Material | Particle | Purity (%) | Shape | BET (m2 g−1) | pH | Zeta potential (mV) | Pb (mg kg−1) | Cu (mg kg−1) | Zn (mg kg−1) | Cd (mg kg−1) | Ca/P |
---|---|---|---|---|---|---|---|---|---|---|---|
NAP | 60 nm | >96 | Acicular | 68.8 | 7.07 | −5.55 | 10.8 | 3.77 | 9.81 | 0.474 | 1.70 |
MAP | 12 μm | >96 | Sphere | 42.8 | 7.23 | −44.4 | 8.94 | 21.6 | 20.5 | 0.454 | 1.61 |
OAP | 0.15 mm | >96 | Bulk | 1.25 | 9.70 | −17.0 | 18.2 | 11.2 | 18.6 | 0.469 | 2.12 |