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Complexation constants of CPX with metals found in the literature.
| Equilibria | Ca | Cu | Ni | Cd | Pb | References |
|---|---|---|---|---|---|---|
| M2++HA± = [M(AH)]2+ | 2.75 | 6.19 | 4.39 | Turel et al., 1996 | ||
| [M(AH)]2++HA± = [M(AH)2]2+ | 5.26 | 4.3 | ||||
| [M(AH)2]2+ = [M(AH)A]++H+ | −6.6 | −7.35 | ||||
| M2++HA± = [M(AH)]2+ | 2.75 | 6.14 | 3.14 | 3.86 | Tan et al., 2014 | |
| [M(AH)]2++HA± = [M(AH)2]2+ | 10.49 | 5.01 | 7.51 | |||
| [M(AH)2]2+ = [M(AH)A]++H+ | 3.32 | −1.12 | 0.38 |
