Table 2. Heavy metals concentrations measured in the lower Wonderfonteinspruit.
| Al (ug/L) |
As (ug/L) |
Cd (ug/L) |
Co (ug/L) |
Cr (ug/L) |
Cu (ug/L) |
Fe (ug/L) |
Hg (ug/L) |
Ni (ug/L) |
Mn (ug/L) |
Pb (ug/L) |
Se (ug/L) |
U (ug/L) |
Zn (ug/L) |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Site1 | 20.00 ± 20.00 | 9.30 ± 1.50 | 0.05 ± 0.07 | 14.40 ± 3.15 | 0.13 ± 0.10 | 10.70 ± 5.46 | 430.00 ± 100.00 | 0.40 ± 0.66 | 50.00 ± 13.70 | 30.00 ± 40.00 | 8.05 ± 0.33 | 0.57 ± 0.82 | 37.00 ± 3.05 | 1.39 ± 1.75 |
| Site2 | 180.00 ± 260.00 | 3.64 ± 1.39 | 0.05 ± 0.07 | 7.03 ± 1.12 | 0.60 ± 0.75 | 12.60 ± 5.87 | 480.00 ± 190.00 | 0.50 ± 0.48 | 9.55 ± 3.27 | 50.00 ± 80.00 | 8.18 ± 0.26 | 0.66 ± 0.94 | 19.90 ± 4.84 | 1.74 ± 2.36 |
| Site3 | 20.00 ± 30.00 | 2.05 ± 2.06 | 0.05 ± 0.06 | 5.74 ± 1.73 | 0.69 ± 0.90 | 9.66 ± 2.37 | 400.00 ± 60.00 | 0.12 ± 0.18 | 19.50 ± 17.80 | 10.00 ± 10.00 | 8.48 ± 1.09 | 0.64 ± 0.90 | 17.00 ± 12.20 | 1.28 ± 1.54 |
| Site4 | 0.32 ± 0.34 | 0.22 ± 0.31 | 0.05 ± 0.07 | 3.45 ± 0.43 | 0.77 ± 1.06 | 6.19 ± 1.81 | 370.00 ± 80.00 | 0.07 ± 0.10 | 2.28 ± 3.88 | 1.29 ± 2.22 | 8.14 ± 0.28 | 0.68 ± 0.96 | 3.20 ± 0.18 | 1.30 ± 1.53 |
| Site5 | 7.29 ± 7.37 | 0.20 ± 0.28 | 0.05 ± 0.06 | 3.32 ± 0.25 |
0.44 ± 0.48 | 8.34 ± 3.37 | 390.00 ± 60.00 | 0.06 ± 0.062 | 2.50 ± 2.22 | 8.76 ± 13.50 | 8.14 ± 0.52 | 0.66 ± 0.94 | 18.80 ± 1.55 | 1.80 ± 2.37 |
| Site6 | 2.55 ± 4.25 | 0.22 ± 0.31 | 0.06 ± 0.07 | 6.77 ± 1.91 | 1.29 ± 1.95 | 8.34 ± 6.43 | 360.00 ± 60.00 | 0.03 ± 0.03 | 0.06 ± 0.05 | 0.93 ± 1.58 | 8.19 ± 0.45 | 0.61 ± 0.84 | 4.58 ± 2.66 | 1.72 ± 2.22 |
| Site7 | 20.00 ± 30.00 | 0.22 ± 0.30 | 0.05 ± 0.06 | 5.58 ± 1.94 | 0.43 ± 0.47 | 5.92 ± 2.50 | 350.00 ± 70.00 | 0.01 ± 0.01 | 0.35 ± 0.55 | 6.66 ± 11.20 | 8.16 ± 0.20 | 0.68 ± 0.97 | 5.76 ± 2.15 | 1.34 ± 1.53 |
Values are given as the mean of three replicates ± standard deviation