Table 4: Averages and medians of metal contents in five geochemical fractions (mg Kg-1).
Step 1 | Step II | Step III | Step IV | Step V | ||
---|---|---|---|---|---|---|
Cd | Mean | 0.36 | 0.22 | 0.74 | 0.34 | 0.75 |
St dev. | 0.17 | 0.08 | 0.27 | 0.12 | 0.29 | |
Median | 0.3 | 0.2 | 0.8 | 0.3 | 0.8 | |
Cu | Mean | 0.1 | 0.19 | 0.18 | 0.15 | 0.75 |
St dev. | 1.40E-17 | 0.08 | 0.07 | 0.05 | 0.46 | |
Median | 0.1 | 0.2 | 0.2 | 0.15 | 0.7 | |
Pb | Mean | 0.65 | 0.42 | 0.21 | 0.35 | 0.42 |
St dev. | 0.28 | 0.25 | 0.11 | 0.16 | 0.15 | |
Median | 0.6 | 0.35 | 0.2 | 0.3 | 0.35 | |
Zn | Mean | 0.66 | 0.47 | 0.41 | 0.35 | 0.22 |
St dev. | 0.31 | 0.23 | 0.17 | 0.14 | 0.08 | |
Median | 0.75 | 0.45 | 0.5 | 0.3 | 0.2 | |
Ni | Mean | 1.6 | 4.73 | 1.36 | 4.04 | 1.78 |
St dev. | 0.58 | 1.56 | 0.53 | 2.15 | 1.05 | |
Median | 1.5 | 4.9 | 1.3 | 3.75 | 1.7 | |
Mn | Mean | 0.67 | 0.94 | 0.81 | 0.48 | 1.69 |
St dev. | 0.37 | 0.44 | 0.23 | 0.23 | 0.44 | |
Median | 0.6 | 1 | 0.75 | 0.4 | 1.7 | |
Fe | Mean | 8.11 | 2.87 | 1.43 | 7.69 | 12.26 |
St dev. | 3.33 | 2.56 | 0.39 | 3.42 | 4.72 | |
Median | 9 | 2.15 | 1.45 | 9.1 | 11.15 |