Figure 1.
Potentiometric and conductance monitoring of HAP nucleation. The figures in the left column have been expended for detail and are presented in the right column. (a) pH changes in HAP nucleation experiment with relative supersaturation σHAP = 20.0. (b) No calcium was added for 1270 min after pH monitoring began to ensure electrode stability. (c) pH (black), calcium electrode potential (blue), and electrical conductance (red) changes during HAP nucleation with time 0 corresponding to the moment calcium addition was complete (σHAP = 19.5, I.S. = 0.006 M, and starting pH = 7.40 at 37.0 °C).