Clustering of calcium phosphate in sbf and in the system CaCl_2-H_3PO_3-KCl-H_2O

摘要

Calcium phosphate clusters approximately 0.8 nm in diameter were detected in a solution containing only CaCl_2, H_3PO_4 and KCl at 25.0 deg C using an intensity-enhanced dynamic light scattering (DLS) technique. This suggests that tris(hydroxymethyl)aminomethane used as a buffer had no contribution to the formation of the clusters. The clusters were also detected in a simulated body fluid (SBF) with ion concentrations nearly equal to those of human blood plasma and in a solution (1.5SBF) with ion concentrations 1.5 times the SBF at 36.5 deg C.