Sample number | Step (a) | Step (b) | Step (c) | % TG residue at 1000°C | ||
---|---|---|---|---|---|---|
Between about 190°C and 550°C | Between about 600°C and 850°C | |||||
(Collagen decomposition process) | Substep c(1) | Substep c(2) | ||||
Between about 600°C and 750°C | Between about 750°C and 850°C | |||||
(secondary carbonate decomposition) | (original carbonate decomposition) | |||||
% H2O loss | Main DTG peak T°C | Total % mass loss | % mass loss | % mass loss | ||
1 | 7.6 | 333 | 29.3 | 1.5 | 0.4 | 61.1 |
2 | 8.3 | 332 | 28.0 | 1.7 | 0.3 | 61.3 |
3 | 6.7 | 335 | 28.5 | 1.4 | 0.3 | 62.7 |
4 | 7.1 | 329 | 30.6 | 1.6 | 0.4 | 59.1 |
5 | 8.6 | 334 | 29.1 | 1.5 | 60.0 | |
6 | 8.2 | 330 | 27.0 | 1.1 | 62.5 | |
7 | 6.1 | 330 | 31.4 | 1.4 | 61.1 | |
8 | 8.2 | 331 | 26.9 | 1.5 | 0.4 | 62.4 |
9 | 8.3 | 334 | 28.2 | 1.4 | 61.6 | |
10 | 8.1 | 335 | 28.6 | 1.6 | 0.4 | 60.6 |
11 | 7.3 | 335 | 26.3 | 2.0 | 63.8 | |
12 | 7.1 | 335 | 24.1 | 2.6 | 1.0 | 64.7 |
13 | 6.9 | 333 | 27.7 | 2.1 | 62.5 | |
14 | 4.8 | 340 | 5.4 | 1.5 | 87.4 | |
15 | 6.6 | 330 | 4.3 | 3.1 | 0.8 | 83.8 |
16 | 7.6 | 330 | 8.0 | 3.5 | 1.2 | 79.2 |
17 | 5.6 | 325 | 7.8 | 3.5 | 1.0 | 81.4 |
18 | 6.8 | 340 | 5.1 | 3.0 | 0.8 | 83.7 |
19 | 6.0 | 345 | 3.1 | 3.3 | 0.8 | 86.0 |
20 | 5.9 | 350 | 4.0 | 2.8 | 86.1 | |
21 | 5.9 | 330 | 6.1 | 2.7 | 0.4 | 83.4 |
22 | 6.6 | 325 | 5.9 | 3.6 | 1.5 | 82.0 |
23 | 7.2 | 350 | 6.1 | 2.7 | 0.9 | 82.4 |