METHODS FOR SAMPLING AND
INORGANIC ANALYSIS OF COAL
U.S. Geological Survey
Bulletin 1823
Edited by D.W. Golightly and F.O. Simon
Table 15. XRF calibration of P2O5 in whole coal: simple linear regression analysis results
| Concentration (m g/g) | ||
| Standard | Accepted | Calculated |
| Syn-C | 2,610 | 2,590 |
| Syn-D | 1,310 | 1,310 |
| Syn-E | 653 | 622 |
| Syn-F | 327 | 321 |
| Syn-G | 163 | 153 |
| Syn-H | 82 | 77 |
| RM-120 | 300 | 304 |
| RM-121 | 350 | 354 |
| RM-122 | 600 | 650 |
| RM-123 | 270 | 200 |
| RM-124 | 160 | 150 |
| NBS-1632 | 300 | 280 |
| NBS-1632a | 500 | 512 |
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