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Table 5 Gross-α and gross-β activity concentrations (Bql−1) and their corresponding committed annual effective dose in water samples from the Pits and surrounding communities

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 Type of water Activity concentration (Bql−1) Committed annual effective dose for (mSv year−1)
Gross alpha Gross beta Gross alpha Gross beta
P1 Surface water 0.0013 0.0367 0.0003 0.0185
P2 Surface water 0.0042 0.0430 0.0009 0.0217
P3 Surface water 0.0011 0.0389 0.0002 0.0196
P4 Surface water 0.0019 0.0357 0.0004 0.0180
P5 Surface water 0.0011 0.0391 0.0002 0.0197
T1-SW Surface water 0.0004 0.0319 0.0001 0.0161
T2-SW Treated water 0.0067 0.0311 0.0015 0.0157
T3-SW Surface water 0.0010 0.0390 0.0002 0.0196
T5-SW Surface water 0.0020 0.0104 0.0004 0.0052
S1 Surface water 0.0034 0.0310 0.0007 0.0156
T1-GW Ground water 0.0013 0.0314 0.0003 0.0158
T2-GW Ground water 0.0058 0.0392 0.0013 0.0197
T3-GW Ground water 0.0015 0.0243 0.0003 0.0122
T4-GW Ground water 0.0075 0.0354 0.0016 0.0178
R-GW1 Ground water 0.0065 0.0452 0.0014 0.0228
R-GW2 Ground water 0.0050 0.0289 0.0011 0.0146
Range   0.0004–0.0075 0.0104–0.0452 0.0001–0.0016 0.0052–0.0228
Average   0.0032 ± 0.0024 0.0338 ± 0.0083 0.0007 ± 0.0005 0.0170 ± 0.0042
Total average     0.0089 ± 0.0023
GSB recommended limit   0.1000 1.0000   
WHO recommended limit   0.5000 1.0000   
  1. σ—Standard deviation, GSB—Ghana Standards Board, WHO—World Health Organisation