Metal | EDTA | EDDS | Hacac | CA | ||||
(loading mg∙kg−1) | mg∙kg−1 leached | % efficiency | mg∙kg−1 leached | % efficiency | mg∙kg−1 leached | % efficiency | mg∙kg−1 leached | % efficiency |
Cd (50) | 17.0 | 34.5 | 12.0 | 24.1 | 2.1 | 4.4 | 17.0 | 34.6 |
Cu (550) | 204.6 | 37.9 | 131.6 | 28.9 | 226.8 | 41.8 | 66.5 | 11.7 |
Ni (650) | 227.7 | 37.3 | 88.4 | 16.4 | 215.1 | 36.7 | 97.9 | 18.1 |
Pb (1590) | 702.1 | 45.4 | 207.0 | 13.1 | 30.1 | 1.9 | 150.2 | 10.3 |
Zn (2160) | 567.7 | 26.9 | 129.8 | 6.0 | 327.0 | 16.4 | 356.2 | 18.2 |