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Table 3 Average activity concentrations of 238U, 232Th and 40K in soil, rock and ore pad samples in the study area

From: Natural radioactivity levels in soils, rocks and water at a mining concession of Perseus gold mine and surrounding towns in Central Region of Ghana

Sample location Activity concentration (Bqkg−1)
238U 232Th 40K
P1 97.0 ± 2.4 70.8 ± 2.4 1795.9 ± 17.8
P2 72.0 ± 2.3 84.2 ± 2.2 1445.4 ± 16.3
P3 86.8 ± 2.1 64.4 ± 2.1 1317.2 ± 17.5
P4 56.3 ± 2.0 61.8 ± 2.2 1722.4 ± 14.6
P5 62.2 ± 3.8 116.7 ± 3.0 1445.0 ± 20.4
P6 74.3 ± 2.3 89.6 ± 2.4 1544.1 ± 16.8
O7 62.1 ± 2.1 61.6 ± 2.2 1470.6 ± 17.2
O8 29.0 ± 1.6 35.0 ± 1.6 748.3 ± 12.0
S1 66.4 ± 1.9 81.6 ± 2.1 1241.2 ± 15.0
T1 69.2 ± 2.6 76.1 ± 2.1 844.8 ± 14.9
T2 70.0 ± 1.9 83.7 ± 2.0 720.8 ± 14.6
T3 57.0 ± 2.1 63.9 ± 1.9 500.0 ± 13.9
T4 61.3 ± 2.1 68.7 ± 2.0 749.5 ± 14.6
T5 48.4 ± 1.9 47.1 ± 2.1 811.3 ± 15.1
Range 29.0–97.0 35.0–116.7 500.0–1795.9
Average ± σ 65.1 ± 2.2 71.8 ± 2.2 1168.3 ± 15.8
World average 35 30 400
  1. σ—Standard deviation