METHODS FOR SAMPLING AND
INORGANIC ANALYSIS OF COAL
U.S. Geological Survey
Bulletin 1823
Edited by D.W. Golightly and F.O. Simon
Table 13. XRF calibration of iron in coal ash: simple linear regression analysis results
| Concentration (percent) | ||
| Standard | Accepted | Calculated |
| AGV-1 | 6.78 | 6.83 |
| DNC-1 | 9.85 | 9.72 |
| W-1 | 11.11 | 10.90 |
| QLO-1 | 4.29 | 4.15 |
| G-1 | 1.94 | 1.49 |
| ANV | 7.48 | 7.56 |
| SCO-1 | 5.22 | 5.47 |
| SDC-1 | 6.85 | 7.27 |
| ANQ | 2.26 | 2.10 |
| ANY | 13.85 | 14.19 |
| BCR-1 | 13.41 | 13.73 |
| BHVO-1 | 12.23 | 12.07 |
| GSP-1 | 4.30 | 4.05 |
| STM-1 | 5.20 | 5.47 |
| W-2 | 10.77 | 10.97 |
| CRPG-Fe | 25.76 | 24.92 |
| G-2 | 2.69 | 2.36 |
| RGM-1 | 1.89 | 1.55 |
| ANW | 5.33 | 5.51 |
| ANX | 4.25 | 4.37 |
| BIR-1 | 11.25 | 11.45 |
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