Table 1.
Total non-exchangeable organic hydrogen content of released aerosol extracted from samples collected during the TD of PU-CNT at at Td,final = 800 °C from routes I (without the thermal denuder) and II (with the thermal denuder).
| Route I | Route II | |
|---|---|---|
| Total H content (μmol/m3) | 223.8 | 84.4 |
| % (R-H) (0.5–1.8 ppm) | 42.7 | 62.7 |
| % (=C-C-H) (1.8–3.1 ppm) | 26.1 | 17.5 |
| % (O-C-H and O-H) (3.5–4.6 ppm) | 7.7 | 5.4 |
| % (H-C=C-H) (4.6–6.5 ppm) | 7.1 | 3.0 |
| % (Ar-H) (6.5–8.5 ppm) | 13.7 | 9.6 |
| % (H-C=N) (8.5–10.9 ppm) | 2.5 | 1.8 |
| % (COOH and Ar-OH) (10.9–12.4 ppm) | 0.3 | 0.1 |
| WSOC (μmol/m3) | 96.7 | 36.3 |
| H/C molar ratio | 2.31 | 2.38 |