synthesis of hydroxyapatite containing some trace amounts elements in simulated body fluids

Spherical-like hydroxyapatite (ha, ca10(po4)6(oh)2) particles were prepared by the co-precipitation method in a simulated physiological environment. the effect of calcining temperature, calcining time and the ca/p ratio of the initial feeding on the morphology and crystallinity of ha were investigated in detail. interestingly, while the ca/p ratio of the initial feeding is 1.80, the obtained ha powders calcined at 800 °c for 2 h contain trace amounts of na and mg ions, and the (ca+na+mg)/p ratio is equal to 1.66, which is close to the stoichiometric ratio 1.67 of ha. and a better route with shorter reaction time for the synthesis of ha containing trace amounts of na and mg elements was acquired.