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) | 11.9 | 23.8 | 11.3 | 22.6 | 6.2 | 12.4 | 10.2 | 20.4 |
Cu (550) | 114.4 | 20.8 | 110.7 | 20.1 | 97.3 | 17.7 | 95.1 | 17.3 |
Ni (650) | 290.4 | 44.7 | 307.2 | 47.3 | 248.9 | 38.3 | 174.6 | 26.9 |
Pb (1590) | 211.5 | 13.3 | 173.1 | 10.9 | 51.2 | 3.2 | 807.7 | 50.8 |
Zn (2160) | 397.2 | 18.4 | 389.0 | 18.0 | 231.3 | 10.7 | 355.3 | 16.4 |