Official Journal of the Japan Wood Research Society
Table 3 Relative surface composition for new and aged samples of spruce and fir
Wood samples | C1 [atm.%] | C2 [atm.%] | C3 [atm.%] | C4 [atm.%] | Atomic ratio O/C | Cox/Cunox |
|---|---|---|---|---|---|---|
New spruce | 65.9 (± 6.5) | 28.3 (± 4.4) | 2.1 (± 1.2) | 3.6 (± 0.9) | 0.18 | 0.51 |
Aged spruce (a) | 43.2 (± 4.7) | 45.0 (± 2.3) | 9.8 (± 2.8) | 2.1 (± 0.4) | 0.42 | 1.31 |
Aged spruce (b) | 51.1 (± 1.3) | 37.4 (± 0.4) | 8.8 (± 0.3) | 2.7 (± 0.6) | 0.36 | 0.95 |
New fir | 48.5 (± 2.9) | 39.5 (± 2.3) | 9.5 (± 1.0) | 2.5 (± 0.4) | 0.36 | 1.06 |
Aged fir | 42.2 (± 1.9) | 48.0 (± 2.2) | 6.2 (± 0.4) | 3.6 (± 0.8) | 0.42 | 1.36 |