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XPS quantitative chemical composition of HA-FCC reference sample.
| Peak | BE, eV (±0.1 eV) |
Atomic % | Bonds |
|---|---|---|---|
| C1s-A | 285.0 | 15.5 | Adventitious carbon |
| C1s-B | 287.0 | 2.2 | C=O |
| C1s-C | 289.9 | 2.4 | −C=O |
| Ca2p3/2 | 347.7 | 19.3 | Ca2+ |
| O1s-A | 531.6 | 41.5 | Phosphate, C−O, OH− |
| O1s-B | 533.9 | 5.9 | C=O, H2O |
| P2p3/2 | 133.3 | 13.3 | Phosphate |
