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Table 1 Analytical data and solubility determination of cadmium hydroxylapatite [Cd5(PO4)3OH]

From: Characterization, dissolution and solubility of synthetic cadmium hydroxylapatite [Cd5(PO4)3OH] at 25–45°C

Temp (oC) Initial pH Dissolution time (days) Analytical data logK sp \(\Delta G_{f}^{o}\) (kJ/mol)
pH Cd (mmol/L) P (mmol/L)
25 2 210 4.17 6.7556 0.9995 −64.71 −3,970.96
240 4.18 6.7457 1.0008 −64.63 −3,970.53
300 4.19 6.7631 1.0225 −64.53 −3,969.92
35 2 210 3.97 7.1479 1.0797 −65.31  
240 3.93 7.0999 1.0732 −65.61  
300 3.90 7.0839 1.0906 −65.80  
45 2 210 3.82 6.4051 0.8956 −66.24  
240 3.72 6.4269 0.9253 −66.90  
300 3.75 6.5443 0.9957 −66.56  
25 5.6 210 6.55 0.0337 0.0054 −58.59 −4,174.00
240 6.58 0.0343 0.0083 −58.96 −4,176.11
300 6.60 0.0358 0.0097 −59.41 −4,178.69
25 9 210 6.52 0.0137 0.0108 −66.71 −3,982.36
240 6.50 0.0121 0.0080 −67.47 −3,986.74
300 6.52 0.0089 0.0081 −68.01 −3,989.80