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Repeatability of elemental analysis for carbon (C) and hydrogen (H) in coal.
| Times | Sample type | Injection weight (mg) | Element content (%) | |
|---|---|---|---|---|
| C | H | |||
| 1 | BBOT | 1.686 | 72.53 | 6.09 |
| Unknown1 | 1.832 | 72.90 | 6.04 | |
| Absolute difference (%) | 0.37 | 0.15 | ||
|
| ||||
| 2 | BBOT | 1.686 | 72.53 | 6.09 |
| Unknown1 | 1.832 | 72.63 | 5.84 | |
| Absolute difference (%) | 0.10 | 0.25 | ||
1Unknown is that using the same BBOT sample but not inputting the information of the sulfanilamide element content.
