Abstract
Measurements of the activity concentrations of 232Th, 238U and 40K in soil of small-scale paddy farms along the Enugu-Abakaliki highway were carried out using NaI(TI) detector. The results show activity concentrations in the range of 3.59 ± 0.22 to 12.32 ± 0.72 Bq kg−1 for 232Th, 2.06 ± 0.21 to 32.53 ± 3.59 Bq kg−1 for 238U and 26.46 ± 1.44 to 370.09 ± 20.05 Bq kg−1 for 40K with the order; 40K > 238U > 232Th. The results, though indicate an enhancement when compared with a control soil, the average levels are still below the world wide average reported by UNSCEAR, thus do not present any radiological threat to the general public at this current levels.
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