type: Article
Uncontrolled Keywords: Background Radiation; Germanium; Humans; Nigeria; Potassium Radioisotopes; Radiation Monitoring; Soil Pollutants, Radioactive; Spectrometry, Gamma; Thorium; Uranium
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
H Social Sciences > H Social Sciences (General)
Divisions: Faculty of Built Environment > Urban and Regional Planning
Depositing User: Norazreen Ismail
Date Deposited: 16 Nov 2014 03:25
Last Modified: 16 Nov 2014 06:02
URI: http://epublication.fab.utm.my/id/eprint/523

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