Research Article
Bioactive Surface Modification of Hydroxyapatite
Table 1
XPS-determined binding energies (eV) of Ca 2p, P 2p, and (Ca 2p, P 2p); atomic concentrations (at. %); and Ca/P ratios for hydroxyapatite (HAP) and HAP treated with 10%, 20%, 30%, 40%, 50%, or 60% phosphoric acid (HAP—10% PA, HAP—20% PA, HAP—30% PA, HAP—40% PA, HAP—50% PA, and HAP—60% PA).
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The presence of the same superscript letter for the values indicates that there were no significant differences among the samples (P > 0.05). |