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X-ray photoelectron spectroscopy (XPS) spectra for both NWRBM, immediately treated plasma (Plasma), and Plasma 30 days surfaces (mean ± SD).
| Chemical element (%) | NWRBM | Plasma | Plasma 30 days |
|---|---|---|---|
| Al2p | 1.04 (0.2) | 3.94 (1.2) | 2.8 (1.5) |
| C1s | 32.91 (2.1) | 15.25 (1.6) | 24.6 (3.3) |
| Ca2p | 9.84 (1.1) | 12.2 (2.1) | 10.4 (2.4) |
| o1s | 41.27 (3.2) | 50.3 (3.7) | 46.8 (5.2) |
| P2p | 8.28 (0.8) | 9.3 (1.6) | 8.4 (2.7) |
| Ti2p | 3.01 (0.4) | 5.2 (1.4) | 4.6 (2.3) |
| V2p3 | 0.16 (0.2) | 0.9 (0.5) | 0.7 (0.5) |
