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| Non-metals | Metals | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Asphaltene | C% | H% | S% | N% | O% | (NSO) % | H/C | V (μg g−1) | Ni (μg g−1) |
| XJ-1 | 74.29 | 6.00 | 3.15 | 1.08 | 3.27 | 7.50 | 0.9692 | 618 | 92 |
| XJ-2 | 77.67 | 6.72 | 3.38 | 1.17 | 2.75 | 7.31 | 1.0382 | 795 | 106 |
| XJ-3 | 74.87 | 6.34 | 3.38 | 1.26 | 3.13 | 7.77 | 1.0162 | 852 | 109 |
| Mean | 75.61 | 6.35 | 3.30 | 1.17 | 3.05 | 7.53 | 1.0078 | 755 | 307 |
