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Molecular Fragment Ions Indicative of Hydroxyapatite Identified by Time-of-Flight Secondary Ion Mass Spectroscopy
| Fragment Ion | Mass (μm) |
|---|---|
| Ca+ | 39.9889 |
| PO+ | 47.0074 |
| CaOH+ | 57.0018 |
| CaPO2+ | 102.9572 |
| Ca2PO3+ | 158.9427 |
| Ca2PO4+ | 174.9539 |
| Ca3PO5+ | 230.8777 |
| Ca4PO6+ | 286.7986 |
| Ca5PO7+ | 342.887 |
| Ca6PO8+ | 398.8615 |
| Ca5P3O12 | 484.5304 |
| Ca6P3O13 | 540.6326 |
| Ca7P3O14 | 596.5688 |
| Ca8P3O15 | 652.4338 |
| Ca9P3O16 | 708.325 |
| Ca10P3O17 | 764.6632 |
Ca = calcium; H = hydrogen; O = oxygen; P = phosphorus.
