Total metal bound (meq·g−1) | Amount of cation released (meq·g−1) |
| ||||||
Zn2+ | Cd2+ | Ni2+ | Al3+ | Na+ | K+ | Ca2+ | Mg2+ | Rb/r |
a 0.0153 | 0.0589 | 0.0158 | 0.0050 | 0.0103 | 0.0675 | 0.0359 | 0.0277 | 0.671 |
b 0.0354 | 0.0972 | 0.0337 | 0.0050 | 0.0217 | 0.1838 |
| 0.1165 | 0.532 |