Metal | Season | Dry | % total concentration | Rainy | % total concentration | ||
Soil fraction | (mg·kg−1) | (mg·kg−1) | |||||
Cd | Soluble | 0.003 | (0.001) | 0.96 | 0.004 | (0.0004) | 1.08 |
| Exchangeable | 0.013 | (0.001) | 3.52 | 0.014 | (0.001) | 3,95 |
| Sol + Exch | 0.016 | (0.002) | 4.48 | 0.018 | (0.01) | 5.03 |
Cr | Soluble | 0.01* | (0.002) | 0,02 | 0.030* | (0.007) | 0.06 |
| Exchangeable | 0.03* | (0.003) | 0.05 | 0.04* | (0.003) | 0.09 |
| Sol + Exch | 0.04* | (0.005) | 0.08 | 0.07* | (0.006) | 0.15 |
Cu | Soluble | 0.012* | (0.002) | 0.04 | 0.114* | (0.007) | 0.36 |
| Exchangeable | 0.026* | (0.001) | 0.08 | 0.211* | (0.01) | 0.67 |
| Sol + Exch | 0.038* | (0.003) | 0.12 | 0.326* | (0.02) | 1.03 |
Pb | Soluble | 0.03 | (0.004) | 0.12 | 0.03 | (0.003) | 0.14 |
| Exchangeable | 0.09* | (0.01) | 0.40 | 0.10* | (0.01) | 0.45 |
| Sol + Exch | 0.11* | (0.01) | 0.52 | 0.13* | (0.01) | 0.58 |
Zn | Soluble | 0.58* | (0.08) | 0.59 | 1.28* | (0.20) | 1.34 |
| Exchangeable | 1.40* | (0.13) | 1.43 | 2.16* | (0.27) | 2.28 |
| Sol + Exch | 1.98* | (0.19) | 2.02 | 3.44* | (0.45) | 3.63 |
Fe | Soluble | 4.75* | (1.78) | 0.04 | 14.26* | (1.25) | 0.13 |
| Exchangeable | 8.96* | (1.07) | 0.08 | 37.21* | (3.79) | 0.33 |
| Sol + Exch | 13.71* | (2.81) | 0.12 | 51.47* | (4.21) | 0.46 |
Mn | Soluble | 1.28* | (0.16) | 0.33 | 2.17* | (0.35) | 0.49 |
| Exchangeable | 15.64* | (1.54) | 4.08 | 43.27* | (3.11) | 9.77 |
| Sol + Exch | 16.92* | (1.62) | 4.41 | 45.44* | (3.43) | 10.26 |