Metals | Extraction efficiency (%) Single-metal leach | Extraction efficiency (%) Multi-metal leach | ||||||||
EDTA | EDDS | Hacac | CA | TA | EDTA | EDDS | Hacac | CA | TA | |
Cd | 42 | 28 | 2 | 11 | 9 | 60 | 8 | 8 | 16 | 17 |
Cu | 33 | 10 | 46 | 19 | 10 | 32 | 6 | 28 | 23 | 6 |
Ni | 33 | 14 | 51 | 30 | 16 | 49 | 5 | 51 | 50 | 29 |
Pb | 49 | 9 | 3 | 15 | 7 | 53 | 2 | 7 | 16 | 10 |
Zn | 29 | 6 | 31 | 17 | 14 | 31 | 4 | 17 | 19 | 17 |