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Table 1 The basic properties of the different apatites

From: Remediation of copper contaminated soil by using different particle sizes of apatite: a field experiment

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