Table 1.
X-ray photoelectron spectroscopy spectra for titanium (Ti) and calcium phosphate (CaP), both untreated and atmospheric pressure plasma- (APP-) treated. Mean (SD) values are provided.
| Chemical element (%) | Ti surface | CaP surface | ||
|---|---|---|---|---|
| Untreated | APP-treated | Untreated | APP-treated | |
| Al2p | 1.5 (0.5) | ∗∗ | ∗∗ | ∗∗ |
| C1s | 45.0 (5.1) | 38.0 (4.7) | 38.0 (4.2) | 22.0 (4.5) |
| N1s | 0.1 (0.2) | — | — | — |
| Ca2p | — | — | 11.0 (2.5) | 12.0 (2.3) |
| O1s | 37.6 (3.6) | 43.0 (4.3) | 42.0 (5.2) | 48.0 (3.1) |
| P2p | — | — | 7.0 (1.3) | 10.0 (2.4) |
| Ti2p | 14.0 (4.7) | 19.0 (3.9) | ∗∗ | ∗∗ |
| V2p3 | ∗∗ | ∗∗ | ∗∗ | ∗∗ |
Al: aluminum; C: carbon; N: nitrogen; Ca: calcium; O: oxygen; P: phosphate; V: vanadium.
**Only trace amounts were present.